The salt velocity technique for measuring coolant flow through a SNAP 8 tri-cusp channel was studied and developed. The parameters important in obtaining reproducible data were investigated and a test procedure, which yields dath of good precision, was developed. Dath were taken on a tri-cusp channel with flush circular electrodes (0.125 inch O.D.) as well as on a tri-cusp channel with parallel plate electrodes (0.006 inches thick, 0.250 inches long), which were situated 0.050 inches apart and protruded 0.040 inches into the stream. The data are presented as the ratio of U/sub exp//U/sub avg/ where U/sub avg/ is calculated by …
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Publisher Info:
Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
Place of Publication:
Canoga Park, California
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The salt velocity technique for measuring coolant flow through a SNAP 8 tri-cusp channel was studied and developed. The parameters important in obtaining reproducible data were investigated and a test procedure, which yields dath of good precision, was developed. Dath were taken on a tri-cusp channel with flush circular electrodes (0.125 inch O.D.) as well as on a tri-cusp channel with parallel plate electrodes (0.006 inches thick, 0.250 inches long), which were situated 0.050 inches apart and protruded 0.040 inches into the stream. The data are presented as the ratio of U/sub exp//U/sub avg/ where U/sub avg/ is calculated by means of a flowrator and channel geometry. It was found that in the tri-cusp channel for a range of Reynolds Numbers of 11,000 to 25,000, a radial velocity profile could not be sensed. The peripheral velocity profile over the central baif of the cbannel appeared to be flat and relatively.independent of the Reynolds Number. The data were compared with similar work of Palmer and Swanson in a qualitative and quantitative manner. Reasons are given for using a single calibration factor in the hydraulic model testing of S8DS core. While some slight modifications should be made to further improve the accuracy of the salt velocity procedure, the most important phases of the development and perfection of the procedures were accomplished successfully. (auth)
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