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An octree-based solution-adaptive Cartesian grid generator and Euler solver for the simulation of three-dimensional inviscid compressible flows
Date
2016-01-01
Author
Kara, Emre
KUTLAR, AHMET İHSAN
Aksel, Mehmet Haluk
Metadata
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Cartesian grid generation methods are especially designed algorithms to generate automatic grids for complex geometries and to simulate flows around such geometries regardless of the body shape. Cartesian grids are generated by constructing an octree-based data structure for the purpose of connecting the Cartesian cells to each other. Entire algorithm is implemented in object-oriented FORTRAN programming language. Some special Cartesian algorithms, namely, Ray-Casting method and cut-cell adaptation are used around three-dimensional closed bodies. The flow field around the solid body is obtained by employing Euler equations which are discretised by using finite volume method. Validation of the numerical results is accomplished by comparison with the experimentally obtained data from the flow around ONERA M6 wing. Employing the solution adaptation techniques, pressure coefficients and contours of the flow around the wing have verified and captured two shock waves (weak leading edge shock and midchord shock) by the developed grid-generator-with-eULER-solver-for-3D-applications (GeULER3D) code.
Subject Keywords
Cartesian grid generation
,
Octree data structure
,
Ray casting method
,
Cut cell adaptation
,
Object oriented fortran programming
,
Euler solver
,
Computational fluid dynamics
URI
https://hdl.handle.net/11511/56460
Journal
PROGRESS IN COMPUTATIONAL FLUID DYNAMICS
DOI
https://doi.org/10.1504/pcfd.2016.076247
Collections
Department of Mechanical Engineering, Article
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E. Kara, A. İ. KUTLAR, and M. H. Aksel, “An octree-based solution-adaptive Cartesian grid generator and Euler solver for the simulation of three-dimensional inviscid compressible flows,”
PROGRESS IN COMPUTATIONAL FLUID DYNAMICS
, pp. 131–145, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56460.