Download or read book The Laminar Boundary Layer on Spinning Bodies of Revolution written by Ralph John Muraca and published by . This book was released on 1970 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Laminar Boundary Layer on a Spinning Body of Revolution in Axial Flow written by H. SCHLICHTING and published by . This book was released on 1955 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boundary layer Studies on Spinning Bodies of Revolution written by Walter B. Sturek and published by . This book was released on 1974 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the effects of spin induced distortion of the boundary-layer on a spinning cone and tangent-ogive-cylinder model for small angle of attack at Mach 2, 3 and 4 is reported. The profile of the location of boundary-layer transition has been determined completely about the surface of the models from spark shadowgraphs. These spark shadowgraphs were taken with the model mounted on an offset strut which was rolled incrementally in azimuth to reveal the entire surface of the model. Strain gage balance measurements of Magnus and normal force were made for three significantly different boundary-layer configurations--predominately laminar, predominately turbulent, tripped to turbulent--and confirm the pronounced sensitivity of Magnus to boundary-layer configuration. (Author).
Download or read book The Characteristics of a Laminar Boundary Layer on a Spinning Tangent Ogive Cylinder at Angle of Attack written by H. R. Vaughn and published by . This book was released on 1972 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Streamwise velocity profiles of a laminar boundary layer were determined from pitot pressure measurements made in a supersonic wind tunnel on a spinning tangent ogive cylinder at zero and four degrees angle of attack. A transformation was found which transforms the velocity profiles to be in agreement with the incompressible Blasius profile.
Download or read book Laminar Flow about a Rotating Body of Revolution in an Axial Airstream written by Hermann Schlichting and published by . This book was released on 1956 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is given for calculating the incompressible laminar boundary layer on a rotating body of revolution at zero angle of attack in an airstream. The method is based on two boundary-layer momentum equations, one for the meridional direction and one for the circumferential direction. A simultaneous solution of both momentum equations yields the boundary-layer parameters, the friction drag, and the torque. The boundary-layer flow about a rotating sphere, about a body with a blunt base, and about two streamline bodies is calculated. The separation point is found to be affected by the spin.
Download or read book A Magnus Theory for Bodies of Revolution written by H. R. Vaughn and published by . This book was released on 1973 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis is presented for predicting Magnus force and moment coefficients for spinning ogive cylinder, cone cylinder, and conical bodies with laminar, transitional and turbulent boundary layers. The results compare favorably with experimental data.
Download or read book Laminar Flow about a Rotating Body of Revolution in an Axial Airstream written by H. Schlichting and published by BiblioGov. This book was released on 2013-07 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have set ourselves the problem of calculating the laminar flow on a body of revolution in an axial flow which simultaneously rotates about its axis. The problem mentioned above, the flow about a rotating disk in a flow, which we solved some time ago, represents the first step in the calculation of the flow on the rotating body of revolution in a flow insofar as, in the case of a round nose, a small region about the front stagnation point of the body of revolution may be replaced by its tangential plane. In our problem regarding the rotating body of revolution in a flow, for laminar flow, one of the limiting cases is known: that of the body which is in an axial approach flow but does not rotate. The other limiting case, namely the flow in the neighborhood of a body which rotates but is not subjected to a flow is known only for the rotating circular cylinder, aside from the rotating disk. In the case of the cylinder one deals with a distribution of the circumferential velocity according to the law v = omega R(exp 2)/r where R signifies the cylinder radius, r the distance from the center, and omega the angular velocity of the rotation. The velocity distribution as it is produced here by the friction effect is therefore the same as in the neighborhood of a potential vortex. When we treat, in what follows, the general case of the rotating body of revolution in a flow according to the calculation methods of Prandtl's boundary-layer theory, we must keep in mind that this solution cannot contain the limiting case of the body of revolution which only rotates but is not subjected to a flow. However, this is no essential limitation since this case is not of particular importance for practical purposes.
Download or read book Boundary Layer Stability on a Yawed Spinning Body of Revolution and Its Effect on the Magnus Force and Moment written by Ira D. Jacobson and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of the Laminar Boundary Layer on a Spinning Ogive Cylinder in Supersonic Flow written by William C. Ragsdale and published by . This book was released on 1972 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pitot pressure surveys were made of the laminar boundary layer on an ogive-cylinder model at Mach 3.02 and 4.10. Surveys were made at five stations along the model, at angles of attack of zero and four degrees, with and without spin. Tests with spin were performed at Mach 3.02. The pitot pressure data has been used to compute boundary-layer velocity profiles, and results from two data-reduction procedures are presented. Some comparisons are made with theoretical velocity profiles for the zero spin, zero angle-of-attack case. (Author).
Download or read book LAMINAR BOUNDARY LAYERS ON BODIES OF REVOLUTION COMPUTER PROGRAMS AND VORTICITY BUDGETS written by and published by . This book was released on 1968 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The incompressible laminar boundary layer equations are solved for flow about a sphere and an ellipsoid using a finite difference scheme. The effects of vortex stretching on the momentum and vorticity equations are studied.
Download or read book The Compressible Laminar Boundary Layer on Rotating Axisymmetric Bodies written by Sheng To Chu and published by . This book was released on 1955 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnus Effect in the Case of Rotating Cylinders and Shell written by William E. Buford and published by . This book was released on 1954 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Laminar Boundary Layer on a Blunt Body of Revolution at Angle of Attack written by Woo Taik Moon and published by . This book was released on 1973 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boundary Layer Stability on a Yawed Spinning Body of Revolution and Its Effect on the Magnus Force and Moment written by Ira D. Jacobson and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Surveys of the Three Dimensional Boundary Layer on a Yawed Spinning Body of Revolution written by Walter B. Sturek and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental measurements of the three dimensional boundary layer on a yawed, spinning tangent-ogive-cylinder model in supersonic flow are reported. The measurements were made using a flattened total head probe at one axial station near the base of the model for 10 azimuthal stations about the circumference. The test conditions were: M = 3, angle of attack = 4 deg, omega = 0 and 10,000 RPM. The trends observed in comparing measurements with and without the model spinning were: (1) the boundary layer is more thick and less full where surface spin opposes the crossflow velocity; and (2) the boundary layer is less thick and more full where surface spin is in the same direction as the crossflow velocity. (Author).
Download or read book Magnus Effect on Spinning Bodies of Revolution written by Dinesh S. Joshi and published by . This book was released on 1979 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: A numerical finite difference method is developed to solve the three dimensional laminar/turbulent boundary layer equations on a spinning body of revolution at an angle of attack in supersonic flow. Influence of asymmetric transition and the presence of mixed boundary layers is considered to predict Magnus forces and moments. Several contributions to the Magnus effects are considered. These include asymmetric boundary layer displacement thickness, centrifugal pressure, and primary and cross flow wall shear stresses. Boundary layer structure defined by asymmetric transition is shown to critically influence the aerodynamic forces and moments on bodies of revolution. Important variables in the flow field are identified by considering variations of spin rate, Mach number, angle of attack and length of the body. Comparisons are made with experimental data and other theoretical analyses. (Author).
Download or read book Boundary Layer Development on Rotating Bodies of Revolution written by L. Lambropoulos and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many practical cases in turbomachines where the behavior of the three-dimensional axisymetric rotating boundary layers must be known. In this work the authors analyse existing experimental data concerning such rotating viscous flows. It is demonstrated how one may describe such cases in the rotational frame of reference, using simple boundary layer notions. Boundary layer calculations are then performed in order to predict these flows. The theoretical and experimental results are found to be in a very good agreement. (Author).
