Accession Number:

AD0607474

Title:

THE WALL-JET IN A LONGITUDINAL PRESSURE GRADIENT.

Descriptive Note:

Annual rept.,

Corporate Author:

SYRACUSE UNIV RESEARCH INST N Y

Personal Author(s):

• Erian,F.
• eskinazi,S.

Report Date:

1964-10-31

Pagination or Media Count:

53.0

Abstract:

The objectives of the work are two fold. Firstly, its studies the effect of a longitudinal pressure gradient on the nature of the shear stress distribution, as well as the mechanism of energy-production. Secondly, it explores to find out if the existence of pressure gradients increased, in the flow field, the size of the negative energy-production region. The flow pattern used in conducting the present experiments was composed of a half-jet blowing out of a narrow vertical slot of large aspect ratio. The jet was bounded by a smooth rigid flat wall on one side, and mixing with a slower stream of air on the free side. A convergent then divergent passage was provided for the entire flow by placing a half symmetrical Joukowski airfoil section on the free stream side of the wind tunnel. This airfoil section not only created a longitudinal variation in the free stream velocity, but also a pressure gradient which changed sign from negative in the convergent part of the passage to positive in the divergent part.

Descriptors:

• *JET FLOW
• FLUID DYNAMICS
• PRESSURE
• TURBULENCE
• VELOCITY
• STATICS
• ENERGY
• WIND TUNNELS
• AIRFOILS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE