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| Author | : Larry L. Lynes |
| Publisher | : |
| Total Pages | : 148 |
| Release | : 1969 |
| Genre | : Air flow |
| ISBN | : |
| Author | : Shimer Zane Pinckney |
| Publisher | : |
| Total Pages | : 68 |
| Release | : 1971 |
| Genre | : Boundary layer |
| ISBN | : |
| Author | : J. Schneider |
| Publisher | : |
| Total Pages | : 106 |
| Release | : 1972 |
| Genre | : Boundary layer |
| ISBN | : |
A computer program is described capable of determining the properties of a compressible turbulent boundary layer with pressure gradient and heat transfer. The program treats the two-dimensional problem assuming perfect gas and Crocco integral energy solution. A compressibility transformation is applied to the equation for the conservation of mass and momentum, which relates this flow to a low speed constant property flow with simultaneous mass transfer and pressure gradient. The resulting system of describing equations consists of eight ordinary differential equations which are solved numerically. For Part 1, see N72-12226; for Part 2, see N72-15264.
| Author | : |
| Publisher | : |
| Total Pages | : 580 |
| Release | : 1969 |
| Genre | : Compressibility |
| ISBN | : |
| Author | : C. Economos |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1971 |
| Genre | : |
| ISBN | : |
| Author | : Neal Tetervin |
| Publisher | : |
| Total Pages | : 96 |
| Release | : 1967 |
| Genre | : Enthalpy |
| ISBN | : |
The method predicts that a positive pressure gradient increases and a negative pressure gradient decreases the ratio of Stanton number to friction coefficient. The Crocco relation between the velocity and total enthalpy for a non-adiabatic surface and zero pressure gradient is generalized to non-zero pressure gradient. The relation between the velocity and the total enthalpy varies markedly from the flat plate Crocco relation as the pressure gradient departs from zero. The magnitude of the variation depends on the velocity profile shape parameter. (Author).
| Author | : |
| Publisher | : |
| Total Pages | : 52 |
| Release | : 1972 |
| Genre | : |
| ISBN | : |
| Author | : Eli Reshotko |
| Publisher | : |
| Total Pages | : 34 |
| Release | : 1957 |
| Genre | : Compressibility |
| ISBN | : |
The method, as applied to insulated surfaces, is quite well founded but, for noninsulated isothermal surfaces, depends on a number of speculative assumptions. These assumptions are qualitatively proper, and it is hoped that they will yield reasonable quantitative results. The detailed application of the method for practical calculations is described.
| Author | : |
| Publisher | : |
| Total Pages | : 110 |
| Release | : 1972 |
| Genre | : |
| ISBN | : |
| Author | : David L. Brott |
| Publisher | : |
| Total Pages | : 104 |
| Release | : 1969 |
| Genre | : Compressibility |
| ISBN | : |
The paper describes the results of a detailed experimental investigation of a two-dimensional turbulent boundary layer in a favorable pressure gradient where the free-stream Mach number varied from 3.8 to 4.6 and the ratio of wall to adiabatic-wall temperature has a nominal value of 0.82. Detailed profile measurements were made with pressure and temperature probes; skin friction was measured directly with a shear balance. The velocity- and temperature-profile results were compared with zero pressure gradient and incompressible results. The skin-friction data were correlated with momentum-thickness Reynolds number and pressure-gradient parameter. (Author).
