Through mathematical models to the study of celestial collision with earth , the celestial collision probability formula is got 摘要通過數(shù)學模型研究地外天體撞擊地球的問題,得出地外天體撞擊地球的概率公式。
The radial distribution function was introduced in order to take into account the effect of the uneven local particle concentration on the particle collision probability 推導了高顆粒濃度氣固兩相流顆粒間碰撞概率的計算公式,引入徑向分布函數(shù)來考慮局部顆粒濃度不均勻性對顆粒碰撞概率的影響。
In the previous direct simulation monte carlo ( dsmc ) method used in the dilute gas - solid flow , particle collision probability was calculated by the equation used for rarefied gas molecules . and gas phase was simulated by the laminar navier - stokes equations 已有的應用直接模擬蒙特卡羅( dsmc )方法模擬流化床內稀疏氣固兩相流動的研究中,均采用稀薄氣體分子碰撞概率的計算方法計算氣固兩相流中顆粒的碰撞概率,采用層流navier - stokes方程模擬氣相流動。
Through defining collision probability , collision probability coefficient , minimum feasible probability , tiny probability and maximum feasible collision times , the method for calculating maximum delay of network is clarified with the concept of maximum feasible collision times . it is illustrated that maximum delay of ethernet becomes bigger with its load increase 定義了沖突概率、沖突概率系數(shù)、最小可能概率、微小概率、最大可能沖突次數(shù)等概念,用最大可能沖突次數(shù)這一概念,闡明了網(wǎng)絡最大延時的計算方法,并舉例說明了隨著網(wǎng)絡負荷的增加,網(wǎng)絡最大延時也相應的增大。
The result shows that argon gas can not only promote the excitation of plasma at low pressure , but also improve discharge state , increase the density and activation of reaction radical and improve the quality of diamond films . on the other side , argon can cool the plasma and maintain low temperature of substrate due to its big ionization section and high collision probability with gas molecules 結果表明,氣體系統(tǒng)中引入氬氣一方面不僅有利于維持低壓放電,而且改善放電狀態(tài),提高反應活性基濃度和活性,提高低溫沉積金剛石膜的質量;另一方面,由于其大的電離截面使其和電子碰撞的幾率大大提高,對等離子體進行冷卻,有利于基片溫度的降低。