Vectorized multigrid fluid flow calculations on a CRAY X‐MP/48

S. P. Vanka, K. P. Misegades

Research output: Contribution to journalArticlepeer-review


This paper discusses aspects of vectorizing a recently developed calculation procedure for multidimensional recirculating fluid flows. The solution algorithm uses a coupled Gauss‐Seidel relaxation operator in conjunction with the multigrid technique. The vectorization is performed on a CRAY X‐MP/48 using a single processor. In this paper, the vectorization techniques used and the observed speed‐ups are presented for a model problem of laminar flow in a two‐dimensional square cavity. Large scale calculations with up to one quarter of a million finite difference cells (512 x 512) have been made in 45s of CPU time.

Original languageEnglish (US)
Pages (from-to)635-648
Number of pages14
JournalInternational Journal for Numerical Methods in Fluids
Issue number6
StatePublished - Jun 1987
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics


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