Rayleigh-Taylor instability in compressible fluids. Final technical report, 1 October 1990--30 September 1991
- California Inst. of Tech., Pasadena, CA (United States). Graduate Aeronautical Labs.
We report here the results of a new densitometry technique, based on the differential X-ray aborption by the two gases at the interface. The interface is imaged on X-ray negative plates, which are subsequently digitized and analyzed with a newly developed self-calibrating procedure. From the distribution of film density, the density field of the heavy gas (viz. xenon) throughout the test section is reconstructed. The shape of the interface, average density profiles, and density contours are extracted from such density distribution. To our knowledge these are the first measurements of this kind. The technique is demonstrated in a vertical shock tube set up so that a shock of strength M{sub s} = 1.3 interacts with an initially thick ({approximately}1 cm) air/xenon interface with a quasi-sinusoidal shape.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States); California Inst. of Tech., Pasadena, CA (United States). Graduate Aeronautical Labs.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10124555
- Report Number(s):
- UCRL-CR-105618-90/91; ON: DE92008578
- Resource Relation:
- Other Information: PBD: 31 Oct 1991
- Country of Publication:
- United States
- Language:
- English
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