System of balance laws;
Compressible fluid;
Riemann problem;
EULER EQUATIONS;
CONSERVATION-LAWS;
MOMENTUM;
SYSTEM;
ENERGY;
MASS;
D O I:
10.1007/s00033-019-1177-0
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We address the Riemann problem for the one-dimensional compressive flow of a van der Waals gas, in which the external force is a given continuous function of time. The explicit forms for shock wave, contact discontinuity and rarefaction wave are presented. The influence of van der Waals parameter on these elementary waves is discussed. Furthermore, we obtain six kinds of solutions to this Riemann problem and establish a condition for the occurrence of vacuum in the solutions. Particularly, all of the solutions are not self-similar in (t, x)-plane due to the presence of the time-dependent external force.
机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Matsushita, Satoru
Otsuka, Keigo
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机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Otsuka, Keigo
Sugihara, Taiki
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机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Sugihara, Taiki
Zhu, Guangyao
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机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Zhu, Guangyao
Kittipaisalsilpa, Kasidis
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Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Kittipaisalsilpa, Kasidis
Lee, Minhyeok
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Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Lee, Minhyeok
Xiang, Rong
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机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Zhejiang Univ, Sch Mech Engn, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R ChinaUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
Xiang, Rong
Chiashi, Shohei
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机构:
Univ Tokyo, Dept Mech Engn, Tokyo 1138656, JapanUniv Tokyo, Dept Mech Engn, Tokyo 1138656, Japan