The Turbulent Boundary Layer with Foreign Gas Injection
Author | : R. J. Baker |
Publisher | : |
Total Pages | : 42 |
Release | : 1972 |
Genre | : |
ISBN | : |
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Author | : R. J. Baker |
Publisher | : |
Total Pages | : 42 |
Release | : 1972 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 38 |
Release | : 1973 |
Genre | : |
ISBN | : |
Author | : D. I. A. Dunbar |
Publisher | : |
Total Pages | : 75 |
Release | : 1972 |
Genre | : Turbulent boundary layer |
ISBN | : |
Author | : R. J. Baker |
Publisher | : |
Total Pages | : 340 |
Release | : 1971 |
Genre | : |
ISBN | : |
Author | : Nathan Ness |
Publisher | : |
Total Pages | : 38 |
Release | : 1960 |
Genre | : Gas dynamics |
ISBN | : |
Author | : Thomas Hadwick Smith |
Publisher | : |
Total Pages | : 508 |
Release | : 1969 |
Genre | : Anemometer |
ISBN | : |
Author | : Raymond Buckwalter Landis |
Publisher | : |
Total Pages | : 524 |
Release | : 1971 |
Genre | : Boundary layer |
ISBN | : |
Author | : Morris W. Rubesin |
Publisher | : |
Total Pages | : 43 |
Release | : 1958 |
Genre | : Gas flow |
ISBN | : |
An exploratory analysis has been developed for the case of distributed injection of a foreign gas into a turbulent boundary layer in air on a flat plate. The work is divided into three parts: a derivation of the basic turbulent boundary-layer equations for a binary gas system; a derivation of modified Reynolds analogies between momentum, mass, and heat transfer for a binary gas system; and an evaluation of the effect of foreign gas injection on the skin friction and heat transfer of a nearly isothermal boundary layer by means of mixing length theory. Numerical results are presented for the injection of hydrogen and helium into the boundary layer for a temperature of 500 degrees R. It has been found that the injection of a given mass of light gas is much more effective than the same mass of air in reducing skin friction and heat transfer on the flat plate. The same reductions are generally achieved with about 20 percent as much hydrogen and about 40 percent as much helium as in the case for air.
Author | : Harvey Martin Gurien |
Publisher | : |
Total Pages | : 6 |
Release | : 1970 |
Genre | : |
ISBN | : |
Author | : Robert A. Beddini |
Publisher | : |
Total Pages | : 25 |
Release | : 1976 |
Genre | : |
ISBN | : |
A second-order closure technique for the compressible turbulent boundary layer equations has been developed. The technique is employed in the calculation of boundary layers with surface injection of similar and foreign gases. Theoretical results for M approximately 3 and several air injection rates provide favorable comparison with experimental data. Theoretical mean velocity and mass fraction profiles for a propane injected oxygen boundary layer are also presented. The additional ability of the technique to accommodate finite rate chemical reactions in a multi-species system was investigated. Preliminary results are provided for the rapidly developing region of flow downstream of an ignition and turbulence source. Application of the closure technique to the calculation of a variety of reacting shear flows is currently being performed at ARAP.