| 轴对称及二元喷管RCS的数值模拟 |
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| 引用本文： | 杨涛,杨青真,李岳锋.轴对称及二元喷管RCS的数值模拟[J].航空动力学报,2011,26(8):1819-1823. |
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| 作者姓名： | 杨涛 杨青真 李岳锋 |
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| 作者单位： | 西北工业大学动力与能源学院,西安,710072 |
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| 摘 要： | 利用物理光学迭代法独立设计程序，采用前后向算法并结合欠松弛因子加速收敛，提高运算效率．通过计算简单标准模型的雷达散射截面（RCS）验证了程序的可靠性．在此基础上，对两种不同宽高比二元喷管简化模型及轴对称喷管简化模型的RCS进行了计算并加以分析比较．结果表明，程序具有较好的计算精度和通用性，在较大范围的姿态角内，二元喷管简化模型的RCS高于轴对称喷管简化模型的RCS．
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| 关 键 词： | 物理光学迭代法 雷达散射截面 二元喷管 轴对称喷管 欠松弛因子 |
| 收稿时间： | 2010/9/15 0:00:00 |
| 修稿时间： | 1/4/2011 12:00:00 AM |
Numerical simulation of RCS for axisymmetric nozzles and symmetrical two-dimensional nozzle |
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| YANG Tao,YANG Qing-zhen and LI Yue-feng.Numerical simulation of RCS for axisymmetric nozzles and symmetrical two-dimensional nozzle[J].Journal of Aerospace Power,2011,26(8):1819-1823. |
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| Authors: | YANG Tao YANG Qing-zhen and LI Yue-feng |
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| Institution: | School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China;School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China;School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China |
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| Abstract: | The iterative physical optic method was used for the programming code to calculate radar cross section (RCS),while the forward-backward algorithm combined with relaxation factor was used to accelerate the convergence and improve operation efficiency.Some sample standard models were calculated to validate the reliability of the code;based on this,the RCS of two-dimensional(2-D) nozzles with different aspect ratios and an axisymmetric nozzle was computed and compared.According to the numerical results,this procedure has high accuracy and versatility,and the RCS of the 2-D nozzle is higher than that of the axisymmetric nozzle in the large angular range. |
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| Keywords: | iterative physical optic (IPO) approach radar cross section(RCS) two-dimensional nozzle axisymmetric nozzle under-relaxation factors |
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