Kingston, ON K7L 3N6
Tel: (613) 533-6717
Fax: (613) 533-2128
- Environmental fluid dynamics
- Sediment resuspension
- Coastal oceanography
- Hydrodynamic and water quality modelling
- Physical limnology and physical-biogeochemical coupling
- Internal waves, turbulence and mixing in stratified flows
- Impacts of climate change on water quality and fish habitat
Graduate Student Positions:
I am always looking for motivated students for funded MASc and PhD research positions, as well as Undergraduate Summer Research Assistants and Undergraduate Thesis students. If you find the research on this website interesting (see my Students, Research, Publications and Laboratory tabs) and would like to apply, please drop by my office, or send me an email with a copy of your CV.
Information on applying to Grad School at Queen's can be found here; information on the Civil Engineering Graduate Program can be found here; student testimonials can be found here; and the application form can be found here.
Examples of recent graduate student projects:
- PhD on internal wave induced resuspension
- Masters on surface layer dynamics
- PhD on coastal boundary layer dynamics
Examples of recent field deployments:
Doctor of Philosophy (Ph.D.) - Environmental Fluid Dynamics (2004)
Centre for Water Research, Department of Environmental Engineering
University of Western Australia
Master of Applied Science (M.A.Sc.) - Environmental Fluid Dynamics (1999)
Department of Mechanical and Industrial Engineering
University of Toronto
Bachelor of Engineering (B.Eng.) (1997)
Department of Civil Engineering and Applied Mechanics
Environmental Engineering Minor
- Associate Editor: Journal of Great Lakes Research
- Section Editor: Inland Waters
- Scientific Advisory: Committee, Great Lakes Fishery Commission
- Adjunct Professor: Department of Integrative Biology, University of Guelph; Department of Civil Engineering, University of Alberta, Department of Biology, University of Waterloo
- Member, Professional Engineers of Ontario
Engineering Consultant - Consulting projects for Environment and Climate Change Canada, Ontario Ministry of the Environment and Climate Change, Ontario Ministry of Natural Resources and Fisheries, Conservation Authorities and Municipalities.
Post-Doctoral Researcher - Computational Fluid Dynamics and Ocean Process Modeling (2005)
Scripps Institution of Oceanography, University of California San Diego
Post-Doctoral Researcher - Geophysical Fluid Dynamics Laboratory (2004)
School of Environmental Systems Engineering, University of Western Australia
Research Associate - Environmental Fluid Dynamics Laboratory (1999-2000)
Department of Mechanical and Industrial Engineering, University of Toronto
Research Assistant - Environmental Hydraulics (1997)
Department of Civil Engineering and Applied Mechanics, McGill University
Journal Papers (students and post-docs in bold)
47. Valipour, R., Boegman, L. Bouffard, D., and Rao, Y.R. 2017. Sediment resuspension mechanisms and their contributions to high-turbidity events in a large lake. Limnol. Oceanogr. doi(http://dx.doi.org/10.1002/lno.10485)
46. Dorostkar, A., Boegman L., and Pollard A. 2017. Three-dimensional simulation of nonlinear internal wave dynamics in Cayuga Lake. J. Geophys. Res. doi(http://dx.doi.org/10.1002/2016JC011862)
45. Zhang, H., Boegman, L., Scavia, D. and Culver, D. 2016. Spatial distributions of external and internal phosphorus loads and their impacts on Lake Erie phytoplankton and water quality. J. Great Lakes Res. 42:6, 1212-1227
44. Jabbari, A., Rouhi, A. and Boegman, L. 2016. Evaluation of the structure function method to compute turbulent dissipation within boundary layers using numerical simulations. J. Geophys. Res. 121, 5888–5897, doi:10.1002/2015JC011608.
