三维凹壁面切向射流流动特性分析

张静; 周圆圆; 龚斌; 李雅侠; 刘海良; 吴剑华

doi:10.11949/j.issn.0438-1157.20180836

您当前的位置：

首页 >

文章列表页 >

三维凹壁面切向射流流动特性分析

流体力学与传递现象 | 更新时间：2026-07-24

- 三维凹壁面切向射流流动特性分析
- Flow characteristics of three-dimensional concave-wall jet
- 化工学报 2019年70卷第4期页码：1340-1348
- 作者机构：
  
  1.天津大学化工学院，天津 300072
  2.沈阳化工大学辽宁省化工新技术转移推广中心，辽宁沈阳 110142
- 作者简介：
  
  张静（1971—），女，博士研究生，副教授，2501474185@qq.com
  吴剑华（1951—），男，硕士，教授，jianhuawu@163.com
- 基金信息：
  
  国家自然科学基金项目(51506133;21476142);辽宁省自然科学基金项目(201602595)
- DOI：10.11949/j.issn.0438-1157.20180836
  中图分类号： O 358
- 收稿：2018-07-23，
  
  修回：2019-01-25，
  
  网络首发：2020-06-15，
  
  纸质出版：2019-04-12
- 稿件说明：
移动端阅览
张静, 周圆圆, 龚斌, 李雅侠, 刘海良, 吴剑华. 三维凹壁面切向射流流动特性分析[J]. 化工学报, 2019, 70(4): 1340-1348

ZHANG Jing, ZHOU Yuanyuan, GONG Bin, LI Yaxia, LIU Hailiang, WU Jianhua. Flow characteristics of three-dimensional concave-wall jet[J]. CIESC Journal, 2019, 70(4): 1340-1348
张静, 周圆圆, 龚斌, 李雅侠, 刘海良, 吴剑华. 三维凹壁面切向射流流动特性分析[J]. 化工学报, 2019, 70(4): 1340-1348 DOI： 10.11949/j.issn.0438-1157.20180836.

ZHANG Jing, ZHOU Yuanyuan, GONG Bin, LI Yaxia, LIU Hailiang, WU Jianhua. Flow characteristics of three-dimensional concave-wall jet[J]. CIESC Journal, 2019, 70(4): 1340-1348 DOI： 10.11949/j.issn.0438-1157.20180836.

摘要

在立式圆筒体分层器内设置半圆形截面切向入口，形成三维凹壁面切向射流，以提高非均相物料机械分离效率。为了揭示三维凹壁面切向射流流动机理，利用示踪剂浓度实验和大涡模拟研究了凹壁面切向射流流动特性，并对浓度场沿流向和展向扩展进行了评价。研究结果表明，示踪剂浓度半值宽随着入口Reynolds数的提高扩展范围增加，流向扩展率为0.019～0.033，展向扩展率为0.079～0.161。在离心力作用下，入口周向60°范围内浓度半值宽沿流向收缩至射流宽度的2/3。圆筒体内壁面存在多个周向滚动发展的流向涡旋，但无展向涡旋。切向速度半值宽和涡量边界值在流向涡旋中心位置出现峰值，展向无明显波动。入口周向180°范围内，未发现二次流涡旋，沿射流流向的切向速度半值宽与圆筒体半径之比小于0.1，未达到离心不稳定性二次流的形成条件。凹壁面切向射流有效降低了涡旋对分层器内主流体的扰动。

Abstract

To improve the mechanical separation efficiency of the heterogeneous material

a semi-circular cross-section tangential inlet is arranged in the vertical cylindrical separator to form a three-dimensional concave-wall jet. The concave-wall jet flow characteristics are studied by tracer concentration experiment and large eddy simulation. The aim is to reveal the three-dimensional concave-wall jet flow mechanism. The concentration field spread is evaluated along the streamwise and spanwise flow. The results show that the half-value width of the tracer concentration increases with the increase of the inlet Reynolds number. The streamwise spread ratio is in the range of 0.019—0.033 and the spanwise spread ratio is in the range of 0.079—0.161. Under the action of centrifugal force

the concentration half-value width shrinks to 2/3 of the jet width within the scope of 60° in the inlet circumferential direction. There are several streamwise vortices developed from the inner surface of the cylinder

however no vortex along spanwise flow is found. The peak values of tangential velocity half-value width and the vorticity boundary locates at the center of the streamwise vortex. There is not obvious fluctuation in spanwise direction. Secondary flow vortex is not found in the range of 180° in the inlet circumferential direction. The reason is that the ratio of the tangential velocity half-value width to the cylindrical radius is less than 0.1 along streamwise flow. Thus the forming condition of the secondary flow that caused by centrifugal instability is not reached. The concave wall tangential jet effectively reduces the disturbance of the main fluid in the stratifier by the vortex.

