Study of initial shock wave in exhausted flow field by use of a Laser Moire Deflectometry instrument
✍ Scribed by Qiang Xu; Jun Li
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 207 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0030-3992
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✦ Synopsis
The initial show wave is a non-stationary phenomenon in the initial stage of an exhausted ¯ow ®eld. Its movement characteristic and development process cannot be mastered accurately with the use of contact-type measurement methods, such as pressure and velocity measurements. An experimental study of the shock wave ®eld by use of a Laser Moire De¯ectometry instrument is introduced in this paper. The instrument has a large caliber, high sensitivity and high precision. A serial photograph of shock wave ®eld is also presented. The formation mechanism and development trend of the initial shock wave can be drawn from analysis of ¯ow ®eld display photographs.