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A Simple New Analysis Of Compressible Turbulent Two Dimensional Skin Friction Under Arbitrary Conditions
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Book Synopsis A Simple New Analysis of Compressible Turbulent Two-Dimensional Skin Friction Under Arbitrary Conditions by : F. M. White
Download or read book A Simple New Analysis of Compressible Turbulent Two-Dimensional Skin Friction Under Arbitrary Conditions written by F. M. White and published by . This book was released on 1971 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new approach is proposed for analyzing the compressible turbulent boundary layer with arbitrary pressure gradient. The new theory generalizes an incompressible study to account for variations in wall temperature and free- stream Mach number and temperature. By properly handling the law-of-the-wall in the integration of momentum and continuity across the boundary layer, one may obtain a single ordinary differential equation for skin friction devoid of integral thicknesses and shape factors. The new differential equation is analyzed for various cases. For flat plate flow, a new relation is derived which is accurate for adiabatic flow and reasonably good for flow with heat transfer. For flow with strong adverse and favorable pressure gradients, the new theory is in good agreement with experiment. The new theory also contains an explicitly criterion for boundary layer flow separation.
Book Synopsis Compressible Turbulent Skin Friction on Rough and Rough/wavy Walls in Adiabatic Flow by : Daniel C. Reda
Download or read book Compressible Turbulent Skin Friction on Rough and Rough/wavy Walls in Adiabatic Flow written by Daniel C. Reda and published by . This book was released on 1974 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental program was conducted to investigate effects of roughness, and roughness superimposed on single and/or multiple, shallow, periodic waveforms, on turbulent boundary-layer skin friction and velocity profile, in compressible, adiabatic flow. Test conditions were Mach number = 2.9 and Reynolds number/ft = 2 million to 8 million. The planar models included smooth, sand-grain, machined and molded surface finishes. Direct measurements of surface shear and Pitot/recovery temperature profiles were obtained. (Modified author abstract).
Book Synopsis Rapid Engineering Calculation of Two-Dimensional Turbulent Skin Friction by :
Download or read book Rapid Engineering Calculation of Two-Dimensional Turbulent Skin Friction written by and published by . This book was released on 1972 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report outlines the details for engineering use of White's two- dimensional theory of turbulent skin friction under arbitrary compressible flow conditions. The new method is not only simple but accurate. It is recommended for general use by engineering designers. The method concerns skin friction only. The report presents methods for hand or digital computer computation. Several examples are presented.
Download or read book NASA Technical Note written by and published by . This book was released on 1973 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of Experimental and Theoretical Results for the Compressible Turbulent-boundary-layer Skin Friction with Zero Pressure Gradient by : John B. Peterson
Download or read book A Comparison of Experimental and Theoretical Results for the Compressible Turbulent-boundary-layer Skin Friction with Zero Pressure Gradient written by John B. Peterson and published by . This book was released on 1963 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Engineering Prediction of Turbulent Skin Friction and Heat Transfer in High-speed Flow by : Aubrey M. Cary
Download or read book Engineering Prediction of Turbulent Skin Friction and Heat Transfer in High-speed Flow written by Aubrey M. Cary and published by . This book was released on 1974 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress In Astronautics and Aeronautics by : Eugene E. Covert
Download or read book Progress In Astronautics and Aeronautics written by Eugene E. Covert and published by AIAA. This book was released on 1985 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of Turbulent Skin Friction for Two-dimensional, Rib-type Surface Roughness Using a Discrete Element Approach by : Robert P. Taylor
Download or read book Prediction of Turbulent Skin Friction for Two-dimensional, Rib-type Surface Roughness Using a Discrete Element Approach written by Robert P. Taylor and published by . This book was released on 1985 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discrete element model for turbulent flow over two-dimensional rib-type roughness is developed and validated. Surface roughness blockage effects and form drag are included as a constituent part of the differential equations. Separation and reattachment of the flow over rib roughness are identified as the dominant flow phenomena, and models are developed which incorporate the separated region geometry into the blockage. The form drag model is based on the pressure difference between the windward and leeward forces of the roughness. Predictions are compared with a variety of data sets. These comparisons indicate that the discrete element approach can be successfully applied for rib-type roughness. However, the model has a more narrow range of application for different surface geometries than the very broad range which has previously been demonstrated for three-dimensional, distributed roughness. Keywords: Two-dimensional roughness; Rib roughness; Boundary layer.
