Experimental studies of oblique shock waves in soap films

Chih-yung Wen; M. C. Weng; M. C. Chuang

Experimental studies of oblique shock waves in soap films

Chih-yung Wen, M. C. Weng, M. C. Chuang

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

In the earlier theoretical and experimental investigations of the analogical hydraulic jump phenomenon in soap films (Wen and Lai, 2002; Wen, Chang-Jian and Chuang, 2002), low-concentration soap films with Marangoni elasticity processes are found to be analogous to compressible gases of specific heat ratio γ=1. This paper presents, the analogous θ-β-M curve in soap films with the help of high-speed flash photography and line scan CCD camera. The oblique shocks attached to the vertex and expansion waves from the base of the wedge are seen. These flow features are qualitatively similar to their counterparts in gases. Quantitatively, the experimental data do not agree with the theoretical θ-β-M curve. The discrepancy is suspected of causing by the surface tension between the test model and the soap film.

Original language	English
Pages (from-to)	325-332
Number of pages	8
Journal	Zhongguo Hangkong Taikong Xuehui Huikan/Transactions of the Aeronautical and Astronautical Society of the Republic of China
Volume	35
Issue number	4
Publication status	Published - 1 Dec 2003
Externally published	Yes

Keywords

θ-β-M curve
Marangoni elasticity processes
Oblique shock wave
Soap film

ASJC Scopus subject areas

Aerospace Engineering

Cite this

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title = "Experimental studies of oblique shock waves in soap films",

abstract = "In the earlier theoretical and experimental investigations of the analogical hydraulic jump phenomenon in soap films (Wen and Lai, 2002; Wen, Chang-Jian and Chuang, 2002), low-concentration soap films with Marangoni elasticity processes are found to be analogous to compressible gases of specific heat ratio γ=1. This paper presents, the analogous θ-β-M curve in soap films with the help of high-speed flash photography and line scan CCD camera. The oblique shocks attached to the vertex and expansion waves from the base of the wedge are seen. These flow features are qualitatively similar to their counterparts in gases. Quantitatively, the experimental data do not agree with the theoretical θ-β-M curve. The discrepancy is suspected of causing by the surface tension between the test model and the soap film.",

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Experimental studies of oblique shock waves in soap films. / Wen, Chih-yung; Weng, M. C.; Chuang, M. C.
In: Zhongguo Hangkong Taikong Xuehui Huikan/Transactions of the Aeronautical and Astronautical Society of the Republic of China, Vol. 35, No. 4, 01.12.2003, p. 325-332.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Experimental studies of oblique shock waves in soap films

AU - Wen, Chih-yung

AU - Weng, M. C.

AU - Chuang, M. C.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - In the earlier theoretical and experimental investigations of the analogical hydraulic jump phenomenon in soap films (Wen and Lai, 2002; Wen, Chang-Jian and Chuang, 2002), low-concentration soap films with Marangoni elasticity processes are found to be analogous to compressible gases of specific heat ratio γ=1. This paper presents, the analogous θ-β-M curve in soap films with the help of high-speed flash photography and line scan CCD camera. The oblique shocks attached to the vertex and expansion waves from the base of the wedge are seen. These flow features are qualitatively similar to their counterparts in gases. Quantitatively, the experimental data do not agree with the theoretical θ-β-M curve. The discrepancy is suspected of causing by the surface tension between the test model and the soap film.

AB - In the earlier theoretical and experimental investigations of the analogical hydraulic jump phenomenon in soap films (Wen and Lai, 2002; Wen, Chang-Jian and Chuang, 2002), low-concentration soap films with Marangoni elasticity processes are found to be analogous to compressible gases of specific heat ratio γ=1. This paper presents, the analogous θ-β-M curve in soap films with the help of high-speed flash photography and line scan CCD camera. The oblique shocks attached to the vertex and expansion waves from the base of the wedge are seen. These flow features are qualitatively similar to their counterparts in gases. Quantitatively, the experimental data do not agree with the theoretical θ-β-M curve. The discrepancy is suspected of causing by the surface tension between the test model and the soap film.

KW - θ-β-M curve

KW - Marangoni elasticity processes

KW - Oblique shock wave

KW - Soap film

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JO - Zhongguo Hangkong Taikong Xuehui Huikan/Transactions of the Aeronautical and Astronautical Society of the Republic of China

JF - Zhongguo Hangkong Taikong Xuehui Huikan/Transactions of the Aeronautical and Astronautical Society of the Republic of China

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ER -

Experimental studies of oblique shock waves in soap films

Abstract

Keywords

ASJC Scopus subject areas

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