Accurate computation of contact discontinuities in flows with general equations of state

✍ Scribed by S. Clerc

• Book ID: 104268171
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 646 KB
• Volume: 178
• Category: Article
• ISSN: 0045-7825
• DOI: 10.1016/s0045-7825(99)00017-1

✦ Synopsis

The evolution of a contact discontinuity in a real ¯uid ¯ow is particularly dicult to compute with a conservative scheme. Indeed, Godunov-type schemes involve an averaging step which may create an intermediate state with an incorrect pressure. Spurious acoustic waves are then generated. These waves aect transient simulations as well as implicit time-marching procedures for steady-state computations. However, a formulation involving the pressure as a dependent variable can be used to restore a fast convergence for steady-state computations.