Covariant velocity-based calculation procedure with nonstaggered grids for computation of pulsatile flows

D. Lee, J. J. Chiu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

A procedure for computing pulsatile flows in an arbitrary geometry is presented. The procedure is developed in a boundary-fitted coordinate system with a nonstaggered grid arrangement. The covariant velocity components are chosen as the dependent variables. To obtain the covariant velocities needed on the control surfaces, the physical contravanant velocities at the main grid are interpolated first and then convened to their covariant counterparts. A direct interpolation of the nonphysical covariant velocity components may induce a virtual velocity that leads to an erroneous solution. The procedure is employed to solve a moving indentation problem and a pulsatile backward-facing step flow.

Original languageEnglish
Pages (from-to)269-286
Number of pages18
JournalNumerical Heat Transfer, Part B: Fundamentals
Volume21
Issue number3
DOIs
Publication statusPublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Numerical Analysis
  • Modelling and Simulation
  • Condensed Matter Physics
  • Mechanics of Materials
  • Computer Science Applications

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