【摘要】：兩相湍流場方程模型采用基于Euler方法的一階矩方程,而二階矩方程由Lagrange方法得到,新模型的封閉不需要附加其它假設(shè).首先基于概率密度函數(shù)給出顆粒運動的連續(xù)方程和動量方程,其次由基于平均Langevin方程的Lagrange模型推導得到顆粒二階矩方程,最終獲得封閉的二階矩模型.將新模型用于氣固兩相壁面射流的數(shù)值模擬,結(jié)果表明新模型合理有效.
[Abstract]:The two-phase turbulent field equation model adopts the first-order moment equation based on the Euler method, while the second-order moment equation is obtained by the Lagrange method. The closure of the new model does not require any other assumptions. Firstly, the continuous equation and momentum equation of particle motion are given based on the probability density function. Secondly, the second moment equation of particles is derived from the Lagrange model based on the average Langevin equation, and the closed second moment model is obtained. The new model is applied to the numerical simulation of gas-solid two-phase wall jet. The results show that the new model is reasonable and effective.
【作者單位】： 南京理工大學能源與動力工程學院;杭州電子科技大學能源研究所;
【基金】：國家自然科學基金(51176044) 浙江省自然科學基金(Y1110620)資助項目
【分類號】：O357.5
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本文編號：2167914