论文信息 - DESIGN NOTE: A modified schlieren technique for micro flow visualization

DESIGN NOTE: A modified schlieren technique for micro flow visualization

A modified schlieren technique has been developed for studies of supersonic flow through a micronozzle setup. After taking the ratio between reference and schlieren images, the noise has been reduced and the contrast in the image has been improved. The shock wave pattern in the micronozzle has been clearly identified at the total pressure of 41.4 kPa.

John P. Sullivan | Chihyung Huang | James W. Gregor

[1] D. Walrath,et al. Micro-Schlieren Characterization of a High Momentum Micro-Fluidic Actuator , 2002 .

[2] James W. Gregory,et al. Flow visualization and pressure measurement in micronozzles , 2007, Journal of Vision.

[3] G. Settles. Schlieren and shadowgraph techniques , 2001 .

[4] Terry R. Salyer,et al. Noise reduction properties of a multiple-source schlieren system , 1993 .

[5] Ahsan Choudhuri,et al. Effects of geometry and ambient pressure on micronozzle flow , 2001 .

[6] F. Devia,et al. Evaluation of thermal field in buoyancy-induced flows by a Schlieren method , 1993 .