Download or read book A LINEARIZED THEORY FOR THE UNSTEADY MOTION OF A SUPERCAVITATING HYDROFOIL written by J.A. Geurst and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Linearized Theory of Two dimensional Cavity Flows written by Jan Albert Geurst and published by . This book was released on 1961 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Symmetric wedge flow; connection between linearized theory and non-linear models; Linearized theory of partially cavitating hydrofoils; comparison of theory and experiment; Wall effects on a partially cavitating hydrofoil; Some investigations of a linearized theory for unsteady cavity flows; and Supercavitating hydrofoil in unsteady motion.
Download or read book Linearized Theory of the Unsteady Motion of a Partially Cavitated Hydrofoil written by Herbert Steinberg and published by . This book was released on 1962 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fully Cavitating Hydrofoils in Non steady Motion Under a Free Surface written by C. C. Hsu and published by . This book was released on 1963 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A linearized theory is developed for unsteady two-dimensional cavity flow about thin hydrofoils at zero cavitation number. Expressions are presented for the lift and moment coefficients of a thin supercavitating foil performing arbitrary oscillations, in terms of the coefficient of a power series describing the chordwise amplitude distribution. They are applied to the case of a rigid foil performing heaving and pitching oscillations and to that of oscillating flaps. For very large depth-chord ratios, the lift and moment coefficients for pure heaving and pitching oscillations are identical to those obtained by previous workers. (Author).
Download or read book Fourth Symposium on Naval Hydrodynamics written by Bennett L. Silverstein and published by . This book was released on 1964 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Wall Effect for Unsteady Choked Supercavitating Flow written by Jong H. Kim and published by . This book was released on 1971 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A linear theory for the two-dimensional supercavitating flow past a flat hydrofoil heaving and pitching with small amplitudes in a choked tunnel is developed using the acceleration potential. It is supposed that the streamlines of the cavity always spring from the leading and the trailing edges of the foil and that the foil is inclined at a small angle to the oncoming flow. Also the pressure in the cavity is assumed to be constant. Force and moment coefficients are calculated as functions of reduced frequency and the ratio of tunnel height to chord length. The pressure disturbances caused by the unsteady motion in a tunnel studied far upstream; these are seen to depend on the chord-tunnel height ratio and reduced frequency. (Author).
Download or read book Unsteady Symmetrical Supercavitating Flows Past a Thin Wedge in a Jet written by C. S. Song and published by . This book was released on 1962 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems of symmetrical two-dimensional supercavitating flow about a thin wedge in a finite fluid with two free surfaces are solved by means of a linearized method utilizing the complex acceleration potential. Taking advantage of the symmetry, the otherwise doubly connected region is divided into two identical simply connected regions. An oscillatory-type motion as well as general types of unsteady motions are considered. The solution contains no singularity and, as a result, pressure is everywhere finite. The mathematical condition required for the existence of a singularity-free solution leads to an equation which gives the relationship between the cavity length and the cavitation number. The theoretical results are in good agreement with experimental data for the steadyflow case, but data for the unsteady case are not yet available. (Author).
Download or read book Theoretical and Experimental Investigation of Supercavitating Hydrofoils Operating Near the Free Water Surface written by Virgil E. Johnson and published by . This book was released on 1961 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A General Theory of Unsteady Loads on Cavitating Hydrofoils Computer Use Manual written by James F. Unruh and published by . This book was released on 1973 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manual describes the computer program which can be used to predict loads on finite aspect ratio, general planform, cavitating hydrofoils with both steady and oscillatory foil motion. The details of the theoretical development for predicting unsteady loads on cavitating hydrofoils are covered in a final report. References to the equations in the final report are made, and the manual should be used in conjunction with the final report.
Download or read book Theoretical Determination of Low drag Supercavitating Hydrofoils and Their Two dimensional Characteristics at Zero Cavitation Number written by Virgil E. Johnson and published by . This book was released on 1957 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Two new low-drag hydrofoils for operation at zero cavitation number are derived by the application of the Tulin-Burkart linearized theory. The two-dimensional lift-drag ratios of these two hydrofoils operating at design angle of attack are shown to be, theoretically, about 45 and 80 percent greater than the Tulin-Burkart configuration. A simplified calculation of the location of the upper cavity streamline for arbitrary configurations is also presented.
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Basic Engineering written by and published by . This book was released on 1965 with total page 1184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1978 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Linearized Theory for a Supercavitating Hydrofoil Operating in a Fluid of Finite Depth written by Hung-Ta Ho and published by . This book was released on 1963 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study applies linearized theory to a two dimensional, uniform, supercavitating flow passing over a hydrofoil operating near the surface of a fluid of finite depth. The problem is formulated in the region of the lower half of a transformed plane, and the formulation is applicable to foils of any shape within the scope of the linearized theory and of any location between the free surface and the bottom of the channel. For the case of a flat plate the solution is obtained in terms of Legendre elliptic integrals. Numerical calculations are made for the lift and moment coefficients of the foil immersed at several different distances under the free surface with varying water depths. (Author).
Download or read book The Linearized Theory of a Supercavitating Hydrofoil with a Jet Flap written by HUNG-TA. HO and published by . This book was released on 1961 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical analysis is carried out for the steady cavity flow about thin hydrofoil sections at small incidence alpha, at the trailing edge of which a thin jet emerges at a small deflection pi. The flow is assumed to be inviscid and incompressible and the cavitation number is taken to be zero. The jet is assumed so thin that it can be considered as a vortex sheet across which the velocity is discontinuous. For the case of a flat plate, expressions have been obtained for lift, drag, pressure distribution, pitching moment, the jet shape and the cavity shape. Numerical calculations are made for a number of jet momentum-flux coefficients C sub J lying between 0.01 and 5. (Author).
Download or read book Propulsion hydroelasticity proceedings of the 4th Symposium on Naval Hydrodynamics written by Symposium on Naval Hydrodynamics, 4th (Washington, D.C., 1962) and published by . This book was released on 1963 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics written by and published by . This book was released on 1966 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
