Noble-Abel强化气体中激波/扰动相互作用的线性相互作用近似

IF 1.7 4区 工程技术 Q3 MECHANICS
G. Farag, P. Boivin, P. Sagaut
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引用次数: 0

摘要

当考虑偏离理想气体状态方程时,由于其简单的形式,Noble-Abel强化气体模型是一个吸引人的和通用的候选者。将线性相互作用近似形式推广到考虑非理想气体效应的状态方程。Kovásznay在这个状态方程的背景下,给出了扰动能量的分解和适当的定义。研究了理想气体的传递函数、临界角和压缩系数的变化。这些差异对冲击波的阻尼和波动传递产生了具体的影响。通过考虑熵点与3马赫静止激波的相互作用,进一步说明了这些变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Linear interaction approximation for shock/disturbance interaction in a Noble–Abel stiffened gas

Linear interaction approximation for shock/disturbance interaction in a Noble–Abel stiffened gas

When departure from the ideal gas equation of state is considered, the Noble–Abel stiffened gas model is an appealing and versatile candidate due to its simple form. The linear interaction approximation formalism is extended to consider non-ideal gas effects introduced by this equation of state. Kovásznay decomposition and adequate definition of the energy of disturbances are provided in the context of this equation of state. Changes with respect to ideal gas are investigated on transfer functions, critical angle, and compression factor. Those differences yield concrete effects on the damping and transfer of fluctuations across shock waves. Those changes are further illustrated by considering the interaction of an entropy spot with a Mach 3 stationary shock wave.

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来源期刊
Shock Waves
Shock Waves 物理-力学
CiteScore
4.10
自引率
9.10%
发文量
41
审稿时长
17.4 months
期刊介绍: Shock Waves provides a forum for presenting and discussing new results in all fields where shock and detonation phenomena play a role. The journal addresses physicists, engineers and applied mathematicians working on theoretical, experimental or numerical issues, including diagnostics and flow visualization. The research fields considered include, but are not limited to, aero- and gas dynamics, acoustics, physical chemistry, condensed matter and plasmas, with applications encompassing materials sciences, space sciences, geosciences, life sciences and medicine. Of particular interest are contributions which provide insights into fundamental aspects of the techniques that are relevant to more than one specific research community. The journal publishes scholarly research papers, invited review articles and short notes, as well as comments on papers already published in this journal. Occasionally concise meeting reports of interest to the Shock Waves community are published.
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