Non-planar and Non-linear Second Sound Waves in He Ⅱ  

作　　者：ZHANG Peng KIMURA Seiji MURAKAMI Masahide WANG Ru-zhu 张鹏;木村誠司;村上正秀;王如竹(Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200030;Institute of Engineering Mechanics and Systems,University of Tsukuba,Tsukuba-city,305-8573,Japan)

机构地区：[1]Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200030 [2]Institute of Engineering Mechanics and Systems,University of Tsukuba,Tsukuba-city,305-8573,Japan

出　　处：《Chinese Physics Letters》2000年第1期43-45,共3页中国物理快报（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No.59876018.

摘　　要：Non-planar and non-linear second sound wave are experimentally investigated in an open He Ⅱ bath.It is found that second sound wave characterized by a negative tail part in an open He Ⅱ bath is different from that propagating through a channel,and the shape of the negative tail part of second sound wave varies at different location in an open He Ⅱ bath.Theoretical consideration is also carried out based on two-fluid model and vortex evolution equation.It is found that experimental and theoretical results agree rather well with each other.Second sound wave may develop into the thermal shock wave provided that the heat Hux is large.

关 键 词：equation. PLANAR WAVE 

分 类 号：O35[理学—流体力学]