Laser Doppler Velocimetry Techniques in the Large Cavitation Channel

Abstract

Recent demands for making velocity measurements on complex models in the Large Cavitation Channel have required the use of innovative techniques in the application of Laser Doppler Velocimetry (LDV). Several typical models, from bodies of revolution to fully-appended surface ships, are shown to demonstrate various effective techniques used in obtaining LDV measurements. Furthermore, LDV measurements of test section and diffuser flows obtained in the absence of a model are compared favorable with wind tunnel model data.