文献类型：期刊文献

英文题名：Effects of temperature on Two-point statistical characteristics in turbulent jets

作者：Li, Hongru[1]; Lai, Huanxin[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

卷号：2854

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20244617351473)

语种：英文

摘要：Large eddy simulations are carried out for jets at Mach number 0.9, temperature ratio 2.0 and 3.4. Simulations are validated by comparing with experiments from literature. Two-point correlation- and coherence- functions are analyzed. Results show that the increment of jet temperature affects the decay rate of correlation functions. The correlation functions are analyzed both in space and time by employed a normalization method. The normalization coefficient is found changing with the temperature. Compared to spatial normalization coefficients, the time normalization coefficient is found more sensitive to the temperature. The coherence function is found asymmetric in the upstream and downstream of the reference point. The present attempt to construct an empirical model to normalize the coherence function, so as to provide reference for the study of acoustic field. ? 2024 Institute of Physics Publishing. All rights reserved.