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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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化工计算传质学的一个改进模型
DOI: 10.3969/j.issn.1671-7627.2006.01.002, PP. 5-10
Keywords: 计算传质学,(c2)-εc模型,湍流传质扩散系数,模拟,筛板塔
Abstract:
计算传质学模型由浓度输运方程及其封闭方程和相应的计算流体力学模型组成.使用这一模型可同时计算出湍流传质扩散系数、三维浓度场和速度场分布.但刘伯潭提出的传质封闭方程c2-εc模式,形式复杂而且其模型常数均直接借鉴于传热研究;此外,由于计算流体力学模型对最终浓度场的预测结果有着重要的影响,所以有对其进一步改进的必要.文中对传质封闭方程进行了简化并重新确定了模型常数,而且对计算流体力学模型进行了改进使其预测结果与文献中的实验值符合得更好.通过与文献中的湍流传质扩散系数及浓度值的比较,证明了这一简化的可行性.
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