| タイトル | Calculations of Diffuser Flows with an Anisotropic K-Epsilon Model |
| 本文（外部サイト） | http://hdl.handle.net/2060/19960011371 |
| 著者（英） | Shih, T.-H.; Zhu, J. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1995-10-01 |
| 言語 | eng |
| 内容記述 | A newly developed anisotropic K-epsilon model is applied to calculate three axisymmetric diffuser flows with or without separation. The new model uses a quadratic stress-strain relation and satisfies the realizability conditions, i.e., it ensures both the positivity of the turbulent normal stresses and the Schwarz' inequality between any fluctuating velocities. Calculations are carried out with a finite-element method. A second-order accurate, bounded convection scheme and sufficiently fine grids are used to ensure numerical credibility of the solutions. The standard K-epsilon model is also used in order to highlight the performance of the new model. Comparison with the experimental data shows that the anisotropic K-epsilon model performs consistently better than does the standard K-epsilon model in all of the three test cases. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 96N17807
NASA-CR-198418
NAS 1.26:198418
E-9988
ICOMP-95-21
CMOTT-95-4
NIPS-96-07528 |
| 権利 | No Copyright |
