前飞状态涵道尾桨气动特性CFD分析  

CFD Analysis for the Ducted Tail Rotor in Forward Flight

作　　者：宋长红[1] 林永峰[1] 陈文轩[1] 

机构地区：[1]中国直升机设计研究所,景德镇333001

出　　处：《直升机技术》2009年第2期30-34,共5页Helicopter Technique

摘　　要：本文利用CFD商业软件Fluent为平台,以动量源代替桨叶对流场的作用,通过编写UDF程序把动量源加入到N-S方程中。动量源方法的基本思想是利用作用力与反作用的规律,由于代表桨叶的薄圆柱体里的任一网格处动量源的表达式只与桨叶的几何参数与该网格的瞬时速度有关,从而建立了一套适合于悬停和前飞状态的能够实现尾桨和涵道相互耦合作用的CFD数值模拟方法。本文将在前面悬停流场模拟的基础上,进一步对前飞状态涵道尾桨系统的气动特性进行分析。The rotor is evaluated from two-dimensional airfoil tables as a function of local Mach number and angle-of-attack and applied as source terms added by UDF procedure in the discrete N-S equations based the CFD commercial software Fluent in this paper.Gravity centrifugal force and the other force of the rotor are not considered in this approach based on the law of force and counterforce,what the duct-rotor aerodynamic interaction is achieved.In this paper subsequent efforts are made to understand the flow fie...

关 键 词：CFD 涵道尾桨 动量源方法 相互耦合作用 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]