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Analyses and Solutions of Specific Cases in Spatial Angles Calculation
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作者 ZHANG Ai-mei QIU Yi SUN Bo-lu FANG Dong-yang 《Computer Aided Drafting,Design and Manufacturing》 2006年第1期57-62,共6页
Aiming at the specific cases existing in spatial angles calculation the paper investigates five types of them: lines in specific orientations, planes in specific orientations, two lines defining a plane and angles be... Aiming at the specific cases existing in spatial angles calculation the paper investigates five types of them: lines in specific orientations, planes in specific orientations, two lines defining a plane and angles between them, orientations and relevant parameters of a line lying on a plane, and orientations and relevant parameters of a plane passing through a line. The results are presented. The strategy presented provides a firm theoretic basis for the application of the new method of spatial angles calculations. 展开更多
关键词 engineering graphics spatial angles automatic calculation specific cases
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A LATTICE BOLTZMANN MODEL FOR COMPRESSIBLE PERFECT GAS 被引量:4
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作者 胡守信 阎广武 施卫平 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 1997年第3期218-226,共9页
A new lattice Boltzmann model for compressible perfect gas is proposed. The numerical example shows that it can be used to simulate shock wave and contact discontinuity. The results are comparable with those obtained ... A new lattice Boltzmann model for compressible perfect gas is proposed. The numerical example shows that it can be used to simulate shock wave and contact discontinuity. The results are comparable with those obtained by traditional methods. The ratio of specific heats gamma may be chosen according to the requirement of problems. 展开更多
关键词 lattice Boltzmann method COMPRESSIBLE perfect gas general case of the ratio of specific heats two-speed three-energy-level model
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