Adaptive grid embedding navier-stokes technique for cascade flows

Roger L. Davis, John F. Dannenhoffer

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A new two-dimensional adaptive grid embedding technique for the efficient and accurate calculation of the Navier-Stokes equations is presented. This procedure represents a combination of the adaptive Euler procedure developed by Dannenhoffer and Baron and the cascade viscous flow analysis of Davis et al. Steady-state solutions are computed using an explicit, finite-volume, time marching technique in which global and embedded meshes are coupled via a multiple-grid algorithm. Solutions are presented for in viscid as well as turbulent viscous flows through quasi-three-dimensional turbomachinery cascades, demonstrating that the current procedure can accurately and efficiently track complex flows with multiple length scale phenomena such as shocks, separated flows, shock/boundary-layer interactions, trailing edge base flows, and wakes. These results show the merit of using an "intelligent" grid system within a Navier-Stokes solution procedure, which automatically refines the computational grid around flow features to obtain grid independent solutions and eliminate user interaction and corresponding multiple-pass calculations. In addition, these results show that the current Navier-Stokes technique provides an adequate model of the physics of complex turbomachinery flows.

Original languageEnglish (US)
Pages (from-to)792-799
Number of pages8
JournalJournal of Propulsion and Power
Volume7
Issue number5
DOIs
StatePublished - Jan 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science

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