Mark Tachie

Area

Turbulent shear flows; Turbulent boundary layers, Bluff body hydrodynamics, Turbulent jets, Open channel hydraulics, Porous media, Particle image velocimetry.

Expertise

Turbulence, experimental fluid dynamics.

Research description

Dr. Tachie’s research has been devoted to experimental investigation of rough-wall turbulent boundary layers, separated and reattached turbulent flows, turbulent jets and free surface flows. His lab is equipped with state-of-the-art time-resolved particle image velocimetry (PIV) systems, including stereoscopic PIV, tomographic PIV and particle tracking velocimetry.

Dr. Mark Tachie received his BSc in Mechanical Engineering with First Class from Kwame Nkrumah University of Science and Technology, Ghana, in 1993. He obtained his MSc and PhD from the University of Saskatchewan in 1998 and 2001, respectively, which he completed on University of Saskatchewan Fellowship and NSERC Postgraduate Scholarship. He was the recipient of the Governor General Award, which is awarded for academic excellence to the student who achieves the highest academic standing at the graduate level, and the University of Saskatchewan Graduate Thesis Award in Physical and Engineering Sciences in recognition of outstanding contribution for his PhD thesis on Open Channel Turbulent Boundary Layers and Wall Jets on Rough Surfaces. He was an NSERC post-doctoral fellow at the University of Toronto in 2001. Dr. Tachie was appointed as a tenure-track Assistant Professor at the University of Manitoba in 2001, and was promoted to Associate Professor and Full Professor in 2005 and 2009, respectively. Dr. Tachie is an internationally recognized expert in the field of turbulent shear flows. He has published more than 300 peer-reviewed papers in journals and conferences. He was the recipient of the 2010 Rh Award for his outstanding contributions in scholarship and research in the Applied Sciences, and the University of Manitoba nominee for NSERC’s E.W.R. Steacie Memorial Fellowships in 2011 and 2012. Dr. Tachie is a Registered Professional Engineer in the Province of Manitoba. He was an Associate Editor of ASME Journal of Fluid Engineering from 2010 to 2017, the Department of Mechanical Engineering Associate Head (Graduate Programs) from 2011 to 2019, and Acting Head from 2016 to 2017.

Essel, E.E., Balachandar, R., and Tachie, M.F, 2022, ‘The Effects of Sheltering on the Unsteady Wake Dynamics of Tandem Cylinders Mounted in a Turbulent Boundary Layer’, Journal of Fluid Mechanics, In Press.

Fang, X., Tachie, M.F., and Dow, K., 2022, ‘Turbulent Separations beneath Semi-submerged Bluff Bodies with Smooth and Rough Undersurfaces’, Journal of Fluid Mechanics, 947, A19.

Kumahor, S., and Tachie, M.F., 2022, ‘Turbulent Flow around Rectangular Cylinders with Different Streamwise Aspect Ratios’, Journal of Fluids Engineering’, 144(5), 051304.

Fang, X., Tachie, M.F., Bergstrom, D.J., Yang, Z., and Wang, B-C., 2021, ‘Three-Dimensional Structural Characteristics of Flow Separation Induced by a Forward-Facing Step in a Turbulent Channel Flow’, Journal of Fluid Mechanics, 919, A24.

Essel, E.E., Tachie, M.F, and Balachandar, R., 2021, ‘Time-Resolved Wake Dynamics of Finite Wall-Mounted Circular Cylinders Submerged in a Turbulent Boundary Layer’, Journal of Fluid Mechanics, 917, A8.

Aleyasin, S.S., Tachie, M.F., and Balachandar, R., 2021, ‘Characteristics of Flow past Elongated Bluff Bodies with Underbody Gaps due to Varying Inflow Turbulence’, Physics of Fluids, 33(12), 125106.

Morris, E.M., Aleyasin, S.S., Biswas, N., and Tachie, M.F., 2020, ‘Turbulent Properties of Triple Elliptic Free Jets with Various Nozzle Orientation’, ASME Journal of Fluid Engineering, 142(3), 031106.

Fang, X., and Tachie, M.F., 2020, ‘Spatio-Temporal Dynamics of Flow Separation Induced by a Forward-Facing Step Submerged in a Thick Turbulent Boundary Layer’, Journal of Fluid Mechanics, 892, A40.

Fang, X., and Tachie, M.F., 2019, ‘Flows over Surface-Mounted Bluff Bodies with Different Spanwise Widths Submerged in a Deep Turbulent Boundary Layer’, Journal of Fluid Mechanics, 877, pp. 717-758.

Fang, X., and Tachie, M.F., 2019, ‘On the Unsteady Characteristics of Turbulent Separations over a Forward-Backward-Facing Step’, Journal of Fluid Mechanics, 863, pp. 994-1030.

Aleyasin, S.S., and Tachie, M.F., 2019, ‘Statistical Properties and Structural Analysis of Three-Dimensional Twin Round Jets due to Variation in Reynolds Number’, International Journal of Heat and Fluid Flow, 76, pp. 215-230.

Essel, E.E., and Tachie, M.F., 2018, ‘Submerged Turbulent Twin Jets Interacting with a Free Surface and a Solid Wall’, International Journal of Heat and Fluid Flow, 1, pp. 27-38.

Tay, G.F.K., Mishra, A., Kuhn, D.C.S. and Tachie, M.F., 2017, ‘Free Surface Effects on the Statistical Properties of a Submerged Rectangular Jet’, Physics of Fluids, 29, 025101.

Silva, A.T., Katopodis, C., Tachie, M.F., Santos J.M., and Ferreira, M.T., 2015, ‘Downstream Swimming Behaviour of Catadromous and Potamodromous Fish over Spillways: Downstream Fish Passage Behaviour over Spillways’, River Research and Applications. 32(5), pp. 935-945.

Tay, G.F., Kuhn, D., and Tachie, M.F., 2015, ‘Effects of Sedimenting Particles on the Turbulence Structure in a Horizontal Channel Flow’, Physics of Fluids, 27(2), 025106.

Arthur, J., Ruth, D.W., and Tachie, M.F., 2009, ‘PIV Measurements of Flow through a Model Porous Medium with Varying Boundary Conditions’, Journal of Fluid Mechanics, 629, pp. 343-374.

Tachie, M.F., James, D.F., and Currie, I.G., 2003, ‘Velocity Measurements of a Shear Flow Penetrating a Porous Medium’, Journal of Fluid Mechanics, 493, pp. 319-343.