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Rarefaction Waves in Liquid and Gas-Liquid Media

In recent years the thermodynamics of a substance having parameters close to critical values has attracted considerable attention from physicists, physicochemists, and thermal physicists. One can single out two basic reasons stimulating the increased interest in this problem: 1. Since the mid- l 950s, the findings of experimental studies have gone beyond the scope of the existing concepts based on the van der Waals equation for real gas. 2. The processes occurring in the apparatuses of interior ballistics, nuclear power, and chemical technology lie in wide ranges of temperature and pressure, including the critical state of a working body. The thermodynamics of a substance in the critical state has been exten­ sively studied, and a strong dependence of the thermodynamic parameters on the temperature and pressure near the critical point has been revealed. However, processes such as heat exchange and finite-amplitude waves (shock waves) have not been as thoroughly investigated in the region of the critical point. In fact, the question of the dynamics of finite-amplitude perturbations of pressure, density, and temperature in the critical region has not been considered at all. One should mention just one study devoted to shock waves near the critical point, namely that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Fluid Mechanics Annual Reviews
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