Numerical method for compressible thermal convections of arbitrary substance

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A numerical method for simulating compressible thermal convections of arbitrary substance is presented. The numerical method is based on the preconditioning method proposed by the authors. This method is coupled with a database of thermochemical properties, PROPATH, developed by Kyushu University. Since PROPATH has accurate thermochemical models for 48 substances, the present method can calculate flows of such substances accurately. Also PROPATH can be used for not only substances in a gas state but also those in liquid and supercritical states. In this paper as numerical examples, natural convections in a square cavity for several substances, such as carbondioxide, water, nitrogen, methane and helium are calculated assuming gas and liquid conditions and the calculated results are compared with the existing numerical results and with each other. Especially, the natural convection of water liquid near 4°C is calculated and the anomalous convection is captured and the results are compared with the existing numerical and experimental results.

Original languageEnglish
Pages (from-to)2084-2090
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume74
Issue number10
DOIs
Publication statusPublished - 2008 Oct

Keywords

  • Arbitrary substance
  • Natural convection
  • Numerical method
  • PROPATH
  • Preconditioning method

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Numerical method for compressible thermal convections of arbitrary substance'. Together they form a unique fingerprint.

Cite this