43. DeVanna Fussell, K., Smith, R., Fraker, M., Boegman, L., Frank, K., Miller, T., Tyson, J., Arend, K., Boisclair, D., Guildford, S., Hecky, R., Hӧӧk, T., Jensen, O., Llopiz, J., May, C., Najjar, R., Rudstam, L., Taggart, C., Rao, Y., and Ludsin, S. 2016. Managing Great Lakes fisheries under changing ecosystem conditions: a perspective on needed approaches and research. J. Great Lakes Res. 42:4 743-752.
42. Aghsaee. P. and Boegman, L. 2015. Experimental investigation of sediment re-suspension beneath internal solitary waves of depression. J. Geophys. Res. http://dx.doi.org/10.1002/2014JC010401.
41. Boegman, L. and Yerubandi R Rao. Two-dimensional hydrodynamic-biogeochemical modelling of Lake Winnipeg for eutrophication management. J. Great Lakes Res. (Submitted).
40. Valipour, R., Bouffard, D., and Boegman, L. 2015. Parameterization of bottom mixed layer and logarithmic layer heights in central Lake Erie. J. Great Lakes Res. 41: 707-718.
39. Morikawa, D.S., and Boegman, L. Impact of lakeshore development on lake trout habitat in a Canadian Shield lake. Fund. Appl. Limnol. (Submitted).
38. Dorostkar, A., Boegman L., Diamessis P.J. and Pollard A. Three-dimensional numerical simulation of internal wave dynamics in a long narrow lake. J. Geophys. Res. (Submitted).
37. Rao, Y.R., Boegman, L., Zhang, W., Oveisy, A., Bolkhari, H., and Zhao, J. Surface meteorology, hydrology and physical limnology features of the Bay of Quinte. Aquat. Ecosys. Health Manage. (In press).
36. Valipour, R., Bouffard, D., Boegman, L. and Rao, Y.R. 2015. Near-inertial waves in Lake Erie. Limnol. Oceanogr. 60(5): 1522-1535.
35. Rao, Y.R., Boegman, L., Bolkhari, H. Hiriat-Baer, V. 2015. Physical processes affecting water quality in Hamilton Harbour. Aquat. Ecosys. Health Manage. (Accepted).
34. Jabbari, A., Boegman, L. and Piomelli, U. 2015. Evaluation of the inertial dissipation method using numerical simulations. Geophys. Res. Lett. 42: 1504–1511, http://dx.doi.org/10.1002/2015GL063147
33. Oveisy, A., Boegman, L. and Yerubandi R. Rao. 2015. A model of the three-dimensional hydrodynamics, transport and flushing in the Bay of Quinte. J. Great Lakes Res. 41: 536-548.
32. Paturi, S., Boegman, L., Watt, S. and Yerubandi R. Rao. 2015. Modelling transport of municipal wastewater, industrial and tributary discharges in eastern Lake Ontario and upper St. Lawrence River during the ice-free period of 2006. J. Great Lakes Res. 41: 549-559.
