Accession Number:

AD0645214

Title:

AN EXPERIMENTAL INVESTIGATION OF THE VELOCITY AND TEMPERATURE PROFILES IN THE BOUNDARY LAYER ABOVE AN UNSTABLE EVAPORATING FILM OF LIQUID UNDER THE INFLUENCE OF A MOVING STREAM OF HOT GAS

Descriptive Note:

Technical memo.

Corporate Author:

PURDUE UNIV LAFAYETTE IN JET PROPULSION CENTER

Personal Author(s):

• Crabtree, Donald L.
• Warner, C. F.

Report Date:

1966-09-01

Pagination or Media Count:

226.0

Abstract:

The thesis presents the results of measurements above an unstable evaporating film of water. Entrained liquid as droplets was present in the boundary layer. The measurements were made at one liquid flow rate at the following gas flow conditions Total temperature - 980R, Total pressure - 250 psia, Gas velocity - 100 ftsec, Axial static pressure gradient - less than 0.02 psift. Photographs taken at 3 microsec were obtained of the interfacial structure of the liquid film. The temperature of the film was also measured. The experiments were conducted in a tunnel with a rectangular cross section 1 1 2 in. x 4 in. and 22 in. long, onto one side of which was injected the liquid as a film. Measurements in the boundary layer were carried out for both wet and dry walls.

Descriptors:

• *BOUNDARY LAYER
• *FILM COOLING
• *ROCKET ENGINES
• AERODYNAMIC CHARACTERISTICS
• DROPS
• EVAPORATION
• GAS FLOW
• STABILITY
• TEMPERATURE
• VELOCITY
• WATER

Subject Categories:

• Physical Chemistry
• Air Conditioning, Heating, Lighting and Ventilating
• Thermodynamics
• Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE