Understanding flame-acoustic coupling through high-fidelity DNS with detailed chemical kinetics and combustion tube experiments optimized for DNS

该项目旨在通过优化的实验和高保真的数值模拟来了解实际的火焰-声学相互作用。在项目过程中取得了实质性进展。在小规模半开口管中进行了实验，以此为基准来理解这种声学条件下的火焰声学相互作用。这样的实验在文献中是不存在的。还发现了点火能量的影响。这项实验的域名系统正在进行中。2D-DNS是在现代内燃机所期望的一系列热力学条件下进行的。发现了新的自燃方式。这对于理解内燃机中的超爆震现象是非常有用的。在国家/国际会议上介绍了成果，一些期刊正在进行中。

This project aimed to understand practical flame-acoustics interactions through optimised experiments and high fidelity numerical simulations. Substantial progress was achieved during the course of project. Experiments in small scale half-open tubes were performed as a benchmark to understand flame acoustic interactions in this acoustic condition. Such experiments were not available in the literature. Effect of ignition energy was also found. DNS of this experiment is under progress.2D-DNS was performed for a range of thermodynamic conditions expected in modern IC engines. New modes of autoignition were found. This is very useful to understand the super-knock phenomenon in the IC engines. Results were presented in national/international conferences and several journals are under progress.