第二代低阶面元法及在动力短舱上的应用

SECOND GENERATION LOW ORDER PANEL METHOD AND ITS APPLICATION FOR A CASE OF NACELLE

在气动力设计和计算中,面元法是主要实用计算方法之一。新近发展的第二代低阶面元法实用性强和计算精度较高。本文介绍了该面元法的理论,通过对比早期面元法,着重探讨了第二代低阶面元法的特点及其优越性。运用自行研制的计算程序,对低速动力短舱进行了计算和分析研究,结果表明与国外资料所提供的计算结果吻合得较好。

In the process of aerodynamical design panel method is one of the main Computing tools. The basic theory of Second generation low order panel method is presented and calculated results for a case of nacelle are shown. It is demonstrated that present low order method gives comparable accuracy to the high order solutions. It is also shown that problems associated with some earlier low order,e. g. ,leakage in internal flows,do not appear in the present method. Meanwhile,the method has very low computing costs and thus has made it practical for application to complex configuration.