Viscous stress relaxation, characteristics, and numerical boundary conditions | Zendy

Trapp John A. | Zendy; Ransom Victor H. | Zendy

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Viscous stress relaxation, characteristics, and numerical boundary conditions

Author(s) -

Trapp John A.,

Ransom Victor H.

Publication year - 1994

Publication title -

numerical methods for partial differential equations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.901

H-Index - 61

eISSN - 1098-2426

pISSN - 0749-159X

DOI - 10.1002/num.1690100309

Subject(s) - mathematics , relaxation (psychology) , elasticity (physics) , boundary value problem , mathematical analysis , boundary (topology) , physics , thermodynamics , psychology , social psychology

The anomalous infinite propagation speeds in the classical parabolic flow equations are removed by the inclusion of a small amount of fluid elasticity or viscous stress relaxation. The inclusion of such effects results in a hyperbolic system of equations with a complete set of characteristic equations. The directional characteristic equations are used to give insights into the appropriate boundary molecules to be used in finite difference numerical schemes. © 1994 John Wiley & Sons, Inc.

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