Development of the Seeding System Used for Laser Velocimeter Surveys of the NASALow-Speed Centrifugal Compressor Flow Field

摘要

An atomizer-based system for distributing high-volume rates of seed material wasdeveloped to support laser velocimeter investigations of the NASA Low-Speed Centrifugal Compressor flow field. The seeding system and the major concerns that were addressed during its development are described. Of primary importance were that the seed material be dispersed as single particles and that the liquid carrier used be completely evaporated before entering the compressor.