| 烧蚀外形计算的一种自动调节人工粘性项的差分格式 |
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| 引用本文： | 杨茂昭.烧蚀外形计算的一种自动调节人工粘性项的差分格式[J].宇航学报,1988(3). |
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| 作者姓名： | 杨茂昭 |
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| 作者单位： | 中国气动力研究与发展中心 |
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| 摘 要： | 在再入端头烧蚀外形计算中,通过对物形参数的自动滤波处理,构造出了一种附加人工粘性项三层显式差分格式。这种格式在外形变化波动区达一阶精度,在外形变化平稳区达二阶精度。数值试验表明,这种格式在保障外形计算精度和增大时间步长、节省计算机时都是有效的。
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| 关 键 词： | 烧蚀头锥 再入加热 气动力外形 有限差分 |
A DIFFERENCE SCHEME WITH AUTOCONTROL ARTIFICIAL VISCOSITY TO PREDICT ABLATED NOSETIP SHAPE |
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| Yang Maozhao.A DIFFERENCE SCHEME WITH AUTOCONTROL ARTIFICIAL VISCOSITY TO PREDICT ABLATED NOSETIP SHAPE[J].Journal of Astronautics,1988(3). |
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| Authors: | Yang Maozhao |
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| Institution: | China Aerodynamic Research and Development Centre |
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| Abstract: | The trio-layer explicit difference scheme which is added artificial visco- sity item is found by using filteration in the computation of ablated nosetip shape. The scheme is of first order accuracy in region where shape change is wavy and second order accuracy in region where is Smooth. Numerical experiments show that the scheme developed is effective. |
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| Keywords: | Ablative nose cone Reentry heating Aerodynamic shape Finite difference theory |
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