31. Paturi, S., Boegman, L., Bouffard, D. and Yerubandi R. Rao. 2015. Three-dimensional simulation of Lake Ontario north-shore hydrodynamics and contaminant transport. J. Hydraul. Eng. ASCE, 141(3), http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000963
30. McCombs, M.P., Mulligan, R.P., Boegman, L. and Yerubandi R Rao. 2014. Modelling surface waves and wind-driven circulation in eastern Lake Ontario during winter storms. J. Great Lakes Res. 40(S3): 130-142, http://dx.doi.org/10.1016/j.jglr.2014.02.009
29. Bouffard, D., Boegman, L., Ackerman, J.D., Valipour, R., and Rao, Y.R. 2014. Near-inertial wave driven oxygen transfer through the thermocline of a large lake. J. Great Lakes Res. 40(2), 300-307,http://dx.doi.org/10.1016/j.jglr.2014.03.014
28. Schwalb, A.N., Bouffard, D., Boegman, L., Leon, L., Winter, J.G., Molot, L. and Smith, R.E.H. 2014. 3D modelling of dreissenid mussel impacts on phytoplankton in a large lake supports the nearshore shunt hypothesis and the importance of wind-driven hydrodynamics. Aquat Sci. 20 pp. http://dx.doi.org/10.1007/s00027-014-0369-0
27. McCombs, M.P., Mulligan, R.P. and Boegman, L. 2014. Offshore Wind Farm Impacts on Surface Waves and Circulation in Eastern Lake Ontario. Coastal Engineering, 93:32–39.http://dx.doi.org/10.1016/j.coastaleng.2014.08.001
26. Oveisy, A., and Boegman, L. 2014. One-dimensional simulation of lake and ice dynamics during winter. J. Limnol. DOI: http://dx.doi.org/10.4081/jlimnol.2014.903
25. Bouffard, D., Ackerman, J.D., and Boegman, L. 2013. Factors affecting the development and dynamics of hypoxia in a shallow large stratified lake: Hourly to seasonal patterns. Water Resour. Res. 49: 14 pp. http://dx.doi.org/10.1002/wrcr.20241
24. Schwalb, A.N., Bouffard, D., Ozersky, T., Boegman, L. and Smith, R.E.H. 2013. Impact of hydrodynamics and benthic communities on phytoplankton distributions in a large, dreissenid-colonized lake (Lake Simcoe, Ontario, Canada). Inland Waters. 3: 269-284.
23. Scalo, C., Piomelli, U. and Boegman, L. 2013. Self-similar decay of dissolved oxygen concentration in an oscillating boundary layer in the intermittently turbulent regime. J. Fluid Mech. 726: 338-370.
22. Bouffard, D. and Boegman, L. 2013. A diapycnal diffusivity model for stratified environmental flows.Dyn. Atmos. Ocean.
http://dx.doi.org/10.1016/j.dynatmoce.2013.02.002. 61-62: 14-34. (Download PDF)
21. Scalo, C., Boegman, L. and Piomelli, U. 2013. Large-eddy simulation of variable sediment oxygen uptake in a transitional oscillatory flow. J. Geophys. Res . 118, doi:10.1002/jgrc.20113. 14 pp (Download PDF)
20. Dorostkar, A., Boegman L. 2013. Internal hydraulic jumps in a long narrow lake. Limnol. Oceanogr.58(1): 153'Äì172. (Download PDF)
19. Boegman, L., and Ivey, G.N. 2012. The dynamics of internal wave resonance in periodically forced lakes. J. Geophys. Res.117, C11002, doi:10.1029/2012JC008134, 16 pp. (Download PDF)
18. Scalo, C., Piomelli, U. and Boegman, L. 2012. Mass transport mechanisms at high Schmidt numbers from a turbulent flow to underlying weakly absorbing sediment layers. Phys Fluids. 24, 085103; doi: 10.1063/1.4739064. 16 pp. (Download PDF)
17. Boegman, L. and Sleep, S. 2012. Feasibility of bubble plume destratification of central Lake Erie. J. Hydraul. Eng. ASCE. doi: 10.1061/(ASCE)HY.1943-7900.0000626, 138: 985-989. (Download PDF)
16. Scalo, C., Piomelli, U. and Boegman, L. 2012. Large-eddy simulation of oxygen transfer to organic sediment beds. J. Geophys. Res., doi:10.1029/2011JC007289. 17 pp. (Download PDF)
15. Bouffard, D., Boegman, L and Yerubandi R. Rao. 2012. Poincar√© wave induced mixing in a large lake. Limnol. Oceanogr. 57(4), 1201'Äì1216. (Download PDF)
14. Oveisy, A., Boegman, L. and Imberger, J. 2012. Three-dimensional simulation of lake and ice dynamics during winter. Limnol. Oceanogr. 57(1), 2012, 43'Äì57. (Download PDF)
