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Title: High‐order methods for low Reynolds number flows around moving obstacles based on universal meshes

Journal Article · · International Journal for Numerical Methods in Engineering
DOI:https://doi.org/10.1002/nme.4891· OSTI ID:1400702
 [1];  [2];  [3]
  1. Computational and Mathematical Engineering Stanford University CA USA
  2. Mechanical Engineering Stanford University CA USA
  3. Computational and Mathematical Engineering Stanford University CA USA, Mechanical Engineering Stanford University CA USA

Summary We propose a family of methods for simulating two‐dimensional incompressible, low Reynolds number flow around a moving obstacle whose motion is prescribed. The methods make use of a universal mesh: a fixed background mesh that adapts to the geometry of the immersed obstacle at all times by adjusting a few elements in the neighborhood of the obstacle's boundary. The resulting mesh provides a conforming triangulation of the fluid domain over which discretizations of any desired order of accuracy in space and time can be constructed using standard finite element spaces together with off‐the‐shelf time integrators. We demonstrate the approach by using Taylor‐Hood elements to approximate the fluid velocity and pressure. To integrate in time, we consider implicit Runge‐Kutta schemes as well as a fractional step scheme. We illustrate the methods and study their convergence numerically via examples that involve flow around obstacles that undergo prescribed deformations. Copyright © 2015 John Wiley & Sons, Ltd.

Sponsoring Organization:
USDOE
OSTI ID:
1400702
Journal Information:
International Journal for Numerical Methods in Engineering, Journal Name: International Journal for Numerical Methods in Engineering Vol. 104 Journal Issue: 7; ISSN 0029-5981
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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  • Cori, Jean-François; Etienne, Stephane; Pelletier, Dominique
  • 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition https://doi.org/10.2514/6.2010-1445
conference June 2010
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