A Refined Analysis of a Holographic Interferogram

1967 ◽  
Vol 38 (13) ◽  
pp. 5408-5409 ◽  
Author(s):  
J. H. Holds ◽  
A. E. Fuhs
Keyword(s):  
Holographic Interferogram

Interaction of Liquid Droplets With Planar Shock Waves

1990 ◽  
Vol 112 (4) ◽  
pp. 481-486 ◽  
Author(s):  
T. Yoshida ◽  
K. Takayama
Keyword(s):  
Mach Number ◽  
Shock Waves ◽  
Reynolds Numbers ◽  
Liquid Droplets ◽  
Double Exposure ◽  
Cross Sectional ◽  
Planar Shock ◽  
Shock Mach Number ◽  
Holographic Interferogram ◽  
Double Exposure Holographic Interferometry

Interactions and breakup processes of 1.50-mm-diameter ethyl alcohol droplets and 5.14-mm-diameter water bubbles with planar shock waves were observed using double-exposure holographic interferometry. Experiments were conducted in a 60 mm × 150 mm cross-sectional shock tube for shock Mach number 1.56 in air. The Weber numbers of droplets and liquid bubbles were 5.6 × 103 and 2.9 × 103, respectively, while the corresonding Reynolds numbers were 4.2 × 10 and 1.5 × 105. It is shown that the resulting holographic interferogram can eliminate the effect of the mists produced by the breakup of the droplets and clearly show the structure of a disintegrating droplet and its wake. This observation was impossible by conventional optical flow visualization. It is demonstrated that the time variation of the diameter of a breaking droplet measured by conventional optical techniques has been overestimated by up to 35 percent.

Holographic Interferogram Analysis from a Single View

1974 ◽  
Vol 13 (3) ◽  
pp. 630 ◽  
Author(s):  
Bruce D. Hansche ◽  
Carl G. Murphy
Keyword(s):  
Single View ◽  
Holographic Interferogram
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