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An adaptive three-dimensional Cartes...

Hunt, Jason Daniel.

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An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations./
作者:	Hunt, Jason Daniel.
面頁冊數:	262 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 0859.
Contained By:	Dissertation Abstracts International65-02B.
標題:	Engineering, Aerospace. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3121947

An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations.
Hunt, Jason Daniel.

An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations. - 262 p.

Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 0859.

Thesis (Ph.D.)--University of Michigan, 2004.

An adaptive three-dimensional Cartesian approach for the parallel computation of compressible flow about static and dynamic configurations has been developed and validated. This is a further step towards a goal that remains elusive for CFD codes: the ability to model complex dynamic-geometry problems in a quick and automated manner.Subjects--Topical Terms:

1018395
Engineering, Aerospace.

An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations.
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245 1 3 $a An adaptive three-dimensional Cartesian approach for the parallel computation of inviscid flow about static and dynamic configurations.
300 $a 262 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 0859.
500 $a Chair: Kenneth G. Powell.
502 $a Thesis (Ph.D.)--University of Michigan, 2004.
520 $a An adaptive three-dimensional Cartesian approach for the parallel computation of compressible flow about static and dynamic configurations has been developed and validated. This is a further step towards a goal that remains elusive for CFD codes: the ability to model complex dynamic-geometry problems in a quick and automated manner.
520 $a The underlying flow-solution method solves the three-dimensional Euler equations using a MUSCL-type finite-volume approach to achieve higher-order spatial accuracy. The flow solution, either steady or unsteady, is advanced in time via a two-stage time-stepping scheme. This basic solution method has been incorporated into a parallel block-adaptive Cartesian framework, using a block-octtree data structure to represent varying spatial resolution, and to compute flow solutions in parallel.
520 $a The ability to represent static geometric configurations has been introduced by cutting a geometric configuration out of a background block-adaptive Cartesian grid, then solving for the flow on the resulting volume grid. This approach has been extended for dynamic geometric configurations: components of a given configuration were permitted to independently move, according to prescribed rigid-body motion.
520 $a Two flow-solver difficulties arise as a result of introducing static and dynamic configurations: small time steps; and the disappearance/appearance of cell volume during a time integration step. Both of these problems have been remedied through cell merging. The concept of cell merging and its implementation within the parallel block-adaptive method is described. While the parallelization of certain grid-generation and cell-cutting routines resulted from this work, the most significant contribution was developing the novel cell-merging paradigm that was incorporated into the parallel block-adaptive framework.
520 $a Lastly, example simulations both to validate the developed method and to demonstrate its full capabilities have been carried out. A simple, steady reflected shock case is presented to validate the basic flow solver. A steady diamond-airfoil case is presented to validate the cell-cutting approach for static geometries. A shock impinging on two cylinders is presented to validate the unsteady flow-solution algorithm. A dynamic-geometry case, directly analogous to the steady diamond-airfoil case, is presented to validate the dynamic cell-merging algorithm. A steady finite-wing calculation, presented to validate the three-dimensional flow solver and static-geometry cell cutting, is presented. The final case in the dissertation, demonstrates the full capabilities of the code developed in this work: it is three-dimensional and involves a dynamic geometry with bodies moving relative to each other.
590 $a School code: 0127.
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Computer Science. $3 626642
650 4 $a Physics, Fluid and Plasma. $3 1018402
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710 2 0 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 65-02B.
790 1 0 $a Powell, Kenneth G., $e advisor
790 $a 0127
791 $a Ph.D.
792 $a 2004
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