| 基于N—S方程的地面效应数值模拟研究 |
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| 引用本文： | 岳锋,石亚军,李凤蔚.基于N—S方程的地面效应数值模拟研究[J].航空计算技术,2005,35(2):62-65. |
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| 作者姓名： | 岳锋 石亚军 李凤蔚 |
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| 作者单位： | 1. 西北工业大学,航空学院,陕西,西安,710072
2. 中国船舶科学研究中心,江苏,无锡,214082 |
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| 摘 要： | 研究了二维翼型在两种不同地面条件-移动地面和固定地面条件下的地面效应及流动特性问题。其中流场分析采用了不可压缩RANS方程,湍流模型采用Spalart-Allmaras一方程湍流模型。通过对NACA4412翼型在两种不同的地面条件及不同迎角和不同地面高度情况下的绕流计算,结果表明,在两种不同的地面条件下,升力及力矩的差别较小,而固定地面条件的阻力略小于移动地面条件下的阻力。
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| 关 键 词： | 二维翼型 地面效应 固定地面 移动地面 |
| 文章编号： | 1671-654X(2005)02-0062-04 |
| 修稿时间： | 2005年3月11日 |
Simulation of Wing in Ground Effect Based on N-S Equations |
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| YUE Feng,SHI Ya-jun,Li Feng-wei.Simulation of Wing in Ground Effect Based on N-S Equations[J].Aeronautical Computer Technique,2005,35(2):62-65. |
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| Authors: | YUE Feng SHI Ya-jun Li Feng-wei |
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| Institution: | YUE Feng~1,SHI Ya-jun~2,LI Feng-wei~1 |
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| Abstract: | the purpose of this paper is to clarify the two-dimension ground effect and it flows characteristics due to different ground boundary conditions, i. e., moving and fixed bottom boundary. Turbulent flows around two-dimension wing in ground(WIG) effect are analyze with incompressible RANS equations. The Spalart-Allmaras turbulent model is use to simulate high Reynolds flows. Data for NACA4412 section is calculated for various ground clearances with two bottom conditions, different attack angle and different height above ground. According to the computational result, the differ lift and moment simulated by two bottom conditions is negligible, but the drag force simulate by the fixed bottom is to some extent smaller than that by moving one. |
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| Keywords: | two dimension wing ground effect fixed bottom boundary moving bottom boundary |
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