A numerical method for natural convection and heat conduction around and in a horizontal circular pipe

Satoru Yamamoto, Daisuke Niiyama, Byeong Rog Shin

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Natural convection around a horizontal circular pipe coupled with heat conduction in the solid structure is numerically investigated using a preconditioning method for solving incompressible and compressible Navier-Stokes equations. In this method, fundamental equations are completely reduced to an equation of heat conduction when the flow field is static (zero velocity). Therefore, not only compressible flows but also very slow flows such as natural convection in a flow field and heat conduction in a static field can be simultaneously calculated using the same computational algorithm. In this study, we first calculated the compressible flow around a NACA0012 airfoil with conduction in the airfoil and then simulated natural convections around a horizontal circular pipe with a different heat conductivity. Finally, we numerically investigated the effect of heat conductivity of the pipe on natural convection.

Original languageEnglish
Pages (from-to)5781-5792
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume47
Issue number26
DOIs
Publication statusPublished - 2004 Dec 1

Keywords

  • Coupling problem
  • Heat conduction
  • Natural convection
  • Preconditioning method

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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