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Transport Phenomena in Thermal Engineering. Volume 2

ISBN:
1-56700-015-0 (Print)

RESULTS OF A SINGLE PHASE VENTURI FLOW COOLING EXPERIMENT

Rengasamy Ponnappan
Universal Energy Systems, Inc., Dayton, OH 45432 USA

John E. Leland
WL/POOS-3, Wright Laboratory, Wright-Patterson Air Force Base, OH 45433, USA

Won Soon Chang
Wright Laboratory, Wright-Patterson At Force Base, OH 45433-6563, USA

Jerry E. Beam
Aerospace Power Division, Wright-Patterson Air Force Base, OH 45433

Abstract

A new approach called "venturi flow cooling concept" is described. Single phase fluid flow in a circular tube is forced through a short annular throat section creating high velocity in order to enhance wall heat transfer. Experiments were performed in a 3.33 cm dia. test section with water. Results show a three to four-fold increase in average wall-to-fluid heat transfer coefficient for the venturi flow compared to the circular flow. This concept has a potential application in cooling solid state switching devices such as MCTs which have power dissipation of the order of 200 W/cm2.