Thursday, February 2, 9:30 am in room MTH 3206, University of Maryland,
College Park
Joint Numerical Analysis - Computational Science and Engineering Seminar
Cartesian Grid Methods for Compressible Flow in Complex
Geometries
Prof. Marsha Berger
Courant Institute, New York University
berger@berger.cims.nyu.edu
We discuss compressible inviscid flow computations in complex
regions such as the exterior of an aircraft. Our approach is to
use non-body fitted rectangular (Cartesian) grids. Cartesian
grids are easier to generate than body fitted grids, and simpler
(for the most part) than unstructured meshes. This talk will
survey the geometric information the flow solver needs to extract,
for example, from a CAD description of the boundary. We will also
discuss the numerical algorithms needed as the boundary intersects
the grid in irregular ways. An adaptive mesh refinement strategy
allows us to resolve fine features of the boundary and the flow field.
We present accuracy studies in two dimensional model problems,and
full three dimensional computations using realistic aircraft
configurations.
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