Turbulent heat transfer in a trapezoidal channel with transverse and v-shaped ribs on two opposite walls
This study investigates the turbulent heat transfer and friction in a trapezoidal
channel with opposite walls roughened with transverse and v-shaped ribs. The
roughened channel depicts the internal cooling passage of an aerofoil near the trailing
edge. The various configurations investigated for this study are smooth channel, channel
with 90° transverse ribs and channel with v-shaped ribs angled at 45°. The pitch-toheight
ratio (P/e), rib height-to-hydraulic diameter ratio (e/Dh) and the aspect ratio (W/e)
were maintained at 12, 0.1906 and 1, respectively. The configuration was tested for
Reynolds number ranging from 7,000 to 40,000. The 45° rib was found to produce the
maximum heat transfer and minimum pressure loss.
Advisor:Lau, Sai C.; Anand, N. K.; Hassan, Y. A.
School:Texas A&M University
School Location:USA - Texas
Source Type:Master's Thesis
Keywords:turbulent heat transfer trapezoidal channel
Date of Publication:12/01/2005