Validation of an automated Chimera/6-DOF methodology for multiple moving body problems

Hall, Les; Parthasarathy, V.

doi:10.2514/6.1998-753

Cited by 17 publications

(9 citation statements)

References 3 publications

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“…The physical proper- ties, geometric coefficients and computing status parameters of the wings and storages are selected from ref. [36]. The grids for the solid surface, symmetry plane and symmetric overset grids are shown in Figure 10.…”

Section: Applications and Analyses 41 Wing/store Separationmentioning

confidence: 99%

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Structure overset grid method and its applications to simulation of multi-body separation

Zhang

Fan

Yuan

et al. 2015

Sci. China Phys. Mech. Astron.

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This paper proposes an automatic structure overset grid method, which utilizes the hole-surface optimization with one-step searching, wall-surface grid oversetting, and dynamic overset grid approaches to achieve the high adaptability of overset grids for complex multi-body aircrafts. Specifically, based on the automatic structure overset grids, the method first solves the coupling of Navier-Stokes (N-S) unsteady flow equation and 6DOF motion equation, and establishes the multi-body collision model. Then, the numerical simulation of unsteady flow for complex aircrafts' multi-body separation, the simulation of multi-body separating trajectory and the separation safety analysis are accomplished. Thus, the method can properly handle practical engineering problems including the wing/drop tank separation, aircraft/mount separation, and cluster bomb projection. Experiments show that our numerical results match well with experimental results, which demonstrates the effectiveness of our methods in solving the multi-body separation problem for aircrafts with complex shapes. dynamic overset grids, multi-body separations, CFD PACS number(s): 47.85.Gj, 47.85.MCitation: Zhang H R, Fan J J, Yuan W, et al. Structure overset grid method and its applications to simulation of multi-body separation.

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Section: Applications and Analyses 41 Wing/store Separationmentioning

confidence: 99%

“…The geometrical model [36] is shown in Figure 9. Ejection force is given at the initial time to accelerate the separation procedure.…”

Section: Applications and Analyses 41 Wing/store Separationmentioning

confidence: 99%

Structure overset grid method and its applications to simulation of multi-body separation

Zhang

Fan

Yuan

et al. 2015

Sci. China Phys. Mech. Astron.

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“…The store and ejector characteristics are given detailedly in Ref. [19]. Figure 14 shows several overset grids at different time instants.…”

Section: -Element Airfoilmentioning

confidence: 99%

“…The model is described detailedly in Ref. [19]. The initial overlapping unstructured grid shown in Fig.…”

Section: -Element Airfoilmentioning

confidence: 99%

A fast and reliable overset unstructured grids approach

Kang

Yan

et al. 2013

Acta Mech Sin

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A cell-centred overset unstructured grids approach is developed. In this approach, the intergrid boundary is initially established based on the wall distance from the cell centre, and is then optimized. To accelerate the intergrid-boundary definition much more, a neighbor-toneighbor donor search algorithm based on advancing-front method is modified with the help of minimum cuboid boxes. To simplify the communications between different grid cell types and to obtain second-order spatial accuracy, a new interpolation method is constructed based on linear reconstruction, which employs only one layer of fringe cells along the intergrid boundary. For unsteady flows with relative motion, the intergrid boundary can be redefined fast and automatically. Several numerical results show that the present dynamic overset unstructured grids approach is accurate and reliable.

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“…More applications of the automated Chimera methodology in the three-dimensional case are included in other publications [10,11] …”

Section: Unsteady Simulation Of a Store Separating From A Wingmentioning

confidence: 99%

A fully automated Chimera methodology for multiple moving body problems

Wang

Parthasarathy

2000

Int. J. Numer. Meth. Fluids

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Validation of an automated Chimera/6-DOF methodology for multiple moving body problems

Cited by 17 publications

References 3 publications

Structure overset grid method and its applications to simulation of multi-body separation

Structure overset grid method and its applications to simulation of multi-body separation

A fast and reliable overset unstructured grids approach

A fully automated Chimera methodology for multiple moving body problems

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