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Livingood, J. N. B.

Publications and source records attributed to Livingood, J. N. B..

17 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1973

Heat transfer characteristics of a single circular air jet impinging on a concave hemispherical shell

An experimental study was made of the local and average heat-transfer characteristics of a single turbulent air jet impinging on the concave surface of a hemisphere. Correlations were developed for expressing the effects of a number of dimensionless variables on the local and average Nusselt numbers. Results of the present study are compared with those from a similar study concerning a concave surface of a semicylindrical shell.

Livingood, J. N. B.↗
NASA NTRS1973

Impingement heat transfer from turbulent air jets to flat plates: A literature survey

Heat transfer characteristics of single and multiple turbulent air jets impinging on flat surfaces have been studied by many investigators. Results of many of these studies are summarized. Suggested correlations for use in the design of cooled turbine blades are noted, and areas where further research would be advisable are identified.

Livingood, J. N. B.↗
NASA NTRS1973

Engine investigation of an impingement-cooled turbine rotor blade

Experimentally determined heat transfer characteristics of an impingement-cooled turbine rotor blade are reported. The test results are compared with those obtained for three convection-cooled turbine blades tested in the same facility in addition to impingement correlations found in literature.

Gauntner, J. W.↗
NASA NTRS1973

Local heat-transfer characteristics of a row of circular air jets impinging on a concave semicylindrical surface

An experimental study was made of the local heat-transfer characteristics of air jets impinging on the concave side of a right circular semicylinder. A correlation was developed for expressing individual and combined effects of a number of dimensionless variables on the normalized Nusselt number distributions. Results of the present study are in good agreement with those of other investigators.

Livingood, J. N. B.↗
NASA NTRS1972

Average heat-transfer characteristics of a row of circular air jets impinging on a concave surface

A study of the average heat-transfer characteristics of air jets impinging on the concave side of a right-circular semicylinder is reported. Results from existing correlating are compared with each other and with experimental heat-transfer data for a row of circular jets. Two correlations available in the literature are recommended for use in designing cooled turbine vanes and blades.

Livingood, J. N. B.↗
NASA NTRS1972

Comparison of temperature data from a four-vane static cascade and a research gas turbine engine for a chordwise-finned, impingement- and film-cooled vane

Experimental heat-transfer data obtained for a chordwise-finned, impingement- and film-cooled turbine vane tested in a four-vane static cascade to a gas temperature and a gas pressure of 2250 F and 80 psia, respectively, are presented. Average and local vane temperatures are correlated and compared with correlations of temperature data obtained from tests of the same vane in a modified J-75 turbojet engine. The measured vane temperatures obtained from these tests in the two test stands are also compared with analytically determined temperatures.

Gladden, H. J.↗
NASA NTRS1971

Analysis of heat-transfer tests of an impingement-convection- and film-cooled vane in a cascade

Experimental flow and heat transfer data obtained for an air-cooled turbine vane tested in a static cascade at gas temperatures and pressures to 1644 K (2500 F) and 31 N/cm2 (45 psia), respectively, are presented. Average and local vane temperatures were correlated in several ways. Calculated and measured coolant flows and vane temperatures are compared. Potential allowable increases in gas temperature are also discussed.

Gladden, H. J.↗
NASA NTRS1970

Flow characteristics of an air jet impinging on a flat surface

Survey develops adequate heat transfer correlations for design use. Flow characteristics studies include - potential core length, velocity and pressure distribution through the jet, and spread of jet and velocity decay along jet axis.

Gauntner, J. W.↗