Open AccessEffect of wall-slip on natural convection in a square cavity
Author(s) -
Kartik Suresh,
C K Arjun,
Damu Murali,
Sunil Kumar
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1132/1/012040
Subject(s) - nusselt number , streamlines, streaklines, and pathlines , natural convection , slip (aerodynamics) , rayleigh number , mechanics , heat transfer , adiabatic process , materials science , thermodynamics , convection , combined forced and natural convection , physics , reynolds number , turbulence
Numerical simulations are performed to investigate the effect of wall-slip on natural convection inside a square cavity for Rayleigh number (Ra) = 10 5 . The bottom wall is heated and top wall is maintained at a cold temperature keeping the other two vertical walls adiabatic. The analysis is conducted by varying the Slip factor (SF) from 0 (no-slip) to 1 (full-slip) in steps of 0.2. For each value of SF, the flow patterns are visualised using streamlines and heat transfer behaviour is examined using isotherms. Results are quantified using local Nusselt number ( Nu l ) and average Nusselt number ( Nu avg ) along the hot wall. It is observed that for SF=0.8 and SF=1 configurations, the natural convection patterns and heat transfer characteristics undergo notable changes.