FluSI: A NOVEL PARALLEL SIMULATION TOOL FOR FLAPPING INSECT FLIGHT USING A FOURIER METHOD WITH VOLUME PENALIZATION
FluSI: A NOVEL PARALLEL SIMULATION TOOL FOR FLAPPING INSECT FLIGHT USING A FOURIER METHOD WITH VOLUME PENALIZATION
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DOI：
10.1137/15m1026006
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发表时间：
2016-01-01
影响因子：
3.1
通讯作者：
Sesterhenn, Joern
中科院分区：
文献类型：
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作者：
Engels, Thomas;Kolomenskiy, Dmitry;Sesterhenn, Joern
我们介绍FluSI，一个完全并行的开源软件包的伪谱模拟三维扑翼飞行粘性流。它可以从GitHub（https：//github.com/pseudospectators/FLUSI）免费获得，用于非商业用途。计算框架在具有分布式存储器架构的高性能计算机上运行。三维不可压Navier-Stokes方程的离散是基于自适应时间推进的Fourier拟谱方法。采用体积惩罚法处理了具有刚性扑翼的昆虫的复杂时变几何形状。描述了昆虫几何学、飞行力学和翅膀运动学的模块特征。不同基准的验证测试说明了该方法的效率和精度。最后，一个模型昆虫在湍流制度的计算证明了该软件的多功能性。
We introduce FluSI, a fully parallel open source software package for pseudospectral simulations of three-dimensional flapping flight in viscous flows. It is freely available for noncommercial use from GitHub (https://github.com/pseudospectators/FLUSI). The computational framework runs on high performance computers with distributed memory architectures. The discretization of the three-dimensional incompressible Navier-Stokes equations is based on a Fourier pseudospectral method with adaptive time stepping. The complex time varying geometry of insects with rigid flapping wings is handled using the volume penalization method. The modules characterizing the insect geometry, flight mechanics, and wing kinematics are described. Validation tests for different benchmarks illustrate the efficiency and precision of the approach. Finally, computations for a model insect in the turbulent regime demonstrate the versatility of the software.