Book Synopsis The Mean Skin Friction Coefficient for a Rough Flat Plate with a Turbulent Two-dimensional Boundary Layer in Compressible Adiabatic Flow, with Application to Wedges, Cylinders and Cones by : Royal Aeronautical Society
Download or read book The Mean Skin Friction Coefficient for a Rough Flat Plate with a Turbulent Two-dimensional Boundary Layer in Compressible Adiabatic Flow, with Application to Wedges, Cylinders and Cones written by Royal Aeronautical Society and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: "ESDU 73016 gives curves and an equation for the value of Reynolds number based on distance along the plate above which an increase in roughness height will not affect skin friction dray. Also given are curves for the mean skin friction on an aerodynamically smooth, or a fully rough, plate at zero incidence for Mach numbers from 0 to 5 for various roughness heights. The use of the data for cylinders, and for cones and wedges in supersonic flow, is explained. Comparison with experimental data shows an r.m.s. error of 3 per cent in incompressible flow rising to 9 per cent for compressible adiabatic flow."--Page [4] of cover.
Book Synopsis Skin-friction Measurements in Incompressible Flow by : Donald W. Smith
Download or read book Skin-friction Measurements in Incompressible Flow written by Donald W. Smith and published by . This book was released on 1959 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiment have been conducted to measure the local surface-shear stress and the average skin-friction coefficient in incompressible flow for a turbulent boundary layer on a smooth flat plate having zero pressure gradient. Data were obtained for a range of Reynolds numbers from 1 million to 45 million. The local surface-shear stress was measured by a floating-element skin-friction balance and also by a calibrated total head tube located on the surface of the test wall. The average skin-friction coefficient was obtained from boundary-layer velocity profiles.
Book Synopsis Skin-Friction Measurements in An Incompressible Pressure-Gradient Turbulent Boundary Layer. Review of Techniques and Results by :
Download or read book Skin-Friction Measurements in An Incompressible Pressure-Gradient Turbulent Boundary Layer. Review of Techniques and Results written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental definition of the local and integral values of friction drag of an aircraft or its elements is one of the basic problems of applied aerodynamics. We also should note the undoubted significance of this value for the development of modern lifting profiles and other aircraft elements, the description of near-wall flows in a form of similarity laws and testing of the numerical techniques of computation of flow around such aircrafts. However, to define this value accurately, one should have a clear conception of the possibilities and efficiency of application of one or another technique for a special case of body flow around. Though any experimental work assumes application of a certain concrete technique, including one for skin friction finding, the available literature information is as a rule uncoordinated, i.e., this information reflects only the level of availability of the technique applied. For this reason the researches like devoted to the development of new techniques and investigation of the efficiency of the known ones under various experimental conditions, become very important. The simplified layout gives a pictorial view of the main techniques of skin friction measurement, existing at the present time. The detailed consideration of these techniques is given in The present paper presents a comparative analysis of a number of direct and indirect measuring techniques wen they are applied in a incompressible turbulent boundary layer of a flat plate under the conditions of formation of a unfavorable (positive) and favorable (negative) streamwise pressure gradients on the plate surface, and also in plate gradient-free flow around.
Book Synopsis Calculation of Skin Friction in Two-Dimensional, Transonic, Turbulent Flow by : T. W. Swafford
Download or read book Calculation of Skin Friction in Two-Dimensional, Transonic, Turbulent Flow written by T. W. Swafford and published by . This book was released on 1979 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of five computer programs which calculate skin friction and boundary-layer integral properties in two-dimensional, turbulent, transonic flow was conducted. The five programs were of varying complexity and consisted of four boundary-layer-type methods with turbulence modeling varying from algebraic eddy viscosity models to a two-equation of turbulence model, and one mean flow compressible Navier-Stokes technique with algebraic turbulence modeling. The quality of the computed results was judged by comparison with available experimental data. For the data considered (which were nonseparated, two-dimensional, transonic, adiabatic wall data), the most accurate calculations of skin friction were provided by an integral boundary-layer method and a finite difference boundary-layer method, both with algebraic turbulence modeling.
Download or read book NASA SP. written by and published by . This book was released on 1977 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Critical Commentary on Mean Flow Data for Two-dimensional Compressible Turbulent Boundary Layer by : H.H. Fernholz
Download or read book A Critical Commentary on Mean Flow Data for Two-dimensional Compressible Turbulent Boundary Layer written by H.H. Fernholz and published by . This book was released on 1980 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charts for Interpolation of Local Skin Friction from Experimental Turbulent Velocity Profiles by : Jerry M. Allen
Download or read book Charts for Interpolation of Local Skin Friction from Experimental Turbulent Velocity Profiles written by Jerry M. Allen and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calculation Methods for Compressible Turbulent Boundary Layers--1976 by : Dennis M. Bushnell
Download or read book Calculation Methods for Compressible Turbulent Boundary Layers--1976 written by Dennis M. Bushnell and published by . This book was released on 1977 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
