Aerodynamic Noise Prediction Using Grey Model

摘要：

In this paper, two methods are described to predict the aerodynamic noise induced by flow around a cylinder using the linear model GM (1, 1) and the nonlinear model Verhult based on grey system theory. The grey prediction initial data is from large eddy simulation and acoustic analogy. The prediction results using the model GM(1, 1) are respectively compared to the numerical simulation results and experiment data. The errors are less than 0.92％ and 5.53％ in the later. The prediction results based on the nonlinear model Verhulst are respectively compared to the numerical simulation results and experiment data. The errors are less than 0.61％ and 4.54％ respectively. It is shown that two methods using the grey models have good forecasting accuracy and excellent applicability to predict the noise induced by flow around a cylinder.

关键词： large eddy simulation(LES) acoustic analogy the model GM(1 1) the model verhulst

作者: Long Shuangli Nie Hong Li Lei Xu Xin

作者单位: Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight vehi MOE Key Lab of Structure Mechanics and Control for Aircraft Nanjing University of Aeronautics & Astr

会议类型: 国际会议

会议名称: The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

会议地点: 太原

会议语种:英文

页码: 130-134

在线出版日期: 2010-10-22（万方平台首次上网日期，不代表论文的发表时间）