Studying the effects of a longitudinal magnetic field and discrete isoflux heat source size on natural convection inside a tilted sinusoidal corrugated enclosure

摘要: In the present work, effects of longitudinal magnetic field and heat source size on natural convection transfer through a tilted sinusoidal corrugated enclosure for different values inclination angles are analyzed solved numerically by using finite volume technique based body fitted control volumes with collected variable arrangement. A constant flux is discretely embedded at central part bottom wall whereas remaining parts upper assumed adiabatic, two vertical walls maintained low temperature. The range parameters considered in analysis as follows: angle varied from 0^o to 135^o, ratio heating element width 20 80% reference length, Hartmann number 0 100, Rayleigh 10^3 10^6. Liquid gallium Prandtl (0.02) used working fluid properties except density. obtained results indicated that streamlines affected strongly especially small (@F=0^o) (Ra=10^3-10^6). effect decreases an increase (@F>0^o) large number. will cause temperature lines become symmetrical shape (Ra=10^5-10^6). also explain very little (@e=0.4) (Ra=10^4), but this (@e=0.8) (Ra=10^6). Nusselt increases first (0^[email protected][email protected]@?45^o), then slightly (45^o<@[email protected]?90^o), finally (90^o<@[email protected]?135^o). An empirical correlation developed versus numbers, angle. decrease Furthermore, four mathematical correlations extracted presented, which can be accurately predict average terms angle, Hartmann, numbers.