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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2019, Vol. 40 ›› Issue (1): 522330-522330.doi: 10.7527/S1000-6893.2018.22330

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Numerical simulation of amphibious aircraft taxiing at high speed on water using OpenFOAM

DUAN Xupeng1, SUN Weiping2, WEI Meng2, YANG Yong1   

  1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
    2. China Aviation Industry General Aircraft Institute Co., Ltd., Zhuhai 519040, China
  • Received:2018-05-15 Revised:2018-06-14 Online:2019-01-15 Published:2018-07-13

Abstract: An actuator disk method is coupled with the dynamic two-phase flow solver in OpenFOAM. A numerical study is conducted for the dynamic characteristics of an amphibious aircraft with four turboprop engines during taxiing at high speed on water. Considering the particularity of amphibious aircraft, the effects of hydrodynamics, aerodynamics, slipstream of propellers together with the ground effect of water are studied simultaneously by simulating the instantaneous state when the aircraft is about to leave water. Firstly, to simulate the slipstream of propellers during takeoff, an actuator disk code is added in interDyMFoam solver, which greatly improves the efficiency of computation compared with the direct simulation of propeller rotation.The momentum generated by the rotation of the propeller is injected into the flow field in the form of volume force to simulate the dynamic effect of the slipstream of the large thrust during the aircraft takeoff process. Secondly, both the hydrodynamic calculation ability of OpenFOAM and the newly added actuator disk are validated through the Wigley model of towing tank test and the single propeller wind tunnel test. At last, the characteristics of hydrodynamics and aerodynamics of amphibious aircraft taxiing at high speed on water are analyzed by the coupled solver and the thrust of power combined with slipstream effect is investigated as well.

Key words: OpenFOAM, two-phase flow, actuator disk, amphibious aircraft, slipstream

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