Author: Shankar Lal
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 180

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Book Description

Author: Donald Charles Baxter
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 620

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Book Description

Author: George M. Low
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 38

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Book Description
A solution of the equations of the compressible laminar boundary layer including the effects of transpiration cooling is presented. The analysis applies to the flow over an isothermal porous plate with a velocity of fluid injection proportional to the reciprocal of the square root of the distance from the leading edge.

Author: Ernst Rudolf Georg Eckert
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 118

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Book Description

Author: L. M. Albacete
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 68

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Book Description
The effects of the injection of a light, medium, and heavy gas on the skin friction and heat transfer characteristics of the laminar boundary layer flow over a flat plate were investigated. This was done by a numerical solution of the governing differential equations for injection rate parameters of -0, -0. 1, -0.2; Mach numers from 0 to 3; and wall-to-stream temperature ratios of 0.25, 0.50, and 1.00. The results show that the selection of discrete injection systems must represent a favorable compromise between conflicting factors (such as small molecular weight and large molecular diameters) which influence the amount of reduction in skin friction and heat transfer desired.

Author: Clarence B. Cohen
Publisher:
ISBN:
Category : Laminar boundary layer
Languages : en
Pages : 43

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Book Description
WIth the resulting relations, methods are derived for the calculation of the tw-dimensional and axially symmetric laminar boundary layer with an arbitrary free-stream velocity distribution, Mach number, and surface temperature.

Author: Simon Ostrach
Publisher:
ISBN:
Category : Laminar boundary layer
Languages : en
Pages : 26

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Book Description
The laminar compressible boundary layer and heat transfer over an isothermal semi-infinite flat plate moving with a time-dependent velocity has been analyzed. First-order deviations from the quasi-steady velocity and temperature profiles and boundary-layer characteristics have been computed. For a plate oscillating about a steady velocity, it is shown that the maxima of skin-friction coefficient and local heat-transfer rate are out of phase with the phase velocity; the skin friction leads by angles not exceeding 45 degrees for permissible values of the frequency parameter, whereas the heat transfer is almost in phase with the plate velocity for very small Mach number but depends significantly on the Mach number, plate to stream temperature ratio, and frequency for higher-speed flows.

Author: Julius E. Harris
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 92

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Book Description
A numerical method for solving the equations for laminar, transitional, and turbulent compressible boundary layers for either planar or axisymmetric flows is presented. The fully developed turbulent region is treated by replacing the Reynolds stress terms with an eddy viscosity model. The mean properties of the transitional boundary layer are calculated by multiplying the eddy viscosity by an intermittency function based on the statistical production and growth of the turbulent spots. A specifiable turbulent Prandtl number relates the turbulent flux of heat to the eddy viscosity. A three-point implicit finite-difference scheme is used to solve the system of equations. The momentum and energy equations are solved simultaneously without iteration. Numerous test cases are compared with experimental data for supersonic and hypersonic flows; these cases include flows with both favorable and mildly unfavorable pressure gradient histories, mass flux at the wall, and traverse curvature.

Author: Stanford University. Division of Engineering Mechanics
Publisher:
ISBN:
Category :
Languages : en
Pages : 284

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Book Description

Author: Tuncer Cebeci
Publisher: Springer Science & Business Media
ISBN: 1461239184
Category : Science
Languages : en
Pages : 497

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Book Description
From the reviews: "The book has a broad and general coverage of both the mathematics and the numerical methods well suited for graduate students." Applied Mechanics Reviews #1 "This is a very well written book. The topics are developed with separate headings making the matter easily understandable. Computer programs are also included for many problems together with a separate chapter dealing with the application of computer programs to heat transfer problems. This enhances the utility of the book." Zentralblatt für Mathematik #1