Scaling of velocity fluctuations in off-wall boundary conditions for turbulent flows

Weak Dirichlet Boundary Conditions for Wall-Bounded Turbulent Flows

In turbulence applications, strongly imposed no-slip conditions often lead to inaccurate mean flow quantities for coarse boundary-layer meshes. To circumvent this shortcoming, weakly imposed Dirichlet boundary conditions for fluid dynamics were recently introduced in [4]. In the present work, we propose a modification of the original weak boundary condition formulation that consistently incorpo...

Zero crossings of velocity fluctuations in turbulent boundary layers

In this paper some results are presented on the statistical properties of zero crossings of turbulent velocity fluctuations in boundary layers over a wide range of Reynolds numbers. The earlier finding that the probability density function (pdf) of the intervals between successive zero crossings of the streamwise velocity fluctuation u can be approximated by two exponentials, ,* each with its o...

Wall-pressure Fluctuations and Pressure-velocity Correlations in Turbulent Boundary Layers

Turbulent Velocity Fluctuations That Mass Transfer to a Solid Boundary

ferred-Arc Reactor,” Ph.D. Thesis, McGill University (1981). Devoto, R. S., “Transport Coefficients of Partially Ionized Argon,” The Physics ofFluids, 10, (2). 354 (1967). Eddy, T. L., E. Pfender, and E. R, G. Eckert, “Spectroscopic Mapping of the Nonequilibrium Between Electron and Excitation Temperatures in a 1 Atm Helium Arc,” ZEEE Trans. on Plasma Science, Ps-1, (4), 31 (1973). Fauchais, P....

In-Vivo Quantification of Turbulent Velocity Fluctuations

P. Dyverfeldt, J-P. E. Kvitting, A. Sigfridsson, J. Engvall, A. F. Bolger, and T. Ebbers Department of Clinical Physiology, Linköping University, Linköping, Sweden, Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden, Department of Cardiothoracic Surgery, Linköping University Hospital, Linköping, Sweden, Department of Medicine, University of Califo...