The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
Numerical simulation of calcium carbonate particle deposition in circular tube
Author(s): 
Pages: 58-62
Year: Issue:  6
Journal: Chemical Engineering

Keyword:  particle depositionmodel studymechanism boundary;
Abstract: 采用雷诺应力模型和拉格朗日方法,研究水平圆管内碳酸钙颗粒析出后的趋壁沉积行为.研究发现,二维建模下采用Fluent计算流场脉动速度偏大,又由于颗粒沉积是三维上的不规律运动,所以采用二维模型模拟颗粒沉积并不准确.文中对碳酸钙颗粒沉积进行三维模拟,比较脉动速度模拟结果,证明三维模拟结果优于二维模拟结果,且在近壁区内十分接近DNS结果.在此基础上,模拟不同粒径(颗粒弛豫时间0.4-10)碳酸钙颗粒的沉积速度,结果与文献中实验和模拟结果符合良好,发现水中涡扩散影响区和颗粒惯性影响区分界对应的颗粒弛豫时间(文中约为4)小于气体中的分界(10-100).
Related Articles
No related articles found