@inproceedings{2e2addad05604d6fa8d23e418bde8c6a,

title = "CFD study of flow over parallel ridges with varying height and spacing",

abstract = "A CFD study is performed for a two-dimensional model to simulate and investigate the turbulent flow interactions between three parallel ridges. Velocity profiles and turbulent kinetic energies are presented to illustrate the effects of varying the ridge height and separation distance. The numerical results are validated against extensive atmospheric wind tunnel data obtained from USEPA. Studies on different mesh configurations and inbuilt Reynolds averaged Navier-Stokes (RANS) turbulence models shows that the standard k-ε model predicts the flow field most accurately in relation to the TKE. General flow patterns involve flow separation in the windward corners and recirculation behind each ridge. An amplification of the velocity and TKE are observed as the ridge height increases, whereas larger separations result in lower velocities and significant variation in downwind TKE values.",

keywords = "CFD, Parallel ridges, Separation and recirculation, Turbulent kinetic energy, Atmospheric wind tunnel, Mesh configurations, Numerical results, Recirculations, Reynolds-Averaged Navier-Stokes, Separation distances, Two dimensional model, Velocity profiles, Kinetic energy, Navier Stokes equations, Parallel flow, Turbulence models, Turbulent flow, Computational fluid dynamics",

author = "Yik, {Lee Chin} and Salim, {Salim Mohamed} and Andrew Chan and Cheong, {Cheah Siew}",

note = "Conference code: 85243 Export Date: 13 June 2014 Correspondence Address: Yik, L. C.; Department of Mechanical, Manufacturing and Materials Engineering, Faculty of Engineering, University of Nottingham (Malaysia Campus), Jalan Broga, Semenyih, 43500 Selangor, Malaysia; email: proxc2y@hotmail.com References: Paterson, D.A., Apelt, C.J., Computation of wind flows over three-dimensional buildings (1986) J. Wind Eng. And Ind. Aerodynamics, 24, pp. 193-213; Zhang, Y.Q., Huber, A.H., Arya, S.P.S., Synder, W.H., Numerical Simulation to determine the effects of incident wind shear and turbulence on the flow around a building (1993) J. Wind Eng. And Ind. Aerodynamics, 46-47, pp. 129-134; Zhou, Y., Stathopoulos, T., A new technique for the numerical simulation of wind flow around buildings (1997) J. Wind Eng. And Ind. Aerodynamics, 72, pp. 137-147; Cowan, I.R., Castro, I.P., Robins, A.G., Numerical considerations for simulations of flow and dispersion around buildings (1997) J. Wind Eng. Ind. Aerodynamics, 67-68, pp. 535-545; Alexander, Y., Liu, H., Nikitin, N., Turbulent flow around a wall mounted cube: A direct numerical simulation (2006) Int. J. Heat and Mass Transfer, 27, pp. 994-1009; Ratnam, G.S., Vengadesan, S., Performance of two equation turbulence models for prediction of heat transfer over a wall mounted cube (2008) Int. J. Heat and Mass Transfer, 51, pp. 2834-2846; Lien, F.S., Yee, E., Cheng, Y., Simulation of mean flow and turbulence over a 2D building array using high resolution CFD and a distributed drag flow approach (2004) J. Wind Eng. And Ind. Aerodynamics, 92, pp. 117-158; Brown, M.J., Lawson, R.E., Decroix, D.S., Lee, R.E., (2000) Comparison of Centerline Velocity Measurements Obtained Around 2D and 3D Building Arrays in a Wind Tunnel, , Report LA-UR-01-4138, Los Alamos National Laboratory, Los Alamos; World Congress on Engineering 2010, WCE 2010 ; Conference date: 30-06-2010 Through 02-07-2010",

year = "2010",

language = "English",

isbn = "978-988182107-2",

volume = "2",

pages = "1206--1211",

booktitle = "Proceedings of the World Congress on Engineering 2010",

}