Computation Of Turbulent Flows Over Backward Facing Step
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Direct Numerical Simulation of Turbulent Flow Over a Backward-facing Step
Author | : Stanford University. Thermosciences Division. Thermosciences Division |
Publisher | : |
Total Pages | : 250 |
Release | : 1994 |
Genre | : Fluid dynamics |
ISBN | : |
Computation of Turbulent Flows Using an Extended K-Epsilon Turbulence Closure Model
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 30 |
Release | : 2018-07-26 |
Genre | : |
ISBN | : 9781724264602 |
An extended kappa-epsilon turbulence model is proposed and tested with successful results. An improved transport equation for the rate of dissipation of the turbulent kinetic energy, epsilon, is proposed. The proposed model gives more effective response to the energy production rate than does the standard kappa-epsilon turbulence model. An extra time scale of the production range is included in the dissipation rate equation. This enables the present model to perform equally well for several turbulent flows with different characteristics, e.g., plane and axisymmetric jets, turbulent boundary layer flow, turbulent flow over a backward-facing step, and a confined turbulent swirling flow. A second-order accurate finite difference boundary layer code and a nearly second-order accurate finite difference elliptic flow solver are used for the present numerical computations. Chen, Y.-S. and Kim, S.-W. Unspecified Center NASA-CR-179204, NAS 1.26:179204 NAS8-35918
Instability, Transition, and Turbulence
Author | : M.Y. Hussaini |
Publisher | : Springer Science & Business Media |
Total Pages | : 626 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461229561 |
This volume contains the proceedings of the Workshop on In stability, Transition and Turbulence, sponsored by the Institute for Computer Applications in Science and Engineering (ICASE) and the NASA Langley Research Center (LaRC), during July 8 to August 2, 1991. This is the second workshop in the series on the subject. The first was held in 1989, and its proceedings were published by Springer-Verlag under the title "Instability and Transition" edited by M. Y. Hussaini and R. G. Voigt. The objectives of these work shops are to i) expose the academic community to current technologically im portant issues of transition and turbulence in shear flows over the entire speed range, ii) acquaint the academic community with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these capabilities, and iii) accelerate progress in elucidating the fundamental phenomena of transition and turbulence, leading to improved transition and turbulence modeling in design methodologies. The research areas covered in these proceedings include receptiv ity and roughness, nonlinear theories of transition, numerical simu lation of spatially evolving flows, modelling of transitional and fully turbulent flows as well as some experiments on instability and tran sition. In addition a one-day mini-symposium was held to discuss 1 recent and planned experiments on turbulent flow over a backward facing step.
Prediction of Turbulent Flow Over a Backward-facing Step
Author | : Albrecht Ruprecht |
Publisher | : |
Total Pages | : 41 |
Release | : 1986 |
Genre | : Aerodynamics |
ISBN | : |