Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Advances in Aeronautical Science and Engineering》 2014-03
Add to Favorite Get Latest Update

A Quick Method of Flow Field Prediction Based on Proper Orthogonal Decomposition

Luo Jie;Duan Yanhui;Cai Jinsheng;School of Aeronautics,Northwestern Polytechnical University;  
For aircraft aerodynamic design,the high cost and time wasting of experiment and CFD on obtaining flow field data make it hardly to meet the requirement for aircraft design.By using the proper orthogonal decomposition(POD)combined with interpolation,the flow field data for aircraft design can be quickly got with only a small amount of sample flow fields obtained from experiment or CFD.Firstly,it is proved that the interpolation of the POD base coefficient is equivalent to the direct interpolation of sample flow fields on the prediction of flow fields,and the requirements on distribution of sample flow fields are analyzed.Then,Choosing three-element airfoil as the study object,the prediction of flow fields on given state through the combination of POD with cubic spline interpolation and radial basis function interpolation is carried out.Finally,the prediction flow fields are compared with the flow fields obtained direct from CFD under the same state,and the properties of POD reduced-order model combined with those two interpolation method are showed respectively.
【CateGory Index】: V221.3
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved