| 复杂外形下的无网格算法研究 |
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| 引用本文： | 蒋超奇,王刚,叶正寅.复杂外形下的无网格算法研究[J].航空计算技术,2005,35(3):29-33. |
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| 作者姓名： | 蒋超奇 王刚 叶正寅 |
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| 作者单位： | 西北工业大学,翼型叶栅空气动力学国防重点实验室,陕西,西安,710072;西北工业大学,翼型叶栅空气动力学国防重点实验室,陕西,西安,710072;西北工业大学,翼型叶栅空气动力学国防重点实验室,陕西,西安,710072 |
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| 摘 要： | 研究了二维、三维复杂外形下的无网格算法。在一种布置点云方法的基础上,发展一种曲面拟合的重构方式构造流场物理量,并应用于AUSM+_up格式计算欧拉方程的数值通量;计算采用了隐式时间推进,并引入当地时间步长和残值光顺等加速收敛措施。通过对某三段翼型低速流动、M6机翼跨音速流动、某全机跨音速流动进行了数值模拟,表明本文发展的无网格算法能有效地模拟复杂外形的无粘绕流。
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| 关 键 词： | 无网格 Euler方程 AUSM+_up格式 点云 复杂外形 |
| 文章编号： | 1671-654X(2005)03-0029-05 |
| 修稿时间： | 2005年3月21日 |
The Study of Gridless Method for Complex Shape Flow Calculation |
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| JIANG Chao-qi,WANG Gang,YE Zheng-yin.The Study of Gridless Method for Complex Shape Flow Calculation[J].Aeronautical Computer Technique,2005,35(3):29-33. |
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| Authors: | JIANG Chao-qi WANG Gang YE Zheng-yin |
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| Abstract: | In this paper,a gridless method for 2-D and 3-D complex shape flow calculation is investigated.On the base of the distributed clouds of points,a least-squares fitting and the AUSM+_up scheme is used to obtain the numerical flux.An implicit algorithm is used to advanced the flow equations in time,at the same time local time stepping technique and residual averaging are employed.In order to demonstrate the accuracy and rudeness of the method,some multi-element airfoil in subsonic flow,M6 wing in transonic flow,and some plane in transonic flow are computed.The compute result demonstrate that the greedless method in this paper can be good for simulation of complex shape flow. |
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| Keywords: | gridless Euler equations AUSM~+_up scheme clouds of points complex shape |
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