关键词

Keywords

references

宋建勋 , 毕春江 . 一种油田注汽锅炉立式高干度汽水分离装置 : 201310322446.1 [P ] . 2013-10-09 .

Song J X , Bi C J . Vertical high-dry steam-water separation device for oil field steam injection boiler : 201310322446.1 [P ] . 2013-10-09 .

王吉时 . 油气分离器 : 201020249687.X [P ] . 2011-02-09 .

Wang J S . Oil and gas separator : 201020249687.X [P ] . 2011-02-09 .

张虹 , 李伟明 , 王俊影 , 等 . 一种用于粉体上料的气固分离装置 : 201420815218.8 [P ] . 2015-07-15 .

Zhang H , Li W M , Wang J Y , et al . Gas-solid separation device for powder feeding : 201420815218.8 [P ] . 2015-07-15 .

Stern M E , Whitehead J A . Separation of a boundary jet in a rotating fluid [J ] . Journal of Fluid Mechanics , 1990 , 217 : 41 - 69 .

Stern M E , Chassignet E P , Whitehead J A . The wall jet in a rotating fluid [J ] . Journal of Fluid Mechanics , 1997 , 335 : 1 - 28 .

Okamoto S , Gibson M M . Measurements in a heated turbulent wall jet on a concave wall [J ] . Experiments in Fluids , 1990 , 8 : 291 - 297 .

Nagendra S V H , Bhagavanulu D V S , Prasant N . Computational study of three dimensional wall jet on concave surface [J ] . Fluid Mechanics and Fluid Power-Contemporary Research , 2016 , 9 : 529 - 538 .

Nagendra S V H , Prasant N , Bhagavanulu D V S . Numerical study of 3-dimensional wall jet on curved surfaces [J ] . International Journal of Applied Engineering Research , 2017 , 12 ( 16 ): 5604 - 5609 .

Kobayashi R , Fujisawa N . Curvature effects on two-dimensional turbulent wall jets [J ] . Ingenieur-Archiv , 1983 , 53 : 409 - 417 .

Fujisawa N , Kobayashi R . Turbulence characteristics of wall jets along strong convex surfaces [J ] . International Journal of Mechanical Sciences , 1987 , 29 ( 5 ): 311 - 320 .

Fujisawa N . Visualization of roll-cell structure in turbulent wall jets along a strongly concave surface [J ] . Experiments in Fluids , 1992 , 13 ( 1 ): 70 - 72 .

Koso T , Nagasawa S , Hayami H . Visualization of streamwise vortices and entrainment in a coflowing three-dimensional wall jet [J ] . Transactions of Visualization Society of Japan , 1990 , 10 (S 2 ) : 53 - 58 .

Furman L , Stegowski Z . CFD models of jet mixing and their validation by tracer experiments [J ] . Chemical Engineering and Processing: Process Intensification , 2011 , 50 ( 3 ): 300 - 304 .

Dejoan A , Wang C , Leschziner M A . Assessment of turbulence models for predicting the interaction region in a wall jet by reference to LES solution and budgets [J ] . Flow Turbulence and Combustion , 2006 , 77 ( 1 ) : 229 - 255 .

Ries F , Li Y X , Rißmann M , et al . Database of near-wall turbulent flow properties of a jet impinging on a solid surface under different inclination angles [J ] . Fluids , 2018 , 3 ( 5 ): 2201 - 2222 .

Soleimaninia M , Maxwell B , Oshkai P , et al . Experimental and numerical investigation of turbulent jets issuing through a realistic pipeline geometry: asymmetry effects for air, helium, and hydrogen [J ] . International Journal of Hydrogen Energy , 2018 , 43 ( 19 ): 9379 - 9398 .

Chandrasekhara S N V , Bandyopadhyay P . Mean and turbulence characteristics of three-dimensional wall jets [J ] . Journal of Fluid Mechanics , 1975 , 71 ( 3 ): 541 - 662 .

