Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30172
A Hybrid Overset Algorithm for Aerodynamic Problems with Moving Objects

Authors: S. M. H. Karimian, F. S. Salehi, H. Alisadeghi

Abstract:

A two-dimensional moving mesh algorithm is developed to simulate the general motion of two rotating bodies with relative translational motion. The grid includes a background grid and two sets of grids around the moving bodies. With this grid arrangement rotational and translational motions of two bodies are handled separately, with no complications. Inter-grid boundaries are determined based on their distances from two bodies. In this method, the overset concept is applied to hybrid grid, and flow variables are interpolated using a simple stencil. To evaluate this moving mesh algorithm unsteady Euler flow is solved for different cases using dual-time method of Jameson. Numerical results show excellent agreement with experimental data and other numerical results. To demonstrate the capability of present algorithm for accurate solution of flow fields around moving bodies, some benchmark problems have been defined in this paper.

Keywords: Moving mesh, Overset grid, Unsteady Euler, Relative motion.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062056

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1341

References:


[1] J. Sides, K. Pahlke, and M. Costes, "Numerical Simulation of Flows around Helicopters at DLR and ONERA" Aerosp. Sci. Technol., vol. 5, 2001, pp. 35-53.
[2] A. Masud, M. Bhanabhagvanwala, and R. A. Khurram "An Adaptive Mesh Rezoning Scheme for Moving Boundary Flows and Fluid-Structure Interaction" Computer and Fluids J., vol. 36, 2007, pp. 77-91
[3] W. S. Oh, J. S. Kim, O. J. Kwon, "Time-Accurate Navier-Stokes Simulation of Vortex Convection Using An Unstructured Daynamic Mesh Procedure" Computer and Fluids J., vol. 32, 2003, pp. 727-749
[4] C. Farhat, P. Geuzaine, G. Brown, "Application of A Three-Field Nonlinear Fluid-Structure Formulation To The Prediction of The Aerorlastic Parameters of An F-16 Fighter" Computer and Fluids J., vol. 32, 2003, pp. 3-29
[5] Z. Zhang, A. J. Gill, O. Hassan, and K. Morgan, "The Simulation of 3D Unsteady Incompressible Flow with Moving Boundaries On Unstructured Meshes" Computer and Fluids J., vol. 37, 2008, pp. 620-631
[6] A. L. Gationde, "A Dual-Time for Solution of the Unsteady Euler Equation" Aeronautical J., vol. 98, 1994, pp. 283-291
[7] A. Goswami, I. H. Parpia "Grid Restructuring for Moving Boundaries" AIAA Paper, No. 91-1589-CP, 1991
[8] Batina, J. T., "Unsteady Euler Algorithm with Unstructured Dynamic Mesh for Complex-Aircraft Aerodynamic Analysis" AIAA J., vol. 29, no. 3, 1991, pp. 327-33.
[9] S. Z. Pirzadeh, "An Adaptive Unstructured Grid Method by Grid Subdivision, Local Remeshing and Grid Movenemt" AIAA Paper No. 92-0051, 1992.
[10] A. Jahangirian, and M. Hadidoolabi, "Unstructured Moving Grids for Implicit Calculation of Unsteady Compressible Viscous flow", International Journal for Numerical Methods in Fluids, 2005, 47, pp. 1107-1113.
[11] Y. Zheng, R. W. Lewis, and D. T. Gethin, "Three-Dimensional Unstructured Mesh Generation. Part 1-3" Computer Methods in Applied Mechanics and Engineering J., vol. 134, 1966, , pp. 175-181.
[12] L. P Zhang., Z. J. Wang, "A Block LU-SGS Implicit Dual Time- Stepping Algorithm for Hybrid Dynamic Meshes", Computers & Fluids J., vol. 33, 2004, pp. 891-916.
[13] J. L. Steger, F. C Dougherty., and J. A. Benek, "A Chimera Grid Scheme" in Advances in Grid Generation, American Society of Mechanical Engineers, FED, New York, 1983, Vol. 5, pp. 59-69
[14] J. A. Benek, P. G. Buning, and J. L. Steger, "A 3-D Chimera Grid Embedding Technique" AIAA Paper No. 85-1523, 1985
[15] R. L. Meakin, "Moving Body Overset Grid Methods for Complete Aircraft Tiltrotor Simulation" AIAA Paper No. 93-3350, 1993.
[16] F. Togashi, K. Nakahashi, Y. Ito, T. Iwamiya, and Y. Shimbo, "Flow Simulation of NAL Experimental Supersonic Airplan/Booster Seperation Using Overset Unstructured Grids" Computers & Fluids J., vol. 30, 2001, pp. 673-688
[17] F. Togashi, Y. Ito, K. Nakahashi, and S. Obayashi, "Extensions of Overset Unstructured Grids to Multiple Bodies in Contact" J. Aircraft, vol. 43, no. 1, 2006, pp. 52-57
[18] S. J. Zhang, J. Liu, and Y. S. Chen, "Numerical Simulation of Stage Separation with an Unstructured Chimera Grid Method" AIAA Paper No. 2004-4723, 2004.
[19] C. B. Allen, "CHIMERA volume grid generation within the EROS code" Proc. IMechE, Part G: J. Aerospace Engineering, 2000, vol. 214, no. 3, pp. 125-141
[20] W. Liao, J. Cai, M. H. Tsai, "A Multigrid Overset Grid Flow Solver with Implicit Hole Cutting Method" Computer Methods in Applied Mechanics and Engineering J., vol. 196, 2007, pp. 1701-1715.
[21] M. J. Aftosmis, M. J. Berger, and J. E. Melton, "Robust and Efficient Cartesian Mesh Generation for Component-Based Geometry" AIAA Paper No. 97-0196, 1997
[22] S. M. Mirsajedi, S. M. H. Karimian, and M. Math, "A Multizone Moving Mesh Algorithm for Simulation of Flow Around a Rigid Body With Arbitrary Motion" ASME Journal of Fluids Engineering, vol. 128 2006, pp. 297-304
[23] S. M. Mirsajedi, and S. M. H. Karimian, "Evaluation of A Two-Dimentional Moving-Mesh Method for Rigid Body Mptions" Aeronautical J., vol. , 110, no. 1109, 2006, pp. 429-438
[24] H. Alisadeghi, S. M. H. Karimian, A. R. Jahangirian, "An Implicit Dual Time Stepping Algorithm for Hybrid Dynamic Meshes" in Proc. 14th Annual Conference of The Computational Fluid Dynamics, Canada. July 2006
[25] S. Murman, M. Aftosmis, and M. Berger, "Implicit Approaches for Moving Boundaries in A 3-D Cartesian Method" AIAA Paper No. 2003-1119, 2003
[26] C. W., Mastin, and H. V. McConnaughey, "Computational Problems on Composite Grids" AIAA Paper No. 84-1611, 1984
[27] H. S. Tang, "Study On A Grid Interface Algorithm for Solutions of Incompressible Navier-Stoks Equation" Computers and Fluids J., vol. 35, 2006, pp 1372-1383
[28] A. Jameson, W. Schmidt, and E. Turkel, "Numerical Solution of The Euler Equations by Finite Volume Methods Using Runge-Kutta Time Stepping Schemes" AIAA Paper No. 81-1259, 1981
[29] Compendium of Unsteady Aerodynamic Measurements, Report No. AGARD-702, 1982