EXPERIMENTAL STUDY OF THE TURBULENT MIXING OF SUBSONIC AXISYMMETRIC GAS STREAMS
Final rept. Jul 1966-Oct 1967
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
Pagination or Media Count:
An experimental study of the turbelent mixing of subsonic axisymmetric gas streams was conducted. Hydrogen-air and air-air mixing systems were studied, and the velocity ratio jet velocityouter stream velocity was varied from 2.4 to 6.3. Special emphasis is placed on 1 the centerline decay and radial profile shapes of composition, velocity, and total enthalpy and 2 the relationships between the turbulent transport of mass, momentum, and energy. The major conclusions drawn for this particular set of conditions are 1 for the hydrogen-air system the centerline decay decreases with increasing velocity ratio, 2 profile similarity of composition, velocity, and total enthalpy is a valid assumption, 3 there is a definite relationship between the transport of momentum and energy which is not compatible with a constant Prandtl number, and 4 unity Lewis number is a valid assumption. The experimental data obtained are tabulated for the benefit of other investigators.
- Fluid Mechanics