3D FLOW CALCULATIONS WITH AN A-L-E DESCRIPTION USING SPACE-TIME FINITE ELEMENTS
✍ Scribed by GÜLÇAT, ÜLGEN ;MISIRLIOĞLU, AYDIN ;ASLAN, A. RÜSTEM
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 327 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1069-8299
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✦ Synopsis
A space±time ®nite element method based on an arbitrary Lagrangian±Eulerian description is developed and implemented for the solution of Navier±Stokes equations for predicting the unsteady incompressible ¯ows past arbitrary geometries. The governing equations are expressed in the ®xed frame of reference wherein the terms related to grid motion are included. Superparametric space±time elements are used in discretization of the domain in which the ®nite elements are both allowed to move and deform. The code developed here is calibrated and tested on the ¯ow about a drifting sphere. First, the unidirectionally drifting sphere is set to drift from a steady state at an initial Reynolds number of 1000. In addition, laminar ¯ow about a drifting and falling sphere is studied, starting from the steady state at a Reynolds number of 10,000.