Heat transfer in pulsating flow and its impact on temperature distribution and damping performance of resonators (A03)

脉动流中的传热及其对谐振器温度分布和阻尼性能的影响（A03）

• 批准号: 49947622
• 金额: --
• 依托单位: Lehrstuhl für Thermofluiddynamik
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/49947622?language=en
• 关键词: Heat; transfer; pulsating; flow; its

This TP aims to develop methods for the precise prediction of the damping performance for acoustic resonators, with due consideration of temperature inhomogeneities and nonlinear effects. In FP3, the transient temperature distribution in resonators will determined by means of LES. In these simulations, the turbulent flow conditions within the combustion chamber and the conjugate heat transfer at the wall will be taken into account. Acoustic oscillation in the chamber and the resonator can enhance the axial heat transfer signifi-cantly. With the knowledge of the temperature profile in the resonator, its influence on the damping perfor-mance will be analyzed in a quantitative manner.

该TP旨在开发精确预测声学谐振器阻尼性能的方法，并适当考虑温度不均匀性和非线性效应。在FP3中，谐振器中的瞬态温度分布将通过LES确定。在这些模拟中，将考虑燃烧室内的湍流条件和壁面处的共轭传热。腔室和谐振腔中的声振荡可以显著地增强轴向换热。在了解谐振器内温度分布的基础上，定量分析了其对阻尼性能的影响。