13. Aghsaee, P., Boegman, L., Diamessis, P.J. and Lamb, K.G. 2012. Boundary layer separation and vortex shedding beneath internal solitary waves.¬† J. Fluid Mech. vol. 690, pp. 321-344. (Download PDF)
12. Paturi, S., Boegman, L. and Yerubandi R. Rao. 2012. Hydrodynamics of Eastern Lake Ontario and upper St. Lawrence River. J. Great Lakes Res. 38 (Supp. 4), 194-204. (Download PDF)
11. Zhang, H., Culver, D.A. and Boegman, L. 2011. Dreissenids in Lake Erie: an algal filter or a fertilizer?Aquatic Invasions. 6: doi: 10.3391/ai.2011.6.2 (Download PDF)
10. Conroy, J.D., Boegman, L., Zhang, H., Edwards, W.J. and Culver, D.A. 2011. "Dead Zone" dynamics: the importance of weather and sampling intensity on calculated hypolimnetic oxygen depletion rates. Aquat. Sci. doi: 10.1007/s00027-010-0176-1. (Download PDF)
9. Aghsaee, P., Boegman, L., and Lamb, K.G. 2010. Breaking of shoaling internal solitary waves. J. Fluid Mech. 659: 289-317 doi:10.1017/S002211201000248X. (Download PDF)
8. Boegman, L., and Ivey, G.N. 2009. Flow separation and resuspension beneath shoaling nonlinear internal waves. J. Geophys. Res. 114, C02018, doi:10.1029/2007JC004411. (Download PDF)
7. Zhang, H., Culver, D.A. and Boegman, L. 2008. A two-dimensional ecological model of Lake Erie: Application to estimate dreissenid impacts on large lake plankton populations. Ecological Modelling. 214: 219-241.(Download PDF)
6. Boegman, L., M. R. Loewen, P. F. Hamblin, and D. A. Culver. 2008. Vertical mixing and weak stratification over zebra mussel colonies in western Lake Erie. Limnol. Oceanogr. 53: 1093-1110.(Download PDF)
5. Boegman, L., Loewen, M.R., Culver, D.A., Hamblin, P.F. and Charlton, M.N. 2008. Spatial-dynamic modelling of algal biomass in Lake Erie: Relative impacts of Dreissenid mussels and nutrient loads. J. Environmental Eng. ASCE. 134(6): 456-468. (Download PDF)
4. Boegman, L., Ivey, G.N. and Imberger, J. 2005. The degeneration of internal waves in lakes with sloping topography. Limnol. Oceanogr. 50: 1620-1637. (Download PDF)
3. Boegman, L., Ivey, G.N. and Imberger, J. 2005. The energetics of large-scale internal wave degeneration in lakes. J. Fluid Mech. 531: 159-180. (Download PDF)
2. Boegman, L., Imberger, J, Ivey, G.N. and Antenucci, J.P. 2003. High-frequency internal waves in large stratified lakes. Limnol. Oceanogr. 48: 895-919. (Download PDF)
1. Boegman, L., Loewen, M.R., Hamblin, P.F. and Culver, D.A. 2001. Application of a two-dimensional hydrodynamic reservoir model to Lake Erie. Can. J. Fish. Aquat. Sci. 58: 858-869. (Download PDF)
Books & Book Chapters
Yerubandi, R. Rao., Ackerman, J.D. and Boegman, L. [Eds.] 2012. Physical processes and water quality in natural waters. Water Qual. Res. J. Can. 47: 3-4, 462 pp. ISSN 1201-3080 (Download PDF)
Bouffard, D. and Boegman, L. 2012. Basin-scale internal waves. In L. Bengtsson and R.W. Herschy (Eds.)Encyclopedia of Lakes and Reservoirs. Springer. 102-107. **Invited contribution** (Download PDF)
Boegman L. 2009. Currents in Stratified Water Bodies 2: Internal Waves. In: G.E. Likens, (Ed.) Encyclopedia of Inland Waters. volume 1, pp. 539-558. Oxford: Elsevier. **Invited contribution** (Download PDF)
Selected Conference Papers
Boegman, L. 2014. Limitations of hydrodynamic models in simulating Great Lakes processes of varying scale. In proc. Modeling tools for analysis and forecasting of fish recruitment and its response to physical processes. Huron, OH, 23-25 June, 6 pp. (Download PDF)
Boegman, L., Aghsaee, P. and Dorostkar, A. 2013. Multiscale research on 3D dynamics of nonlinear internal wave and topography interaction. Proceedings 3rd Norway-Scotland Internal Waves Symposium. Oslo. Norway. Sept. 16 - 17. 2 pp. **Invited contribution**
McCombs, M.P., Mulligan, R.P., Boegman, L., Rao, Y.R. 2013. Wave propagation and growth in the Kingston Basin of Eastern Lake Ontario. Proceedings Canadian Society for Civil Engineering Annual Conference, Montreal, QC, May 29 - Jun 1, 8 pp.
