不同相间作用下方管两相湍流直接数值模拟

doi:10.11949/0438-1157.20250488

化工学报 ›› 2025, Vol. 76 ›› Issue (11): 5730-5738.DOI: 10.11949/0438-1157.20250488

• 专栏：能源利用过程中的多相流与传热 • 上一篇

不同相间作用下方管两相湍流直接数值模拟

尚海洋¹(), 姚军¹(), 赵彦琳¹, 陈昇², 何萌²

^1.中国石油大学（北京）机械与储运工程学院，清洁能源科学与技术国际联合实验室，过程流体过滤与分离技术北京市重点实验室，北京 102249
^2.国家市场监督管理总局技术创新中心（炼油与化工装备风险防控），中国特种设备检测研究院，北京 100029

收稿日期:2025-05-06 修回日期:2025-06-14 出版日期:2025-11-25 发布日期:2025-12-19
通讯作者: 姚军
作者简介:尚海洋（2001—），男，硕士研究生，1393439780@qq.com
基金资助:
国家自然科学基金项目(12372255);国家自然科学基金项目(52376156)

Direct numerical simulation of two-phase turbulence in a square duct under different interphase interactions

Haiyang SHANG¹(), Jun YAO¹(), Yanlin ZHAO¹, Sheng CHEN², Meng HE²

^1.International Joint Laboratory on Clean Energy Science and Technology, Beijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China
^2.Technology Innovation Center of Risk Prevention and Control of Refining and Chemical Equipment, State Administration for Market Regulation, China Special Equipment Inspection and Research Institute, Beijing 100029, China

Received:2025-05-06 Revised:2025-06-14 Online:2025-11-25 Published:2025-12-19
Contact: Jun YAO

摘要/Abstract

摘要：

基于Nek5000求解器使用双向及四向的直接数值模拟耦合拉格朗日颗粒跟踪方法（DNS-LPT），对方管颗粒两相湍流进行了探究，与单向耦合相比，双向耦合和四向耦合作用会减小流体的平均速度，真实反映流场湍流强度。对于颗粒相，双向耦合促进颗粒在壁面的聚集行为，增加核心区域较高惯性颗粒（St⁺≥25）的流向速度，四向耦合抑制近壁面区域高惯性颗粒（St⁺≥25）的聚集性，增加该区域颗粒的流向速度。

关键词: 方管, 多相流, 湍流, 颗粒, 直接数值模拟

Abstract:

This study investigates two-phase turbulent flow in square tubes using the Nek5000 solver using two-way and four-way direct numerical simulation coupled Lagrangian particle tracking (DNS-LPT). Compared with one-way coupling, two-way and four-way coupling reduce the average velocity of the fluid and accurately reflect the turbulence intensity of the flow field. For the particle phase, two-way coupling promotes particle accumulation near the wall and increases the streamwise velocity of high-inertia particles (St⁺ ≥25) in the core region. Four-way coupling suppresses the accumulation of high-inertia particles (St⁺≥25) near the wall and increases their streamwise velocity in that region.

Key words: square duct, multiphase flow, turbulent flow, particle, direct numerical simulation

中图分类号:

TQ 028.8

尚海洋, 姚军, 赵彦琳, 陈昇, 何萌. 不同相间作用下方管两相湍流直接数值模拟[J]. 化工学报, 2025, 76(11): 5730-5738.

Haiyang SHANG, Jun YAO, Yanlin ZHAO, Sheng CHEN, Meng HE. Direct numerical simulation of two-phase turbulence in a square duct under different interphase interactions[J]. CIESC Journal, 2025, 76(11): 5730-5738.

图/表 6

图1 (a) 方管几何结构示意图和对应坐标系；(b) 方管湍流计算网格示意图

Fig.1 (a) Schematic of the square duct geometry and the corresponding coordinate; (b) Computational mesh for the present square duct flow

表1 颗粒相模拟参数

Table 1 Simulation parameters for the particulate phase

St⁺	$ρ p *$	$d p *$	Δt^*
0.31	2.5	0.005	0.002
25	200	0.005	0.002
125	1000	0.005	0.002
260	2076	0.005	0.002

表1 颗粒相模拟参数

Table 1 Simulation parameters for the particulate phase

St⁺	$ρ p *$	$d p *$	Δt^*
0.31	2.5	0.005	0.002
25	200	0.005	0.002
125	1000	0.005	0.002
260	2076	0.005	0.002

图2 方管流场验证：(a)平均流向速度；(b)脉动速度均方根；(c)二次流矢量图；(d)不同相间作用条件下流体相的平均流向速度沿壁面平分线的分布（St+=0.31）

Fig.2 Flow field validation of a square duct: (a) average flow velocity; (b) root mean square of pulse velocity; (c) secondary stream vector diagram; (d) profiles of mean flow streamwise velocity along the wall bisector under the different interphase conditions (St+=0.31)

图3 不同相间作用下流体相r.m.s.速度沿壁面平分线分布对比

Fig.3 Comparison of the flow r.m.s. velocities along the wall bisector under different interphase conditions

图4 不同相间作用下横截面平均颗粒浓度（对数值）沿壁面平分线的对比

Fig.4 Comparisons of average cross-sectional particle concentration (logarithmic values) along wall bisector under different interphase conditions

图5 不同相间作用下颗粒平均流向速度沿壁面平分线的分布对比

Fig.5 Comparisons of mean streamwise velocity along wall bisector under different interphase conditions:

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不同相间作用下方管两相湍流直接数值模拟

Direct numerical simulation of two-phase turbulence in a square duct under different interphase interactions

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