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Keywords: wall roughness
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Proceedings Papers

Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A042, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20257
... elevated regions of the Reynolds stresses, eddy viscosity and correlation coefficient are observed in both cases with the peak values at a vertical location corresponding to the maximum elevation of the mean separating streamline. flow separation wall roughness bluff body THE EFFECTS OF UPSTREAM...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A043, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20258
... layer thicknesses were 4.3 and 6.7 times the step height in the smooth and fully rough wall cases, respectively. The Reynolds number based on the step height and free-stream velocity was 7800. The effects of upstream wall roughness on the instantaneous separated shear layer, frequency spectra and two...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 1875-1887, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78090
...: drag, gravity-buoyancy and lift forces (slip-shear and slip-rotational). Moreover, interparticle and particle-rough wall collisions are taken into account by means of stochastic approaches. The effect of the different mechanisms, i.e. wall roughness, inter-particle collisions and mass loading...