Boegman, L. Shkvorets, I., Johnson, F. 2012.¬†Hypoxia and turnover in a small ice-covered temperate lake. Proceedings 21st IAHR International Symposium on Ice.¬†Dalian, China, June 11-15, 12 pp.(Download PDF)
Bouffard, D. Boegman, L. 2011. Spatio-temporal dynamics of the basin scale internal waves in Lake Simcoe. Proceedings 7th Int. Symp. on Stratified Flows, Rome, Italy, August 22 - 26, 2011, 6 pp.(Download PDF)
Boegman, L., and Dorostkar, A. 2011. Three-dimensional simulation of NLIW generation, propagation and breaking in Cayuga Lake. Proceedings 7th Int. Symp. on Stratified Flows, Rome, Italy, August 22 - 26, 2011, 8 pp. (Download PDF)
Boegman, L., and Aghsaee, P. 2011. Instability and resuspension beneath shoaling internal solitary waves. Proceedings Geophysical and Astrophysical Internal Waves, Les Houches, France, 6-11 Feb.**Invited contribution**
Boegman, L., Aghsaee, P. and Dorostkar, A. 2010. Evolution and degeneration of nonlinear internal waves in long narrow basins. Proceedings 2nd Norway-Scotland Internal Waves Symposium, Edinburgh, UK, 01-02 November, 4 pp. **Invited contribution**
Dorostkar, A., Boegman, L., Diamessis, P., and Pollard, A. 2010. Sensitivity of MITgcm to different model parameters in application to Cayuga Lake. Proceedings 6th International Symposium on Environmental Hydraulics, Jun. 23-25, Athens, Greece, 6 pp. (Download PDF)
Boegman, L. and Yerubandi, R. Rao. 2010. Process oriented modeling of Lake Ontario hydrodynamics. Proceedings 6th International Symposium on Environmental Hydraulics, Jun. 23-25, Athens, Greece, 6 pp.(Download PDF)
Boegman, L. and Ivey, G.N. 2007. Experiments on internal wave resonance in periodically forced lakes. Proceedings 5th International Symposium on Environmental Hydraulics, Dec. 4-7, Tempe, Arizona.(Download PDF)
Boegman, L. 2006. A model of the stratification and hypoxia in central Lake Erie. Proceedings 6th International Symposium on Stratified Flows. University of Western Australia, Dec. 11-14, 608-613.(Download PDF)
Lamb, K.G., Boegman, L. and Ivey, G.N. 2005. Numerical simulations of shoaling internal solitary waves in tilting tank experiments. Proceedings 9th European Workshop on Physical Processes in Natural Waters.Lancaster University, 31-38. (Download PDF)
Boegman, L., Ivey, G.N. and Imberger, J. 2004. An internal solitary wave parameterization for hydrodynamic lake models. Proceedings 15th Australasian Fluid Mechanics Conference. University of Sydney, CD Rom: AFMC00098, 4 pp. (Download PDF)
Boegman, L. 2004. The degeneration of intenal waves in lakes with sloping topography. Ph.D. thesis, Centre for Water Research, Department of Environmental Engineering, University of Western Australia.(Download PDF)
Boegman, L. 1999. Application of a two-dimensional hydrodynamic and water quality model to Lake Erie. M.A.Sc. thesis, Environmental Fluid Dynamics Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto. (Download PDF)
People in the Environmental Fluid Dynamics Laboratory
Dr. Leon Boegman
My research activities focus on hydrodynamic transport and mixing processes in the aquatic environment and their impact upon surface water quality. Recently, my lab has been developing process-based models to aid lake and wastewater pond management. This includes models for deep-water oxygen concentrations, fish habitat, turbulent mixing, wave uprush, sediment resuspension, harmful algae blooms and the impacts of both climate change and offshore infrastructure development on water resources.
