Accession Number : AD0859927

Title :   A Contribution to the Measurement of Turbulence with the Aid of Hot-Wire Anemometers,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Rehak, V.

Report Date : 20 MAY 1969

Pagination or Media Count : 13

Abstract : A study was made of the measuring technique for Reynolds shear-stresses. The experiments involved the use of the wind tunnel of the Institute of Thermomechanics of the Czechoslovak Academy of Sciences in Prague. The tests were conducted at ground speeds of about 25 m/sec. It was established that in measuring Reynolds shear-stresses with two hot wires the results may be greatly distorted due to dust deposits on the probes and the differences in the sensitivity to velocity fluctuations. It is of importance that the physical properties of the hot wires be identical. (Author)

Descriptors :   *ANEMOMETERS), (*AERODYNAMICS, (*SHEAR STRESSES, MEASUREMENT), REYNOLDS NUMBER, ACCURACY, VELOCITY, SENSITIVITY, WIRE, EAST GERMANY, TURBULENCE.

Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE