Immersogeometric analysis of compressible flows with application to aerodynamic simulation of rotorcraft
Immersogeometric analysis of compressible flows with application to aerodynamic simulation of rotorcraft
复制标题
可压缩流的浸没几何分析及其在旋翼机空气动力仿真中的应用
DOI：
10.1142/s0218202519410033
复制
发表时间：
2019
影响因子：
3.5
通讯作者：
M. Hsu
中科院分区：
文献类型：
--
作者：
Fei Xu;Y. Bazilevs;M. Hsu
提出了一种浸没几何分析(IMGA)方法来模拟复杂几何形状的可压缩流动。在该方法中，可压缩流动模拟直接在机械设计的各种边界表示(B-REP)上进行，绕过了复杂几何模型的劳动强度和耗时的清理。提出了一种在非贴体网格背景下弱施加本质边界条件的新公式。该公式使用了非对称Nitsche方法，特别是当惩罚参数难以估计时，该方法具有良好的性能。我们在大范围的雷诺数和马赫数的基准问题上测试了所提出的浸没几何公式，显示了它的稳健性和准确性。最后，将该方法应用于UH-60黑鹰直升机前飞仿真，验证了该方法能够通过高保真气动分析来支持实际工程系统的设计。
We present an immersogeometric analysis (IMGA) approach for the simulation of compressible flows around complex geometries. In this method, compressible flow simulations are performed directly on various boundary representations (B-reps) of mechanical designs, circumventing the labor-intensive and time-consuming cleanup of complex geometric models. A new formulation for the weak imposition of essential boundary conditions in the context of non-body-fitted meshes is proposed. The formulation employs the non-symmetric Nitsche method, which yields good performance especially when the penalty parameters are difficult to estimate. We test the proposed immersogeometric formulation on benchmark problems for a wide range of Reynolds and Mach numbers, showing its robustness and accuracy. Finally, the methodology is applied to the simulation of a UH-60 Black Hawk helicopter in forward flight, illustrating the ability of the proposed approach to support the design of real-world engineering systems through high-fidelity aerodynamic analysis.
DOI：
10.1016/j.cma.2014.10.040
发表时间：
2015-02-01
影响因子：
7.2
作者：
Kamensky D;Hsu MC;Schillinger D;Evans JA;Aggarwal A;Bazilevs Y;Sacks MS;Hughes TJ
通讯作者：
Hughes TJ
影响因子：
1.5
作者：
Wang C;Xu F;Hsu MC;Krishnamurthy A
通讯作者：
Krishnamurthy A