Download or read book A Third Procedure for Linearized Fully Cavitating Hydrofoil Section Design written by B. R. Parkin and published by . This book was released on 1977 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third design procedure for fully cavitating hydrofoils is based upon a linearized inverse theory of two-dimensional cavity flows at arbitrary cavitation number. The cavity surfaces are assumed to originate at the leading and trailing edges of the wetted surface. This report reviews and completes the basic theory and gives detailed examples obtained from the resulting parametric design technique. In the third design procedure, one specifies the design lift coefficient, the cavitation number and the upper cavity thickness at two points along the profile chord. A prescribed pressure distribution shape is also selected. The method also includes off-design calculations in accordance with the direct linearized theory of cavity flows which determines the flow states for which interference can occur between the upper surface of the cavity and the upper nonwetted surface of the profile. The hydrodynamic performance of specific point designs is also given by these direct calculations. The chief new feature of the third design procedure is the ability of the designer to prescribe two points on the cavity surface instead of one as heretofore.
Download or read book Computer Program Description for Supercavitating Hydrofoil Section Design According to Linearized Theory written by R. F. Davis and published by . This book was released on 1975 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer program used for calculating section properties of fully cavitating hydrofoils by a linearized Inverse Design method was extensively revamped and made operational on the IBM System 370/168 Computer. The changes to the program are discussed and the complete program is listed.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MRIS Abstracts written by Maritime Research Information Service and published by . This book was released on 1980 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Numerical Design Study of Fully Cavitating Hydrofoil Sections Having Prescribed Pressure Distributions written by and published by . This book was released on 1975 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a study of fully cavitating hydrofoil sections are reported. All calculations are based upon the linearized theory of cavity flow in two dimensions. This report is the first detailed exploration of the consequences of the general inverse theory which permits the designer to specify the design values of the lift coefficient, cavitation number and the thickness of the upper surface of the cavity at the profile trailing edge as well as the shape of the pressure distribution on the wetted surface. The ordinates of the upper cavity contour and the wetted surface contour are calculated. The design angle of attack, the cavity length, the drag coefficient and the moment coefficient are also calculated. It is found for almost any cavitation number and any design lift coefficient that if the center of pressure is placed as closely as possible to the profile leading edge the resulting profile will have the most favorable lift-to-drag ratio. The study also includes off-design calculations, in accordance with the direct theory of cavity flows, to determine cavity interference with the upper nonwetted surface of the profile and the hydrodynamic forces of particular designs.
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 Cambered Bodies in Cavitating Flow a Nonlinear Analysis and Design Procedure written by Stanford University. Department of Civil Engineering and published by . This book was released on 1966 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonlinear method is given for the description, in terms of nonphysical parameters, of fully cavitating cambered bodies in two-dimensional flow. The method, based on complex function theory and the spiral-vortex cavity model, permits a quasi-optimum design of certain classes of hydrofoils. Details of the procedure and means for its extension to other cambered bodies are described. (Author).
Download or read book The Inverse Problem of the Linearized Theory of Fully cavitating Hydrofoils written by Blaine Raphael Parkin and published by . This book was released on 1964 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the basic theory and some numerical results on the inverse problem for fullycavitating hydrofoils. The problem is treated by the twodimensional linearized theory of steady cavity flows. The problem of optimum hydrodynamic design of cavitating blades or foils is explored and the conditions required to insure realistic cavity flows are examined. As a result of these considerations three methods for profile design are put forward. Two of these methods are treated numerically. It is found that once the pressure distribution has been prescribed, the shape of the profile depends upon the design cavitation number. The camber decreases as the cavitation number increases. This report does not discuss the numerical methods used in the study. They are given separate documentation in AD-606 062. (Author).
Download or read book Numerical Methods and Program Description for the Inverse Problem of Linearized Fully cavitating Hydrofoil Theory written by R. S. Grote and published by . This book was released on 1964 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supercavitating 3 D Hydrofoils and Propellers Prediction of Performance and Design written by Spyros A. Kinnas and published by . This book was released on 2001 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent numerical techniques for the prediction of cavitating flows, in linear and nonlinear theories, are applied on super-cavitating 2-D, 3-D hydrofoils and propellers. Some of these techniques, when incorporated within a non-linear optimization algorithm, can lead to efficient supercavitating hydrofoil or propeller designs. This lecture will address 3-D supercavitating hydrofoils, supercavitating and surface-piercing propellers.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1970 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1977 with total page 1604 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 1971 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Design Study of TAP 1 Supercavitating Foil and Strut written by and published by . This book was released on 1977 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Ship Research written by and published by . This book was released on 1968 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
