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A critical comparison of several low reynolds number k-epsilon turbulence models for flow over a backward facing step
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Steffen Jr., C. J. |
| Copyright Year | 1993 |
| Description | Turbulent backward-facing step flow was examined using four low turbulent Reynolds number k-epsilon models and one standard high Reynolds number technique. A tunnel configuration of 1:9 (step height: exit tunnel height) was used. The models tested include: the original Jones and Launder; Chien; Launder and Sharma; and the recent Shih and Lumley formulation. The experimental reference of Driver and Seegmiller was used to make detailed comparisons between reattachment length, velocity, pressure, turbulent kinetic energy, Reynolds shear stress, and skin friction predictions. The results indicated that the use of a wall function for the standard k-epsilon technique did not reduce the calculation accuracy for this separated flow when compared to the low turbulent Reynolds number techniques. |
| File Size | 7959497 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930023011 |
| Archival Resource Key | ark:/13960/t80k7980t |
| Language | English |
| Publisher Date | 1993-06-01 |
| Access Restriction | Open |
| Subject Keyword | Numerical Analysis High Reynolds Number Low Reynolds Number Reynolds Stress Turbulence Turbulent Flow Skin Friction Shear Stress K-epsilon Turbulence Model Kinetic Energy Separated Flow Backward Facing Steps Walls Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
