Accession Number : AD0668112

Title :   INTERFERENCE MEASUREMENTS MASS TRANSFER IN A TURBULENT BOUNDARY LAYER OF A PERMEABLE SURFACE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Fayngold,L. A.

Report Date : 28 JUL 1967

Pagination or Media Count : 14

Abstract : The object of the work was the interferometric measurement of the concentration field of an admixture (carbon dioxide gas) blown into a turbulent boundary layer through a permeable surface under isothermal conditions. The experimental apparatus consisted of an open type aerodynamic tube with a closed working column 0.8 meters long and with a cross section 190 x 360 mm. The porous plate being investigated was placed in the lower wall. The flow velocity through the plate was varied smoothly up to 40 meters/sec. The porous plate was made of stainless steel and had dimensions of 0.28 x 0.35 x 0.005 meters. Photography of the radiation process was done with a 'Zenith-S' camera directly on the apparatus. A formula is derived for the direct calculation of the profiles of the relative carbon dioxide concentrations in the boundary layer with blowing of carbon dioxide gas. (Author)

Descriptors :   (*TURBULENT BOUNDARY LAYER, FLOW FIELDS), INTERFEROMETERS, PERMEABILITY, POROUS MATERIALS, SURFACE PROPERTIES, GAS FLOW, MATHEMATICAL ANALYSIS, USSR, MASS TRANSFER, CARBON DIOXIDE, IMPURITIES

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE