Abstract
The William B Morgan Large Cavitation Channel (LCC) is a large variable-pressure closed-loop water tunnel that has been operated by the US Navy in Memphis, TN, USA, since 1991. This facility is well designed for a wide variety of hydrodynamic and hydroacoustic tests. Its overall size and capabilities allow test-model Reynolds numbers to approach, or even achieve, those of full-scale air- or water-borne transportation systems. This paper describes the facility along with some novel implementations of measurement techniques that have been successfully utilized there. In addition, highlights are presented from past test programmes involving (i) cavitation, (ii) near-zero pressure-gradient turbulent boundary layers, (iii) the near-wake flow characteristics of a two-dimensional hydrofoil and (iv) a full-scale research torpedo.
Highlights
The William B Morgan Large Cavitation Channel (LCC) is a large variable-pressure closed-loop water tunnel that has been operated by the US Navy in Memphis, TN, USA, since 1991
This paper describes the William B Morgan Large Cavitation Channel (LCC) and some of the attendant instrumentation that has been used there for high Reynolds number tests
It is intended to concisely convey the wide range of experimentation that is possible at high Reynolds numbers in the LCC
Summary
This paper describes the William B Morgan Large Cavitation Channel (LCC) and some of the attendant instrumentation that has been used there for high Reynolds number tests. It was designed to be sufficiently large so that Reynolds number scaling of model test results to full-scale devices or prototypes would either be unnecessary or at most would involve an extrapolation of only one order of magnitude or so. Traditional and modern flow diagnostics have been used in the LCC This includes both single- and multi-component fluid velocity measurements via laser Doppler velocimetry (LDV) and particle-imaging velocimetry (PIV). Sample results from several of these studies are presented, while the final section describes future uses and possible upgrades for higher speed testing in the LCC
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