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Transport Phenomena in Thermal Engineering. Volume 2

ISBN:
1-56700-015-0 (Print)

DEVELOPMENT OF A GENERAL PURPOSE FULL-FIELD VELOCITY MEASUREMENT SYSTEM BASED ON PARTICLE-IMAGING VELOCIMETRY

Toshio Kobayashi
The 2nd Department, Institute of Industrial Science, University of Tokyo 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan

Tetsuo Saga
Institute of Industrial Science, The University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo 106, JAPAN

Norihisa Tsuda
Kimitsu Works, Nippon Steel Corporation, 1 Kimitsu, Kimitsu-shi, Chiba 299-11, JAPAN

Deoghee Doh
Institute of Industrial Science, The University of Tokyo; Division of Mechanical & Information Engineering, Korea Maritime University 1 Dongsam-dong, Yeongdo-gu, Busan, 606-791, Korea

Abstract

A general purpose full-field velocity measurement system based on the Particle-Imaging velocimetry (PIV) has been developed. This system is connected with the classical flow visualization technique (tracer injection method) and sophisticated image processing technique. The measurement system consists of a laser light source, a TV camera, a laser optical disk recorder and an image processor interfaced with a 16 bit micro-computer. The tracer particles injected into the liquid flow are illuminated using the pulsed laser light sheet and are tracked by the TV camera. The images recorded on the laser disk are later replayed and sent to the image processor, and instantaneous velocity vectors of whole flow field is automatically calculated. To explore the ability and usefulness of this system the complex flow field in a casting model have been investigated.