高效計算網(wǎng)格壁面距離的KD樹方法
發(fā)布時間:2018-09-05 09:28
【摘要】:計算流體動力學(xué)的一些領(lǐng)域中經(jīng)常要用到流場點到壁面的最小距離,為了提高壁面距離計算的精度和效率,將KD樹應(yīng)用于非結(jié)構(gòu)網(wǎng)格的壁面距離計算,計算了若干三維外形的壁面距離,結(jié)果表明:基于KD樹的網(wǎng)格壁面距離計算方法魯棒性好,計算效率和結(jié)果精度高,適應(yīng)復(fù)雜外形的能力強(qiáng);算法的通用性好,可以拓展應(yīng)用到多種網(wǎng)格類型。
[Abstract]:In order to improve the accuracy and efficiency of wall distance calculation, KD tree is applied to calculate the wall distance of unstructured grid in order to improve the accuracy and efficiency of wall distance calculation, in order to improve the accuracy and efficiency of wall distance calculation, the minimum distance between flow field point and wall surface is often used in some fields of computational fluid dynamics. The results show that the method based on KD tree has good robustness, high calculation efficiency and precision, strong ability to adapt to complex shapes, and good generality of the algorithm. Can be extended to a variety of grid types.
【作者單位】: 浙江大學(xué)航空航天學(xué)院;上海宇航系統(tǒng)工程研究所;
【基金】:國家重點基礎(chǔ)研究發(fā)展計劃資助項目(2014CB340201)
【分類號】:O35
[Abstract]:In order to improve the accuracy and efficiency of wall distance calculation, KD tree is applied to calculate the wall distance of unstructured grid in order to improve the accuracy and efficiency of wall distance calculation, in order to improve the accuracy and efficiency of wall distance calculation, the minimum distance between flow field point and wall surface is often used in some fields of computational fluid dynamics. The results show that the method based on KD tree has good robustness, high calculation efficiency and precision, strong ability to adapt to complex shapes, and good generality of the algorithm. Can be extended to a variety of grid types.
【作者單位】: 浙江大學(xué)航空航天學(xué)院;上海宇航系統(tǒng)工程研究所;
【基金】:國家重點基礎(chǔ)研究發(fā)展計劃資助項目(2014CB340201)
【分類號】:O35
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