INVESTIGATION OF FORCED-CONVECTION NUCLEATE BOILING OF WATER FOR NOZZLE COOLING AT VERY HIGH HEAT FLUXES
Technical Report
·
OSTI ID:4776774
The nonuniform axial heat-flux distribution typical of a very high temperature flow nozzle was simulated by resistance heating of variable-wall- thickness lnconel tubes. The coolant water flowed through the constant- insidediameter test sections at flow rates ranging from 0.45 x 10/sup 4/ to 1.27 x 10/sup 4/ lb/(sq ft)(sec)(inlet velocities of 73 to 204 ft/ sec). Results are presented for nonboiling forced convection, nucleate-boiling forced convection at local heat fluxes up to 11,200 Btu/(sq ft)(sec), burnout, and pressure drop. All results are compared with existing correlations. The solution for the temperature distribution in a resistance-heated variable-wall-thickness tube and the appropriate heat-transfer relations are derived. (auth)
- Research Organization:
- National Aeronautics and Space Administration. Lewis Research Center, Cleveland
- NSA Number:
- NSA-16-031795
- OSTI ID:
- 4776774
- Report Number(s):
- NASA-TN-D-1214
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINUM ALLOYS
BURNOUT
CHROMIUM ALLOYS
CONVECTION
COOLING
DISTRIBUTION
ELECTRICITY
ENGINEERING AND EQUIPMENT
FLUID FLOW
FORCED CONVECTION
HEAT TRANSFER
HEATING
HIGH TEMPERATURE
INCONEL ALLOYS
LABORATORY EQUIPMENT
MATHEMATICS
NICKEL ALLOYS
NIOBIUM ALLOYS
NOZZLES
NUCLEATE BOILING
PRESSURE
RESISTORS
SURFACES
THERMODYNAMICS
THICKNESS
TITANIUM ALLOYS
TUBES
VELOCITY
WATER
BURNOUT
CHROMIUM ALLOYS
CONVECTION
COOLING
DISTRIBUTION
ELECTRICITY
ENGINEERING AND EQUIPMENT
FLUID FLOW
FORCED CONVECTION
HEAT TRANSFER
HEATING
HIGH TEMPERATURE
INCONEL ALLOYS
LABORATORY EQUIPMENT
MATHEMATICS
NICKEL ALLOYS
NIOBIUM ALLOYS
NOZZLES
NUCLEATE BOILING
PRESSURE
RESISTORS
SURFACES
THERMODYNAMICS
THICKNESS
TITANIUM ALLOYS
TUBES
VELOCITY
WATER