Convective heat transfer in a curved annular sector duct
Conference
Yang, G, Ebadian, MA. (1992). Convective heat transfer in a curved annular sector duct
. American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD, 201 51-61.
Yang, G, Ebadian, MA. (1992). Convective heat transfer in a curved annular sector duct
. American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD, 201 51-61.
A numerical analysis of heat transfer behavior in a curved annular sector duct is presented in this paper. The energy equation for hydrodynamically and thermally fully developed laminar flow has been developed. A uniform axial heat flux and peripherally constant wall temperature boundary condition are applied in this study. The effects of three major parameters, the axial pressure gradient, the dimensionless radius ratio, and the dimensionless curvature on the heat transfer process are systematically studied. The results indicate that completely different temperature distribution patterns are evident among the top segment, the side segment, the bottom segment ducts. The Nusselt number will be significantly increased as the pressure gradient increases. Furthermore, increase of the dimensionless curvature will also enhance heat transfer due to a strong secondary flow. Finally, the results indicate that heat transfer is improved dramatically as the duct radius ratio decreases, especially when the duct radius ratio is smaller than 0.6.
