Prediction of the Resonance Characteristics of Combustion Chambers on the Basis of Large-Eddy Simulation

• 来源期刊: 热科学学报（英文版）
• 学科: 物理学
• 年，卷（期）: 2005,（2）
• 页码范围: 156-161
• 页数: 6页
• 分类号: O359
• 语种: 英文

摘要

In the last few years intensive experimental investigations were performed at the University of Karlsruhe to develop an analytical model for the Helmholtz resonator-type combustion system. In the present work the resonance characteristics of a Helmholtz resonator-type combustion chamber were investigated using large-eddy simulations (LES), to understand better the flow effects in the chamber and to localize the dissipation. In this paper the results of the LES are presented, which show good agreement with the experiments. The comparison of the LES study with the experiments sheds light on the significant role of the wall roughness in the exhaust gas pipe.