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The surface panel method has been applied to predict the hydrodynamic performance of highly skewed propeller.The surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and do
中文意思:
采用面元法预报大侧斜螺旋桨水动力性能,螺旋桨表面及尾涡面离散为四边形双曲面元,每个面元上布置等强度源汇和偶极子分布.对于大侧斜螺旋桨而言,桨叶表面采用常规的等半径网格划分方法在近叶梢处将导致大展弦比、大侧斜和扭曲面元,这容易使桨叶表面速度的计算结果不正确,甚至会导致迭代过程发散及计算失败.文中建立了一种“非常规网格”划分方法,能有效地解决大侧斜螺旋桨的计算和收敛问题.桨叶随边处通过迭代实现非线性等压库塔条件.


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The surface of the moon is pitted with craters. 月球表面因有环形山而变得坑坑洼洼。
The surface of the wood was pitted with holes made by insects. 那块木头的表面被昆虫蛀了一个个的洞。
The surface of ultrafine TiO2 is treated with aluminium zirconium organic metal coupling agent. 摘要利用铝锆有机金属偶联剂对超微二氧化钛粉体进行表面改性。
The surface often has a soapy feel. 抚摸表面,感觉比较平滑。
The surface on the far left shows ulceration and hemorrhage. 最左面显示了溃疡和出血。
The surface panel method has been applied to predict the hydrodynamic performance of highly skewed propeller.The surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and do 采用面元法预报大侧斜螺旋桨水动力性能,螺旋桨表面及尾涡面离散为四边形双曲面元,每个面元上布置等强度源汇和偶极子分布.对于大侧斜螺旋桨而言,桨叶表面采用常规的等半径网格划分方法在近叶梢处将导致大展弦比、大侧斜和扭曲面元,这容易使桨叶表面速度的计算结果不正确,甚至会导致迭代过程发散及计算失败.文中建立了一种“非常规网格”划分方法,能有效地解决大侧斜螺旋桨的计算和收敛问题.桨叶随边处通过迭代实现非线性等压库塔条件.
The surface reflection was done very simply. 现在表面的反射和折射效果看起来太简单了。
The surface restoration layer of a gear wheel, which had run in lubricating oil with PBC restoration agent was analyzed using TEM, SEM, XPS, AES and Raman; and the mechanism of reducing friction of the restoration agent was studied. 以透射电镜、X射线光电子能谱仪、俄歇电子能谱仪和拉曼光谱仪分析了在添加摩圣修复剂的润滑油中运行过的齿轮表层,对摩圣修复剂的减摩机理进行了分析。
The surface roasts a pair of light with second layers to gather the cosmetics end TU2 CENG2 purely, having anti ultraviolet ray and bearing aging,not cracked,constant the function of the color,can have erosion of resist the sandstorm,rain water most effec 表面烤有双层亚光纯聚脂粉末涂层,具有抗紫外线、耐老化、不龟裂、不变色的性能、能最有效有抵御风沙、雨水的侵蚀。
The surface roughness comparison specimens are used to calibrate the surface roughness of workpieces by comparison. They are widely used in machinery industry. 表面粗糙度比较样块是用比较法检查零件表面粗糙度的一种量具,在机械工业生产中得到广泛的应用。
The surface semi-conducting layer is widely used to control the electric field and suppress the surface corona discharge in both HV power cable termination and the end turns of HV generator stator winding. 摘要表面半导电层结构可以均匀电场和抑制表面电晕放电,因此被广泛应用于高压电力电缆接头和高压发电机定子线圈端部绝缘中。
 
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