タイトル | DNS of Flow in a Low-Pressure Turbine Cascade Using a Discontinuous-Galerkin Spectral-Element Method |
本文(外部サイト) | http://hdl.handle.net/2060/20150023513 |
著者(英) | Murman, Scott; Garai, Anirban; Diosady, Laslo Tibor; Madavan, Nateri |
著者所属(英) | NASA Ames Research Center |
発行日 | 2015-06-15 |
言語 | eng |
内容記述 | A new computational capability under development for accurate and efficient high-fidelity direct numerical simulation (DNS) and large eddy simulation (LES) of turbomachinery is described. This capability is based on an entropy-stable Discontinuous-Galerkin spectral-element approach that extends to arbitrarily high orders of spatial and temporal accuracy and is implemented in a computationally efficient manner on a modern high performance computer architecture. A validation study using this method to perform DNS of flow in a low-pressure turbine airfoil cascade are presented. Preliminary results indicate that the method captures the main features of the flow. Discrepancies between the predicted results and the experiments are likely due to the effects of freestream turbulence not being included in the simulation and will be addressed in the final paper. |
NASA分類 | Numerical Analysis; Fluid Mechanics and Thermodynamics |
レポートNO | GT2015-42773 ARC-E-DAA-TN18725 |
権利 | Copyright, Distribution as joint owner in the copyright |