Efficient numerical methods to compute unsteady subsonic flows Год выпуска: 2010Автор: Peter Lucas and Hester BijlИздательство: LAP Lambert Academic PublishingСтраниц: 148ISBN: 9783838385761Описание Despite the large increase in computer power and the advances in solver technology, unsteady flow problems still may require a vast amount of computing time. In this work two approaches are investigated that should lead to a reduction in computing times for unsteady subsonic flows. In the first part of this work a new refinement strategy for grid adaptation is proposed that enables the user to a priori define the maximum usable computer resources. In the second part of this work a Jacobian-free Newton-Krylov algorithm is tailored for unsteady subsonic flow problems. With this algorithm computing times are reduced with one order of magnitude compared to the traditional used solver.
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