CAJ | 학술논문

以尿素造粒过程的原理为基础，采用Fluent软件对尿素造粒塔内热环境进行数值模拟。连续相采用欧拉方法，分散相采用拉格朗日法，连续相与分散相进行耦合计算。在物性参数的设置中，尿素采用修改比热容的方法，空气的自然对流采用波西涅斯克(Boussinesq)假设。分析得到造粒塔内空气温度速度分布。得出空气在造粒塔内的速度和温度在造粒塔内的变化情况。
이뇨소조립과정적원리위기출，채용Fluent연건대뇨소조립탑내열배경진행수치모의。련속상채용구랍방법，분산상채용랍격랑일법，련속상여분산상진행우합계산。재물성삼수적설치중，뇨소채용수개비열용적방법，공기적자연대류채용파서열사극(Boussinesq)가설。분석득도조립탑내공기온도속도분포。득출공기재조립탑내적속도화온도재조립탑내적변화정황。
On the basis of urea prilling principle, Fluent software was used to numerically simulate the internal environment in urea prilling tower. Euler's method was used to simulate continuous phase, Lagrange method was used to simulate the dispersed phase, and then coupling calculation of continuous phase and dispersed phase was carried out. In setting of physical parameters, modifying specific heat capacity method used for urea, Boussinesq method was used for natural convection of air. Temperature distribution and velocity distribution of air in the prilling tower were obtained as well as change of temperature and velocity of air in the prilling tower.