南京航空航天大学学报2018，Vol.50Issue(3)：362-366,5.DOI:10.16356/j.1005-2615.2018.03.011
基于Euler方程解摄动的超声速旋转导数计算方法
Computational Method of Supersonic Rotary Derivatives Based upon Perturbation on Euler Equation Solution
摘要
Abstract
A method for rapid computation of supersonic rotary derivatives is developed .It is based upon perturbation relation between rotary derivatives and normal velocity on surface due to angular velocity according to Riemann invariant and Euler equations solution using Cartesian meshes .T he resulting for-mula of supersonic rotary derivatives depends only on steady Euler solution of the basic flow ,therefore , all supersonic rotary derivatives of interest can be obtained at the same time after obtaining the CFD steady-state Euler solutions .The international dynamic derivatives standard model ″Basic Finner″ is studied as an example to validate the method .The calculating results are in agreement well with experi-mental data and reference data appeared in open literature .It is proved that the proposed method has less runtime ,higher accuracy and better practicability in engineering ,and can be used to rapidly calcu-late the supersonic rotary derivatives of flying vehicles with complicated configurations due to using Eul-er solutions of Cartesian meshes .关键词
超声速/旋转导数/动导数/Euler方程/笛卡尔网格Key words
supersonic/rotary derivatives/dynamic stability derivatives/Euler equations/Cartesian me-shes分类
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唐海敏,傅建明,伍彬,李欣益..基于Euler方程解摄动的超声速旋转导数计算方法[J].南京航空航天大学学报,2018,50(3):362-366,5.
