Numerical simulation of 3D foil with trailing vortex sheet rollup

作者：Cai H P; Su Y M^*; Li X; Shen H L

来源：Journal of Dalian Maritime University, 2009, 35(2): 136-140.

• Attenuation function
• Foil
• Limited radius vortex core
• Vortex sheet rollup

To make wake rollup more actual, the attenuation function and limited radius vortex core were introduced to express the attenuating and diffusing impact of fluid viscosity respectively on vortex sheet when the induced velocity was calculated. The induced velocity of singular points was calculated by analytic formula of surface panel method. The dipole was replaced by vortex ring in the near field of the dipole, and the geometry of vortex sheet rollup was determined by the kinematic condition on vortex sheet. Numerical simulation results show that there is an optimum value of limited radius vortex core, the attenuation function can make rollup closer to experimental results, and curve fitting method for obtaining the attenuation function is feasible.

• 出版日期2009
• 单位哈尔滨工程大学