Accession Number : ADA136239

Title :   Experimental Investigation of Turbulent Heat Transfer in Straight and Curved Rectangular Ducts.

Descriptive Note : Master's thesis,


Personal Author(s) : Daughety,S F

PDF Url : ADA136239

Report Date : Sep 1983

Pagination or Media Count : 74

Abstract : An experimental investigation was conducted to examine the convective heat transfer in straight and curved ducts of rectangular cross-section. The experimental configuration was modeled as infinite parallel plates with one wall at a constant temperature and the opposite wall adiabatic. The experiments were conducted at steady state for turbulent flow. Average Nusselt numbers were used to compare the heat transfer characteristics of the straight and curved sections. The development of Taylor-Gortler vortices in the curved section was shown to enhance the heat transfer rate in the curved section as compared to that of the straight section by approximately 15 to 20 percent. Improved heat exchanger designs and improved cooling of turbine blades are two disciplines that could benefit from a better understanding of the effects of curvature on the rate of heat transfer. (Author)

Descriptors :   *Heat transfer, *Turbulent flow, *Vortices, Walls, Laminar flow, Ducts, Rectangular bodies, Aspect ratio, Theses

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE