| タイトル | Implementation of the Baldwin-Barth turbulence model into the ZETA code and its diagnosis |
| 本文（外部サイト） | http://hdl.handle.net/2060/19940020167 |
| 著者（英） | Low, Scott L. |
| 著者所属（英） | California Polytechnic State Univ. |
| 発行日 | 1993-06-16 |
| 言語 | eng |
| 内容記述 | The Baldwin-Barth turbulence model was implemented into Zeta, a time-accurate, zonal, integro-differential code for incompressible laminar and turbulent flows. The implementation procedure is patterned after the model subroutine in ARC2D. The results of ZETA with the Baldwin-Barth turbulence model were compared with experimental data, with ZETA using Baldwin-Lomax model, and with ARC2D using the Baldwin-Barth model. The Baldwin-Barth model subroutine was tested by inputting an ARC2D velocity solution of an NACA-0012 airfoil at R(sub e) = 3.9 x 10(exp 6) and alpha = 5 deg. The resultant turbulent viscosity and Reynolds stresses compared favorably with the original data. For the same grid having grid points inside the laminar sublayer, which is necessary due to the one-equation nature of the model, ZETA however predicts early separation. It was found that the current ZETA has problem with such a fine grid. Further work is in progress to solve this problem. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 94N24640
NASA-CR-194795
NAS 1.26:194795 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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