Newman B G , Patel R P , Savage S B , et al . Three-dimensional wall jet originating from a circular orifice [J ] . Aeronautical Quarterly , 1972 , 8 : 188 - 200 .

丁涛 , 张瑞芬 , 应承希 , 等 . 基于图像分析的射流扩散试验装置研制及应用 [J ] . 安全与环境学报 , 2016 , 16 ( 6 ): 247 - 251 .

Ding T , Zhang R F , Ying C X , et al . Development and application of the pollutant diffusion testing apparatus based on the image analysis [J ] . Journal of Safety and Environment , 2016 , 16 ( 6 ): 247 - 251 .

李乃稳 , 刘超 , 李龙国 . 斜向射流入水垫塘淹没射流区的紊动特性 [J ] . 水力发电学报 , 2016 , 35 ( 3 ): 66 - 72 .

Li N W , Liu C , Li L G . Turbulent characteristics of plunging region of oblique submerged jet in plunge pool [J ] . Journal of Hydroelectric Engineering , 2016 , 35 ( 3 ): 66 - 72 .

郭文思 , 李龙国 , 刘超 , 等 . 淹没射流流场演化过程研究 [J ] . 工程科学与技术 , 2017 , 49 ( s1 ): 35 - 43 .

Guo W S , Li L G , Liu C , et al . Study on the flow field of a submerged jet [J ] . Advanced Engineering Sciences , 2017 , 49 ( s1 ): 35 - 43 .

张欣玮 , 卢义玉 , 周哲 , 等 . 淹没磨料射流涡旋特性大涡模拟及研究 [J ] . 振动与冲击 , 2016 , 35 ( 19 ): 1 - 6 .

Zhang X W , Lu Y Y , Zhou Z , et al . Vortex characteristics of submerged abrasive jet with large eddy simulation [J ] . Journal of Vibration and Shock , 2016 , 35 ( 19 ): 1 - 6 .

童秉纲 , 尹协远 , 朱克勤 . 涡运动理论 [M ] . 合肥 : 中国科学技术大学出版社 , 1994 : 6 - 18 .

Tong B G , Yin X Y , Zhu K Q . Vortex Motion Theory [M ] . Hefei : Press of University of Science and Technology of China , 1994 : 6 - 18 .

Karagozian A R . An analytical model for the vorticity associated with a transverse jet [J ] . AIAA Journal , 1986 , 24 ( 3 ): 429 - 436 .

Fujisawa N , Kobayashi R , Shirai H . Centrifugal instability of turbulent wall jets along strongly concave surfaces [J ] . Transactions of the ASME , 1985 , 52 : 492 .

Kobayashi R , Fujisawa N . Turbulence measurements in wall jets along strongly concave surfaces [J ] . Acta Mechanica , 1983 , 47 : 39 - 52 .

Kobayashi R , Fujisawa N . Taylor-Görtler instability of turbulent wall jets along concave surfaces [J ] . Journal of Applied Mechanics , 1980 , 47 : 671 - 672 .

Wadey P D . On the development of Görtler vortices in wall jet flow [J ] . Journal of Engineering Mathematics , 1992 , 26 : 297 - 313 .

Malatesta V , Souza L F , Liu J T C , et al . Heat transfer analysis in a flow over concave wall with primary and secondary instabilities [J ] . Procedia Iutam , 2015 , 14 : 487 - 495 .

Tani I . Production of longitudinal vortices in the boundary layer along a concave wall [J ] . Journal of Geophysical Research , 1962 , 67 ( 8 ): 3075 - 3080 .

张欣玮 , 汤积仁 , 卢义玉 , 等 . 淹没条件下水射流涡旋特性大涡模拟及实验研究 [J ] . 中国石油大学学报(自然科学版) , 2015 , 39 ( 3 ): 98 - 104 .

Zhang X W , Tang J R , Lu Y Y , et al . Large eddy simulation and experimental study on vortex characteristics of water jet in submerged condition [J ] . Journal of China University of Petroleum (Edition of Natural Science) , 2015 , 39 ( 3 ): 98 - 104 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

计及气泡诱导与剪切湍流的气泡破碎、湍流相间扩散及传质模型

置障条件下半密闭空间油气爆炸特性实验与数值模拟

基于REDIM方法构建的亚网格燃烧模型及其应用

刚性波纹面与柔性波纹面传热及流动特性

液氢球阀空化与涡旋耦合机理及非线性流动特性