Dr. Aidin Jabbari
Dr. Hadiseh Bolkhari
Co-supervised with Dr. Y. Zhao (OMNRF)
Research Topic: Resuspension and turbulence in Lake Erie
Ricardo Roman Botero
Research Topic: Modelling Harmful Algae Blooms in lakes
Fatemeh Gholami Mahyari
Co-supervised with Dr. R. Mulligan, Dr. P. Champagne, Dr. da Silva and Dr. Filion
Research Topic: Water quality modelling of Wastewater Stabilization Ponds
Co-supervised with Dr. R. Mulligan, Dr. da Silva, Dr. Filion and Dr. Champagne
Research Topic: Hydrodynamic modelling of Wastewater Stabilization Ponds
Former Students & Fellows
- Dr. Aidin Jabbari (PhD 2015; presently Post-Doc at Queen's)
- Turbulent boundary layers
- Dr. Payam Aghsaee (Postdoctoral Fellow 2001-12; presently Post-Doc at Iowa State)
- Solitary wave resuspensiuon
- Dr. Hadiseh Bolkhari (PhD 2015; presently Post-Doc at Queen's/CRCA)
- Turbulent boundary layers
- Matthew McCombs (MSc 2013; presently consulting engineer)
- Impacts of offshore wind farms
- Dr. Shastri Paturi (PhD 2012; presently NOAA scientist)
- Effluent modelling in lakes
- Dr. Damien Bouffard (Postdoctoral Fellow 2009-12; presently faculty member at EAWAG-ETH)
- Turbulence, internal waves and hypoxia in lakes
- Daniel S. Morikawa (Visiting Undergrad 2013; presently undergrad at University of Sao Paulo)
- Impacts of lakeshore capacity on hypoxia and cold-water fisheries
- Dr. Ali Oveisy (Postdoctoral Fellow 2011-12; presently Visiting Scientist at Environment Canada)
- Numerical simulation of ice cover on lakes
- Dr. Abbas Dorostkar (PhD 2012; presently a consulting engineer)
- Massively parallel RANSE simulations of internal waves in lakes
- Dr. Reza Valipour (PhD 2012; presently Visiting Scientist at Environment Canada)
- Internal wave and sediment dynamics in Lake Erie
- Dr. Carlo Scalo (PhD 2012; presently Assistant Professor at Purdue)
- Large-Eddy Simulation and modelling of dissolved oxygen transport and depletion in water bodies
- Dr. Payam Aghsaee (PhD 2011)
- Dynamics of internal solitary wave and bottom boundary interaction
- Christian Sonekan (Research Assistant)
- Modelling impacts of climate change on Ontario Lakes
- Sylvia Sleep (Undergrad; presently MSc student at UofT)
- Feasibility of bubble plume destratification of Lake Erie
- Erin Hall (MSc 2008; presently a consulting engineer)
- Hydrodynamic modelling of Lake Ontario (Download PDF 14 MB)
- Erin Hall (NSERC Undergrad)
- Lake Ontario hydrodynamics
- Marc Pichette (NSERC Undergrad)
- Impacts of climate change on central Lake Erie thermal structure
- Karan Bhawsinka (Visiting Undergrad from IIT Kharagpur)
- Combined sewer overflow modelling in the upper St. Lawrence River
- Perrine Leclerc (Visiting MSc from Institute of Sci. & Eng. Toulon)
- Hydrodynamics of eastern Lake Ontario and the upper St. Lawrence River
Extensive laboratory facilities and instrumentation are available at the Environmental Fluid Dynamics Laboratory, located within the 1,860 square meter Queen's University Coastal Engineering Research Laboratory.
