Abstract
Transient pressure drops across abrupt area changes are to be determined in a series of blowdown experiments. These tests are to be conducted, with Freon 113 as the test fluid, in a well instrumented apparatus. Procurement of the additional instrumentation required and the needed data acquisition equipment is under way. Prior to receipt of these items, preliminary blowdown runs will be conducted using the available instrumentation. Revision of the transient loop for performance of these tests has been completed. Checkout runs are under way. The void sensor devices to be used in the fully instrumented blowdown runs are to be calibrated under conditions close to operating. The. U.C. boiling freon loop is being modified for this purpose. The computational models for analysis of the transient pressure drop at abrupt area changes have been chosen. A preliminary analysis has been performed to ensure that it will be possible to distinguish between the proposed models.
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