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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

A study of the flow of air and water in vertical tubes

Chaudhry, Allah Bakhsh January 1967 (has links)
No description available.
102

Forced convection in curved ducts: multiplicity and stability

Liu, Fang, 劉方 January 2006 (has links)
published_or_final_version / abstract / Mechanical Engineering / Doctoral / Doctor of Philosophy
103

Minimization of stresses and pressure surges in pipes using nonlinear optimization.

El-Ansary, Amgad Saad Eldin. January 1989 (has links)
The control of stresses and liquid pressure surges in pipes is an important problem in the design of hydraulic pipe networks. The method of characteristics has been used to solve the transient stresses and pressures in liquid-filled piping systems. The friction force is included in the equations of motion for the fluid and the pipe wall. The maximum pressure and maximum stress at any point along the length of the pipe are evaluated for the entire simulation time. A nonlinear search technique has been developed using the simplex method. The optimal valve closure is sought, that will minimize the maximum pressure and/or stresses. A continuous optimal valve closure policy is specified using spline functions. Numerical examples are presented showing the reduction of the dynamic pressure and the dynamic stress from linear valve closure to optimal valve closure for a simple pipeline and a complex pipeline. Also, a method for choosing the shortest time of closure which will keep the stresses below specified allowable stresses is presented.
104

The dynamic and static plastic collapse of structural members incorporating axial stiffening

Birch, R. S. January 1987 (has links)
No description available.
105

Mechanical behaviour of a novel three-dimensional composite

Weaver, P. M. January 1992 (has links)
No description available.
106

A Vacuum Tube for an Electrostatic Generator

Pool, John Reginald 08 1900 (has links)
The purpose of this study has been to construct two accelerating tubes with small beam apertures for the Van de Graaff, modifying the prototype tube designed and tested by Wiley (20), to design and construct a vacuum system for evacuating the tubes, and to determine the characteristics of the tube under operating conditions while installed in the generator.
107

Formation of crystallographic textures during manufacturing of tubes of Zircaloy 4.

Vuillaume, Denis Louis January 1977 (has links)
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Bibliography : leaves 58-59. / M.S.
108

Pressure drop and phase fraction in oil-water-air vertical pipe flow

Shean, Arthur Roy January 1976 (has links)
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering. / Microfiche copy available in Archives and Engineering. / Includes bibliographical references. / by Arthur R. Shean. / M.S.
109

Gas liquefaction using a Ranque-Hilsch vortex tube : design criteria and bibliography

Hellyar, Kenneth G January 1980 (has links)
Thesis (Chem.E)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Includes bibliographies. / by Kenneth George Hellyar. / Chem.E
110

An electrostatic-tube storage system

January 1950 (has links)
A.J. Lephakis. / "March 27, 1950." / Bibliography: p. 32. / Army Signal Corps Contract No. W36-039-sc-32037 Project No. 102B Dept. of the Army Project No. 3-99-10-022

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