Simultaneous Measurement of Liquid Surface and Wave Velocities for Falling Liquid Films
We propose a simultaneous measurement of liquid surface and wave velocities for falling liquid films on inclined wall The liquid surface velocity was measured using a non―intrusive technique called as laser tagging method by photochromic dye. The movement of the dye trace tagged by UV laser(λ=355nm)...
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| Format: | Article |
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Japanese Society for Experimental Mechanics (JSEM)
2014
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| Online Access: | http://doi.org/10.11395/jjsem.14.s19 http://doi.org/10.11395/jjsem.14.s19 http://umpir.ump.edu.my/11929/1/ISEM2014.pdf http://umpir.ump.edu.my/11929/6/fkp-2014-nurrina-Simultaneous%20measurement.pdf |
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| Summary: | We propose a simultaneous measurement of liquid surface and wave velocities for falling liquid films on inclined wall The liquid surface velocity was measured using a non―intrusive technique called as laser tagging method by photochromic dye. The movement of the dye trace tagged by UV laser(λ=355nm)was recorded by a high speed video camera and analyzed together with the movement of wave passing over the dye trace. As a result,velocity difference between wave and liquid film before the wave passing over was found to increase with increasing wall inclination angle.
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