Non-polytropic effect on shock-induced phase transitions in a hard-sphere system

作者：Zheng Yue^*; Zhao Nanrong; Ruggeri Tommaso; Sugiyama Masaru; Taniguchi Shigeru

来源：Physics Letters A, 2010, 374(33): 3315-3318.

DOI：10.1016/j.physleta.2010.06.016

• Non-polytropic hard-sphere system
• Shock wave
• Shock-induced phase transition
• Rankine-Hugoniot relations
• Stability of shock waves
• Liu condition

By adopting a simplified model of a non-polytropic hard-sphere system where heat capacity depends on the temperature, we demonstrate the importance of non-polytropic effect on the shock-induced phase transitions. We show explicitly that with the increase of the shock strength the perturbed temperature (the temperature after a shock) increases and the vibrational modes are gradually excited, and as a result, shock-induced phase transitions are qualitatively and quantitatively different from the phase transitions observed in a simple polytropic model. The effect on the admissibility (stability) of a shock wave is also analyzed.

• 出版日期2010-7-19
• 单位四川大学