Earthquake analysis of gravity dam-reservoir systems using the eulerian and lagrangian approaches

It is well known that homogeneous elliptic field problems may be alternatively posed as infinite systems of boundary integral equations obtained by using a suitable family of kernel functions and integration by parts [1], [2]. A determinate system of non-homogeneous linear algebraic equations is obtained therefrom by discretizing the system, using elements defined after the manner of finite elements and a finite member of Kernel functions [1]. The result is a practical and powerful numerical method for the solution of elliptic field problems which may easily be generalized to rival the finite element method in its range of applicability.

Interelement Continuity in the Boundary Element Method

As in many areas of science and technology, computational mathematics performed on highspeed, large-memory computers has become an essential ingredient of modern coating process research and development. Traditionally, most advances in the manufacture of imaging films, magnetic storage and many other precision coatings have been based on extensive experimentation. A predominantly empirical approach was sufficient to achieve a remarkable level of technological perfection. Nowadays, however, rapidly intensifying competitive pressures demand ever increasing coating speeds, thinner and more uniform coatings (often multilayered), reduced defect levels and diminished waste. Further refinements in coating technology become increasingly intricate and put a premium on analyzing the physical mechanisms that determine success or failure of a coating process. Imperfections in a coated layer may arise from a wide variety of mechanisms, including inhomogeneities or foreign matter in the coating solutions, disturbances induced by equipment vibration or uncontrolled air flow, various wetting phenomena, and also flow instabilities that grow in the coating device but partially decay further downstream. Complete coating failure, on the other hand, almost exclusively arises fromcatastrophic hydrodynamic instabilities. It is often aggravated by edge effects, and might be triggered by large transients of the sort encountered during start-up or splice passage. Catastrophic coating failure may also stem from the inability of the coating liquid to displace sufficient air previously in contact with the dry substrate.

Advances in Computational Methods for Free-Surface Flows

A Lagrangian method for the shallow water equations based on a Voronoi mesh—one dimensional results

The aim of this thesis is to develop and then to implement a framework for numerical simulation of fully coupled thermal fluid structure interaction, a phenomenon which occurs in a large set of engineering problems As for such calculations normally a great amount of computational time is needed, an important aspect of this work is the optimization of the numerical procedure

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P. Bettess

Papers

Numerical methods for coupled problems

Numerical methods for coupled problems : proceedings of the International Conference held at the University College, Swansea, 7th-11th September 1981