Queen's University is ideally located on the shore of Lake Ontario. Field research is conducted throughout the Great Lakes in collaboration with the National Water Research Institute of Environment Canada. Field studies are also possible in smaller Canadian Shield lakes including the Queen's University Biological Station and Eagle Lake field site.
- 20 m glass walled internal wave flume
- 1.5 m diameter rotating table
- Oscillating water tunnel for research on boundary layers
- Three 61 m long wave flumes with irregular wave generators
- Coastal models basin (21m x 21m) equipped with an irregular wave generator
- 30.5 m sediment transport fume
- LaVision dual camera coupled PLIF / PIV facility (15 Hz, 2048 pix, 16-bit)
- Surface and internal wave gauges
- Laser and Acoustic Doppler anemometers
- Conductivity and temperature microstructure profilers
- Digital video cameras
Numerical animation of shoaling nonlinear internal wave (in collaboration with K.G. Lamb).
- Dual processor dual core AMD Opteron workstation (3.6 GHz, 32 MB, 30 TB)
- Access to the Centre for Advanced Computing (http://cac.queensu.ca)
- Linux, Windows and Mac machines for serial code and image/data acquisition
Numerical animation of Lake Erie surface temperature during 2008 (movie provided by W. Liu).
- SCAMP microstructure profiler (CTD, Tu, Fl)
- PME t-chains and RBR 1060 fast response thermistors
- Land based and buoy mounted meteorological stations
- Nortek Aquadopp acoustic Doppler current profilers (2MHz, 600kHz, 400kHz)
- Nortek Vector acoustic Doppler velocimeter
- RBR XR-620 handheld CTD + DO + Tu + Fl
- Various moored Tu, DO and Fl sensors
Deploying an instrument tripod from the CCGS Limnos in central Lake Erie
My research activities focus on transport and mixing processes in the aquatic environment and their impact upon water quality. Recently, my lab has been developing process-based models to aid lake management. This includes models and parameterizations for deep-water oxygen concentrations, turbulent mixing, sediment resuspension, harmful algae blooms and the impacts of both climate change and offshore infrastructure development on water resources. Selected research themes include:
Internal waves, turbulence and mixing in stratified flows:
Field measurements are collected and computational models are applied to investigate the circulation and mixing dynamics in lakes and coastal oceans. Recent work has focused on developing parameterizations for turbulent diffusivity from temperature microstructure measurements and improving observation of turbulent dissipation in bottom boundary layers.
Video of internal wave generation in tilting tank experiment (top) and false colour video of breaking internal solitary wave (bottom). The lower panel is indicated as a gray shaded region in the upper panel. From Boegman, Ivey and Imberger (2005; Limnol. Oceanogr.)
Sediment resuspension in lakes and coastal oceans:
Lab experiments and field-scale numerical models are being applied to understand how wave-generated currents resuspend sediment material in lakes and coastal oceans.
True-color bed sediment response to passage of an internal solitary wave of depression. The pycnocline is shown in green and the sediments appear orange. From Aghsaee and Boegman (2015;J. Geophys. Res.).
Hydrodynamic and water quality modelling in lakes:
Computer models have developed to the stage where they can be routinely applied by managers, engineering consultants and researchers for diagnostic and prognostic simulations of aquatic hydrodynamics and water quality (e.g., effects of nutrient loads on eutrophication). My group is developing and applying computer models for management of the Great Lakes and inland waters.
