Effect of surface radiation on transient natural convection in a wavy-walled cavity

Mikhail A. Sheremet, Igor V. Miroshnichenko

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Transient natural convection in a differentially heated square cavity that has one vertical wavy wall has been studied numerically. The domain of interest is bounded by vertical isothermal walls and horizontal adiabatic walls. The governing equations formulated in dimensionless stream function, vorticity, and temperature, within the Boussinesq approximation with corresponding initial and boundary conditions, have been solved using an iterative implicit finite-difference method. The main objective is to investigate the effect of the dimensionless time 0 ≤ τ ≤ 0.4, Rayleigh number 104 ≤Ra ≤ 106, surface emissivity 0 ≤ ε < 1, undulations number 1 ≤ ≤ 6, and shape parameter 0.6 ≤ a ≤ 1.4 on fluid flow and heat transfer. Results are presented in the form of streamlines, isotherms, and distribution of average total Nusselt number at the wavy wall.

Original languageEnglish
Pages (from-to)369-382
Number of pages14
JournalNumerical Heat Transfer; Part A: Applications
Volume69
Issue number4
DOIs
Publication statusPublished - 16 Feb 2016

ASJC Scopus subject areas

  • Numerical Analysis
  • Condensed Matter Physics

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