An improved method for calculating flow past flapping and hovering airfoils

被引：10
作者：
Sengupta, TK [1 ]
Vikas, V
Johri, A
机构：
[1] Indian Inst Technol, Dept Aerosp Engn, Kanpur 208016, Uttar Pradesh, India
[2] Indian Inst Technol, Dept Aerosp Engn, Kharagpur 741302, W Bengal, India
来源：
THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS | 2005年 / 19卷 / 06期
关键词：
stream function-vorticity formulation; pressure poisson equation; compact schemes; Navier-Stokes equation; unsteady aerodynamics; flapping and hovering flight;
D O I：
10.1007/s00162-005-0003-9
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A method is reported here for calculating unsteady aerodynamics of hovering and flapping airfoil for two-dimensional flow via the following improved methodologies: (a) a correct formulation of the problem using stream function (omega) and vorticity (omega) as dependent variables; (b) calculating loads and moment by a new method to solve the governing pressure Poisson equation (PPE) in a truncated part of the computational domain on a nonstaggered grid; (c) accurate solution using high accuracy compact difference scheme for the vorticity transport equation (VTE) and (d) accelerating the computations by using a high-order filter after each time step of integration. These have been used to solve Navier-Stokes equation for flow past flapping and hovering NACA 0014 and 0015 airfoils at typical Reynolds numbers relevant to the study of unsteady aerodynamics of micro air vehicle (MAV) and insect/bird flight.
引用
收藏
页码：417 / 440
页数：24
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