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Application of Sliding and Dynamic Mesh Techniques for Flow Simulation of Helicopter's Take-off and Landing

並列摘要


Since experimental measurement data related to the complex flow fields surrounding helicopters are difficult to obtain, this study employed the CFD methods in combination with the sliding mesh and dynamic mesh techniques to perform numerical simulations of the dynamic flow fields generated by helicopter take-off and landing. In the present research the finite volume method combined with sliding and dynamic mesh techniques have been used to simulate the flow field around a moving helicopter, and then to examine how complex dynamic flow fields affect the safety of helicopter's take-off and landing. The proposed research methods could not only reveal the flow physics during take-off and landing of helicopters, but also provide critical data for their safety design which would benefit the development of domestic helicopter industry.

並列關鍵字

Helicopter Sliding mesh Dynamic mesh CFD methods

參考文獻


Doerffer, P. and Szulc, O., “Numerical Simulation of Model Helicopter Rotor in Hover,” TASK QUARTERLY, Vol. 12, No. 3, July-September 2008, pp. 227-236.
Sides, J., Pahlke, K., and Costes, M., “Numerical simulation on flows around helicopters at DLR and ONERA,” Aerospace Science Technology, Vol. 5, 2001, pp. 35-53.
Yeoh, S. L., Papadakis, G., and Yianneskis, M., “Numerical Simulation of Turbulent Flow Characteristics in a Stirred Vessel Using the LES and RANS Approaches with the Sliding/Deforming Mesh Methodology,” Chemical Engineering Research and Design, Vol. 82, Issue 7, July 2004, pp. 834-848.
Steijl, R. and Barakos, G., “Sliding Mesh Algorithm for CFD Analysis of Helicopter Rotor-Fuselage Aerodynamics,” International Journal for Numerical Methods in Fluid, Vol. 58, 2008, pp. 527-549.
Murayama, M., Nakahashi, K., and Matsushima, K., “Unstructured Dynamic Mesh for Large Movement and Deformation,” American Institute of Aeronautics and Astronautics, 2002, pp. 1-11.

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