DIFFUSIVE-DISPERSIVE TRAVELING WAVES AND KINETIC RELATIONS IV: COMPRESSIBLE EULER EQUATIONS
Abstract
The authors consider the Euler equations for a compressible fluid in one space dimension when the equation of state of the fluid does not fulfill standard convexity assumption and viscosity and capillarity effects are taken into account. A typical example of nonconvex constitutive equation for fluids is Van der Waals' equation. The first order terms of these partial differential equations form a nonlinear system of mixed (hyperbolic -elliptic) type. For a class of nonconvex equations of state, an existence theorem of traveling waves solutions with arbitrary large amplitude is established here. The autors distinguish between classical (compressive) and nonclassical (undercompressive) traveling waves. The latter do not fulfill Lax shock inequalities, and are characterized by the so-called kinetic relation, whose properties are investigated in this paper.
Document Code: A, Article ID: 0252-9599(2003)01-0017-18.
- Elastodynamics
- Phase transition
- Hyperbolic conservation law
- Diffusion
- Dispersion
- Shock wave
- Undercompressive
- Entropy inequality
- Kinetic relation
- 2000 MR Subject Classification 35L65
- 2000 MR Subject Classification 35M20
- 2000 MR Subject Classification 74J40
- 2000 MR Subject Classification 76N
- Chinese Library Classification 0175.27
- Chinese Library Classification 0175.25
- Chinese Library Classification 0347.5