收稿日期: 2015-03-18
网络出版日期: 2016-12-30
Simulation of slurry flow with high sediment concentration based on two-fluid model
Received date: 2015-03-18
Online published: 2016-12-30
梁成鹏, 陈红勋, 钱涛 . 双流体模型在高浓度含沙水流模拟中的应用[J]. 上海大学学报(自然科学版), 2016 , 22(6) : 753 -762 . DOI: 10.3969/j.issn.1007-2861.2015.01.007
Since sediment usually has a negative effect on hydropower project, it is necessary to develop appropriate methods to analyze sediment transport. Due to complexity of high concentration granular flow, a three dimensional two-fluid model was proposed to study slurry flows of both suspended load and traction load. The model took into account interaction between particles and water, as well as inter-particle collision and fluctuation of the two phase volume fraction. Numerical simulation of an open-channel sediment experiment of Coleman was used to validate the two-fluid model. Based on the model validation, the deposition effect of a specific desander was analyzed.
Key words： desander; numerical simulation; two-fluid model; high concentration
[1] 周志德. 浅谈泥沙研究的困难[J]. 中国水利水电科学研究院学报, 2009, 7(1): 33-36.
[2] 远航. 潮流与泥沙数值模拟回顾及进展[J]. 海洋科学进展, 2004, 22(1): 98-105.
[3] 陈鑫. 水沙两相紊流数学模型及其在近岸泥沙运动中的应用[D]. 北京: 清华大学, 2012: 1-2.
[4] Elghobashi S. On fredicting particle-Laden turbulent flows [J]. Applied Scientific Research, 1994, 52: 309-329.
[5] Lu H, He Y, Liu W, et al. Computer simulations of gas solid flow in spouted beds using kinetic frictional stress model of granular flow [J]. Chemical Engineering Science, 2004, 59(4): 865-878.
[6] 王学功. 水沙动力学适用牛顿流体的基本方程[J]. 泥沙研究, 2012(3): 1-3.
[7] Ding J M, Gidaspow D. A bubbling fluidisation model using kinetic theory of granular flow [J]. AIChE J, 1990, 36: 523-538.
[8] Lun C K K, Savage S B. The effects of an impact velocity dependent coefficient of restitution on stresses developed by sheared granular materials [J]. Acta Mechanica, 1986, 63: 15-44.
[9] Ljus C. On particle transport and turbulence modification in air-particle flows [D]. Goteborg: Chalmers University of Technology, 2000: 23-25.
[10] Benzarti S, Mhiri H, Bournot H. Drag models for simulation gas-solid flow in the bubbling fluidized bed of FCC particles [J]. World Academy of Science, Engineering and Technology, 2012(61): 1138-1143.
[11] Burns A D, Frank T, Hamill I, et al. The favre averaged drag model for turbulent dispersion in eulerian multi-phase flows [C]//5th International Conference on Multiphase Flow. 2004: 23-25.
[12] Coleman N L. Effects of suspended sediment on the open-channel velocity distribution [J]. Water Resources Research, 1986, 22(10): 1377-1384.
[13] 窦国仁. 紊流力学(下册) [M]. 北京: 高等教育出版社, 1987: 125-126.
/
| 〈 |
|
〉 |
