Analysis of artificial dissipation models for the transonic full-potential equation Article

Dulikravich, GS. (1988). Analysis of artificial dissipation models for the transonic full-potential equation . AIAA JOURNAL, 26(10), 1238-1245. 10.2514/3.10034

cited authors

  • Dulikravich, GS

authors

abstract

  • Artificial density or viscosity (ADV) and artificial mass flux (AMF) concepts used in the iterative algorithms for the numerical solution of the transonic full potential equation (FPE) have been analyzed and compared with the exact physically dissipative potential (PDF) flow equation. Coefficients of the derivatives in the existing artificial dissipation models were found to produce only several of the physically existing derivatives. Moreover, the common artificial density and artificial viscosity formulations generate terms of the wrong magnitude, and even of the wrong sign, when compared to the PDF formulation. The AMF formulation, although imperfect, is shown to offer an alternative to the artificial density and artificial viscosity concepts. © 1988 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.

publication date

  • January 1, 1988

published in

Digital Object Identifier (DOI)

start page

  • 1238

end page

  • 1245

volume

  • 26

issue

  • 10