Development of a compact x-ray particle image velocimetry for measuring opaque flows.
A compact x-ray particle image velocimetry (PIV) system employing a medical x-ray tube as a light source was developed to measure quantitative velocity field information of opaque flows. The x-ray PIV system consists of a medical x-ray tube, an x-ray charge coupled device camera, a programmable shutter for a pulse-type x ray, and a synchronization device. Through performance tests, the feasibility of the developed x-ray PIV system as a flow measuring device was verified. To check the feasibility of the developed system, we tested a tube flow at two different mean velocities of 1 and 2 mm/s. The x-ray absorption of tracer particles must be quite different from that of working fluid to have a good contrast in x-ray images. All experiments were performed under atmospheric pressure condition. This system is unique and useful for investigating various opaque flows or flows inside opaque conduits.
Lee
Sang Joon
SJ
Department of Mechanical Engineering, Center for Biofluid and Biomimic Research, Pohang University of Science and Technology, San 31, Hyojadong, Nam-gu, Pohang 790-784, Republic of Korea. sjlee@postech.ac.kr
Kim
Guk Bae
GB
Yim
Dae Hyun
DH
Jung
Sung Yong
SY