弛豫对等温声学行波的影响：基于纳维-斯托克斯-麦克斯韦理论的新型可解模型

IF 2.1 3区物理与天体物理 Q2 ACOUSTICS

Wave Motion Pub Date : 2024-09-18 DOI:10.1016/j.wavemoti.2024.103415

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引用次数: 0

摘要

本文分析了麦克斯韦流体的一个特殊子类中的等温声学行波，特别是那些行为类似于完美气体的流体，其中剪切粘度与质量密度的平方成正比。推导并分析了精确解，计算了冲击厚度结果，并验证了等温假设在热力学上与所考虑的马赫数值的一致性。结果表明，在两者都产生分散冲击剖面的范围内，麦克斯韦情况导致的冲击厚度明显小于相应的牛顿（流体）情况导致的非对称解剖面。

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The impact of relaxation on isothermal acoustic traveling waves: A new solvable model based on Navier–Stokes–Maxwell theory

An analysis of isothermal acoustic traveling waves in a particular sub-class of Maxwell fluids, specifically, those which behave like perfect gases and wherein the shear viscosity is proportional to the square of the mass density, is presented. Exact solutions are derived and analyzed, shock thickness results are computed, and the thermodynamic consistency of the isothermal assumption is verified vis-à-vis the Mach number values considered. It is shown that, within the range where both yield dispersed shock profiles, the Maxwell case leads to significantly smaller shock thicknesses and more asymmetric solution profiles than those admitted by the corresponding Newtonian (fluid) case.

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来源期刊

Wave Motion 物理-力学

CiteScore

4.10

自引率

8.30%

发文量

118

审稿时长

3 months

期刊介绍： Wave Motion is devoted to the cross fertilization of ideas, and to stimulating interaction between workers in various research areas in which wave propagation phenomena play a dominant role. The description and analysis of wave propagation phenomena provides a unifying thread connecting diverse areas of engineering and the physical sciences such as acoustics, optics, geophysics, seismology, electromagnetic theory, solid and fluid mechanics. The journal publishes papers on analytical, numerical and experimental methods. Papers that address fundamentally new topics in wave phenomena or develop wave propagation methods for solving direct and inverse problems are of interest to the journal.