Title page for ETD etd-01132004-114420

Type of Document Master's Thesis
Author Agarwal, Peeyush
Author's Email Address PAGARW1@LSU.EDU
URN etd-01132004-114420
Title Heat/Mass Transfer in Smooth and Ribbed Rectangular Serpentine Passages of Different Aspect Ratio's and Orientation
Degree Master of Science in Mechanical Engineering (M.S.M.E.)
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Sumanta Acharya Committee Chair
D.E. Nikitopoulos Committee Member
Ram Devireddy Committee Member
  • naphthalene sublimation technique
Date of Defense 2003-10-06
Availability unrestricted
An experimental study of heat/mass transfer in rectangular smooth and ribbed serpentine passages with and without rotation in two different aspect ratios (1:4 and 4:1) channel is performed for two different orientations of the test section (90-degree and 45-degree). The Reynolds number is varied in the range of 5,000 to 40,000 and rotation numbers in the range of 0-0.12. Such passages are encountered close to the mid-chord sections or towards the trailing edge of the turbine blade. Two different configurations of the Normal ribs (e/Dh=0.3125, P/e=8 and e/Dh=0.156, P/e=11.2) are placed on the leading and the trailing sides. The experiments are conducted in a rotating two-pass coolant channel facility using the naphthalene sublimation technique. For purposes of comparison, selected measurements are also performed in a 1:1 cross-section. The local mass-transfer data in the fully developed region is averaged to study the effect of the Reynolds and the Rotation numbers. The span-wise mass transfer distributions in the smooth and the ribbed cases are also examined.
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