Modelled spring through fall temperature and dissolved oxygen contours in Lake Erie during 1994. Note hypoxic bottom water in central basin. From Boegman, Loewen, Culver, Hamblin and Charlton (2008; J. Environ. Eng.).
Development of calibration-free Sediment Oxygen Demand models:
The Sediment Oxygen Demand (SOD) is a parameter that regulates deep water oxygen concentrations in lakes and reservoirs. However, in computer based lake management models, the SOD is typically a constant variable that is tuned so that model results match observations. This has no predictive value. My group is performing high-resolution numerical simulations and analyzing field data to develop calibration-free SOD algorithms.
Contours of instantaneous wall-shear stress (top), mass flux at the sediment water interface (middle) and dissolved oxygen concentration at the sediment water interface (bottom). Black arrows highlight different transport events. From Scalo, Piomelli and Boegman (2012; Phys. Fluids).
Ice modelling in lakes:
Ice cover algorithms are being develloped to enable lake managment models to be run through winter.
Modelled ice thickness on Lake Ontario during winter 2006–2007. From Oveisy, Boegman and Imberger (2012; Limnol. Oceanogr.).
Shoreline protection: Wind farm effects, wave uprush
Management of wastewater stabilization and stormwater ponds:
Effects of climate change on fish habitat and harmful algae blooms
CIVL 451 - Lake, Reservoir and Coastal Engineering
The fundamental hydraulic processes regulating lake hydrodynamics, reservoir operation, and coastal engineering are discussed. Topics include wave theory, wave measurement, wave record analysis, wave transformation, seiches, tides, storm surges, turbulent mixing and transport of pollutants. Student projects are assigned on computational reservoir modeling, analysis of field data and reservoir operation as well as the design of breakwaters and ocean structures and the use of hydraulic and numerical coastal models. Prerequisites: CIVL 350 or permission of the instructor.
CIVL 350 - Hydraulics II
Topics in open channel flow including friction, specific energy, free-surface profiles, culverts and hydraulic-jump energy dissipaters. Lake dynamics and environmental hydraulics will be introduced. The basic underlying concepts of water resources and hydrology will be discussed. (0/5/0/10/33)
CIVL 260 - Civil Engineering Design I
The objectives of this introductory course are: to introduce students to engineering design and the challenges and excitement of the civil engineering profession; to develop written and oral communications skills; to develop an appreciation and ability for teamwork, creativity and time/project management; to develop skills in idea generation, creative problem solving, and research; and to develop skills in using computer applications in engineering design and analysis. The course exposes students to civil engineering design through case studies and group projects. Students are expected to learn about the design process through practice and, where possible, through implementation. Design projects are team-based and as such students need to learn how to work effectively with their peers. Sketching and AutoCAD are also be introduced and used. The design principles and concepts introduced will be used in follow-on courses throughout students' degrees. (0/0/12/12/24)
CIVL 852 - Environmental Fluid Dynamics
Topics to include: conservation equations for turbulent flows; wall-bounded shear flows; spectral dynamics; measurement and modelling of mixing and dissipation in stratified flows; stability of stratified flows; linear, nonlinear and dispersive waves; internal wave breaking; convection. Theory will be discussed with reference to field observation, computational and laboratory modelling of lake and ocean flows. Three term-hours, winter.
CIVL 855 (Subtopic) - Hydrodynamics of Lakes, Reservoris and Coastal Oceans
This introductory level graduate course covers the fundamental geophysical fluid dynamics processes occurring in lakes, reservoirs and coastal oceans. Topics include: wave theory, wave measurement, wave record analysis, wave transformation, seiches, Rossby, Kelvin and Poincare waves, Ekman dynamics, tides, storm surges, nonlinear internal waves, turbulent dissipation and mixing.