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力学与实践 ›› 2014, Vol. 36 ›› Issue (5): 574-579,565.doi: 10.6052/1000-0879-14-012

• 应用研究 • 上一篇    下一篇

成品油管道顺序输送二维模型优化求解

郑劼恒1, 蒋明1,2   

  1. 1. 后勤工程学院军事供油工程系, 重庆 401331;
    2. 国家救灾应急装备工程技术研究中心, 重庆 401331
  • 收稿日期:2014-01-10 修回日期:2014-02-20 出版日期:2014-10-15 发布日期:2014-02-25
  • 通讯作者: 郑劼恒,硕士研究生,研究方向为顺序输送数值模拟.E-mail:327005868@qq.com E-mail:327005868@qq.com
  • 基金资助:

    后勤工程学院学术创新基金资助项目(YZ08-43601).

THE OPTIMAL SOLUTION FOR THE TWO-DIMENSIONAL CONVECTION-DIFFUSION MODEL IN BATCHING PRODUCT PIPELINE

ZHENG Jieheng1, JIANG Ming1,2   

  1. 1. Dept. of Petroleum Supply Engineering, Logistical Engineering University, Chongqing 401331, China;
    2. National Engineering Research Center for Disaster and Emergency Rescue Equipment, Chongqing 401331, China
  • Received:2014-01-10 Revised:2014-02-20 Online:2014-10-15 Published:2014-02-25

摘要:

将一种简化的自适应网格应用于顺序输送二维混油模型的计算中,网格的疏密程度由速度和浓度梯度控制且用动网格取代传统的固定网格。混油模型中采用混掺长度理论计算速度场和扩散系数,并考虑了油品黏度变化对混油的影响。提高传统数值解法的精度,减少计算量,使之适应于长输管线顺序输送的混油数值计算。通过在计算机上的数值模拟实验,证明了该方法的有效性,分析了雷诺数、输送顺序对混油的影响并得到混油随输送距离的变化规律。

关键词:

顺序输送|自适应网格|混油模型|数值计算

Abstract:

A simplified adaptive mesh method is applied to solve the two-dimensional convection -diffusion model of batching. In this method, the density of the mesh is controlled by the velocity and the concentration gradient, and the traditional fixed grid is replaced by the dynamic mesh. In the two-dimension model, the velocity field and the turbulent diffusion rate is derived based on the mixed length theory,with the consideration of the influence on the mixing oil by its viscosity variation. The goal is to improve the computation precision and reduce the calculation amount to make it suitable for batching simulations in long distance pipelines. The effectiveness of this method is verified by the comparative analysis of the numerical experiment. The numerical analysis shows how the Reynolds number, the product sequence and the transportation distance influence the results.

Key words:

batch transportation|adaptive mesh|model of batching contamination|numerical calculation

中图分类号: 

  • TE832