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Proceedings Paper

Fluid mechanic aspects for rotating disk generators
Author(s): Wolfgang O. Schall; Ina Plock; Karin M. Gruenewald; Juergen Handke
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Paper Abstract

The motion and distribution of a fluid in a rotating disk generator as used in chemical oxygen-iodine lasers for the generation of singlet delta oxygen has been investigated experimentally. A transparent mock-up with 3 disks has been built and glycerine solutions of different concentrations have been used as the liquid. This should simulate the various viscosities that the basic hydrogen peroxide, the actual working fluid in a singlet oxygen generator, can assume. Other important parameters in the investigation with a significant influence on the results were the rotation rate of the disks and the filling level of the liquid bath. Depending on these parameters substantial amounts of liquid are trapped between the disks and reduce the accessible disk area for the actual gas-liquid reaction in the production of oxygen. Simultaneously, the gas flow velocity through the disks can locally increase by a factor of 6.5. A strong vortex has been found in the liquid bath of a batch type generator which limits the exchange of reacted liquid with the bulk. Finally, an estimate of the thickness of the liquid film on the disk surface could be derived.

Paper Details

Date Published: 22 December 1998
PDF: 8 pages
Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); doi: 10.1117/12.334441
Show Author Affiliations
Wolfgang O. Schall, DLR Institut fuer Technische Physik (Germany)
Ina Plock, DLR Institut fuer Technische Physik (Germany)
Karin M. Gruenewald, DLR Institut fuer Technische Physik (Germany)
Juergen Handke, DLR Institut fuer Technische Physik (Germany)


Published in SPIE Proceedings Vol. 3574:
XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Anatoly S. Boreisho; Gennady A. Baranov, Editor(s)

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