[1]陈良勇,段钰锋,刘猛,等.水平管入口段内水煤浆流动特性数值模拟[J].东南大学学报(自然科学版),2010,40(2):402-408.[doi:10.3969/j.issn.1001-0505.2010.02.036] 　Chen Liangyong,Duan Yufeng,Liu Meng,et al.Numerical study of developing coal-water slurry flow in entrance region of horizontal pipe[J].Journal of Southeast University (Natural Science Edition),2010,40(2):402-408.[doi:10.3969/j.issn.1001-0505.2010.02.036] 点击复制 水平管入口段内水煤浆流动特性数值模拟() 分享到： var jiathis_config = { data_track_clickback: true };

40

2010年第2期

402-408

2010-03-20

文章信息/Info

Title:
Numerical study of developing coal-water slurry flow in entrance region of horizontal pipe

1 东南大学能源与环境学院,南京 210096; 2 南京工业大学能源学院,南京 210009
Author(s):
1 School of Energy and Environment, Southeast University, Nanjing 210096, China
2 College of Energy, Nanjing University of Technology, Nanjing 210009, China

Keywords:

O373
DOI:
10.3969/j.issn.1001-0505.2010.02.036

Abstract:
An Eulerian multi-fluid flow model is developed to carry out a numerical study on coal-water slurry flow in the entrance region of horizontal pipe. The kinetic theory of granular flow is used to calculate constitutive equations of the solid-phase components and the RNG k-ε turbulent model is incorporated into the governing equation to model turbulent two phase flow with strong particle-particle interactions. In this model, the coal particles with bimodal distribution are considered as two solid-phase components and the moment exchange between solid and liquid phase as well as that between solid and solid phase are taken into account. The model was validated with Kaushal experimental data from available literature and the pressure gradient data by author’s experiments. The numerical investigations focus mainly on the developing processes of volume fraction and velocity distributions in the entrance region as well as the entry length. The results show that the gravitational force and the strong particle-particle interaction have significant effects on concentration and velocity distribution profile. The entry length decreases as solid concentration increases from 30% to 49.5% and for the same slurry, the entry length firstly increases and then decreases when the inlet velocity increases from 0.2 to 5.0 m/s.

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