Download or read book Technique of Determining the Viscous Drag of a Ship Model by Means of a Wake Survey written by Jin Wu and published by . This book was released on 1963 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of the present work were to evaluate the validity and accuracy of the various viscous drag formulas, to investigate the influence of turbulence in the wake, and to study the feasi bility of a practical, routine technique for making viscous-drag measurements. An exact formula for the viscous drag was derived in a recent paper, in which two new approximations and evaluation of their errors by means of a mathematical model were also presented. The momentum-control surface selected in this case is a rectangular box moving with the ship model at a constant speed U in the negative x-direction. This control surface consists of two vertical transverse sections, S sub O, far ahead of the model, and S, at a moderate distance behind it, over which the measurements are to be taken; the free surface, through which there is no momentum flux; and bottom and sides, which are situated at great distance from the model. It was assumed that the flow is irrotational outside the wake and that this external potential flow could be continued analytically into the wake by a suit able distribution of sources and sinks within the ship model and the wake. (Author).

Download or read book Determination of the Viscous Drag of a Ship Model written by K. T. S. Tzou and published by . This book was released on 1967 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modification and refinements of equipment, techniques and method of analysis of wake survey data for determining the viscous drag of a ship model are described. At low Froude numbers results are in better agreement with a correlation line than previous values, but strong variation of viscous drag with Froude number is confirmed. (Author).

Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 2180 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 1982 with total page 1282 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 Effect of Wake on Wave Resistance of a Ship Model written by M. Moreno and published by . This book was released on 1975 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the purpose of resolving the question of the influence of its wake on the wavemaking resistance of a ship, the total, viscous and wavemaking resistance of a Series 60 ship model were measured with the wetted surface first smooth, and then rough. It was found that the wave resistance was significantly less with the rough surface, implying that viscous effects should not be neglected in the development of higher-order wave theory. Since the wake-survey method was used to determine the viscous resistance, the opportunity was taken to compare the results with roughness with the values obtained by calculating the boundary layer on the rough 'equivalent' body of revolution, with satisfactory agreement.

Download or read book The Separation of Viscous Drag and Wave Drag by Means of the Wake Survey written by Marshall P. Tulin and published by . This book was released on 1951 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The wake-survey method of measuring viscous drag is analyzed for flows with surface waves and the result is obtained that the separation of wave and viscous drag is possible and that the method of separation is, without consideration of practical aspects, identical for submerged and surface flows. (Author).

Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NBS Special Publication written by and published by . This book was released on 1965 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Research in the United States written by and published by . This book was released on 1966 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publications written by and published by . This book was released on 1953 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Hydraulic Laboratory Research in the United States written by and published by . This book was released on 1970 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publication National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1934 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions North East Coast Institution of Engineers and Shipbuilders written by North East Coast Institution of Engineers and Shipbuilders and published by . This book was released on 1981 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in each volume.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Highlights of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1964 with total page 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 1974 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Hydroscience written by Ven Te Chow and published by Elsevier. This book was released on 2013-10-22 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Hydroscience, Volume 3-1966 encompasses naval hydrodynamics, biohydrodynamics, magnetohydrodynamics, hydrology, and water resources. The book presents articles on viscous resistance of ships, magnetohydrodynamics of channel flow, and hydrodynamics of blood flow in the circulatory system. The text also includes articles about the biological treatment of waste water; the processes and trends in the development of sea water conversion; and the linearized steady theory of fully wetted hydrofoils. The developments in the retardation of evaporation by the use of monolayers, as well as the dynamic programming in water resources development are also encompassed. Students and researchers in naval hydrodynamics, biohydrodynamics, magnetohydrodynamics, hydrology, and water resources will find the book invaluable.