基于流固耦合的错位桨搅拌假塑性流体动力学特性

doi:10.11949/j.issn.0438-1157.20161651

化工学报 ›› 2017, Vol. 68 ›› Issue (6): 2328-2335.DOI: 10.11949/j.issn.0438-1157.20161651

基于流固耦合的错位桨搅拌假塑性流体动力学特性

栾德玉, 张盛峰, 郑深晓, 魏星, 王越

青岛科技大学机电工程学院, 山东青岛 266061

收稿日期:2016-11-23 修回日期:2017-03-06 出版日期:2017-06-05 发布日期:2017-06-05
通讯作者: 栾德玉
基金资助:
山东省自然科学基金项目（ZR2014EEM017）；山东省科技发展计划项目（2013YD09007）

Dynamic characteristics of impeller of perturbed six-bent-bladed turbine in pseudoplastic fluid based on fluid-structure interaction

LUAN Deyu, ZHANG Shengfeng, ZHENG Shenxiao, WEI Xing, WANG Yue

College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

Received:2016-11-23 Revised:2017-03-06 Online:2017-06-05 Published:2017-06-05
Contact: 10.11949/j.issn.0438-1157.20161651
Supported by:
supported by the Natural Science Foundation of Shandong Province (ZR2014EEM017) and the Science and Technology Development Planning Program of Shandong Province (2013YD09007)

摘要/Abstract

摘要：

基于ANSYS Workbench分析平台，采用双向流固耦合计算方法，对错位六弯叶搅拌器）6PBT）和六弯叶搅拌器）6BT）的动力学特征进行了对比分析，根据桨叶与流体之间相互耦合运动特性，探讨了宏观流场的结构和搅拌功耗特性，分析了桨叶的变形和等效应力分布，并对6PBT桨在静态和预应力状态下的模态进行了对比研究。结果表明：同6BT桨相比，6PBT桨叶端部变形量增加了8%，端部应力提高了61%，而根部应力降低了6.7%，应力沿径向呈均匀化分布，这表明错位桨对流体的作用力更大，能够更快地传递能量，同时桨叶强度也得到相应提高；6PBT桨的静模态与预应力模态振型分布一致，在施加预应力后模态频率无明显改变，说明桨叶流场的流固耦合作用和预应力对桨叶模态的影响不大；随转速的增大，6PBT 桨的节能效果显现，体现出错位桨的优势。

关键词: 假塑性流体, 错位六弯叶桨, 流固耦合, 预应力模态分析

Abstract:

Dynamic characteristics ofimpeller of perturbed six-bent-bladed turbine (6PBT) and six-bent-bladed turbine (6BT) are analyzedcomparatively using bidirectional fluid-structure interaction (FSI) method based on simulation platform ANSYS Workbench. Macroscopic flow field structure and power consumption caused by the coupling action between the blade and fluid are studied, and the total deformation and equivalent stress distribution along the blade are also analyzed. Besides, the natural and prestressed mode of the 6PBT impeller are investigated comparatively. The results show that, compared with 6BT impeller, the tip deformation and stress of 6PBT impeller are increased by 8% and 61%, respectively, while its root stress is reduced by 6.7% with the well stress distribution of the blade along the radial direction, which indicates that the interaction force between 6PBT impeller and fluid is stronger, resulting in the faster energy dissipation, at the meantime, the blade strength is also improved. The vibration mode of 6PBT impeller under prestressed mode is consistent with that of natural mode, and the modal frequency has no significant changes on the prestressed action, which shows that the fluid-structure interaction and prestressed action have little influence on the blade mode. With the increasing speed, 6PBT impeller has an advantage with a better energy saving effect.

Key words: pseudoplastic fluid, 6PBT impeller, fluid-structure interaction, prestressed modal analysis

中图分类号:

栾德玉, 张盛峰, 郑深晓, 魏星, 王越. 基于流固耦合的错位桨搅拌假塑性流体动力学特性[J]. 化工学报, 2017, 68(6): 2328-2335.

LUAN Deyu, ZHANG Shengfeng, ZHENG Shenxiao, WEI Xing, WANG Yue. Dynamic characteristics of impeller of perturbed six-bent-bladed turbine in pseudoplastic fluid based on fluid-structure interaction[J]. CIESC Journal, 2017, 68(6): 2328-2335.

参考文献 30

[1]	PAKZAD L, EIN-MOZAFFARI F, CHAN P. Using electrical resistance tomography and computational fluid dynamics modeling to study the formation of cavern in the mixing of pseudoplastic fluids possessing stress[J]. Chem. Eng. Sci., 2008, 63(9): 2508-2522.
[2]	SOLOMON J, ELSON T P, NIENOW A W. Cavern sizes in agitated fluids with a yield stress[J]. Chem. Eng. Commun., 1981, 11(1/2/3): 143-164.
[3]	ADAMS L W, BARIGOU M. CFD analysis of caverns and pseudo-caverns developed during mixing of non-Newtonian fluids[J]. Chem. Eng. Res. Des., 2007, 85(5): 598-604.
[4]	XIAO Q, YANG N, ZHU J, et al. Modeling of cavern formation in yield stress fluids in stirred tanks[J]. AIChE J., 2014, 60(8): 3057-3070.
[5]	EIN-MOZAF FARI F, UPRETI S R. Using ultrasonic Doppler velocimetry and CFD modeling to investigate the mixing of non-Newtonian fluids possessing yield stress[J]. Chem. Eng. Res. Des., 2009, 87(4): 515-523.
[6]	SOSSA-ECHEVERRIA J, TAGHIPOUR F. Computational simulation of mixing flow of shear thinning non-Newtonian fluids with various impellers in a stirred tank[J]. Chem. Eng. Process., 2015, 93: 66-78.
[7]	PAKZAD L, EIN-MOZAFFARI F, CHAN P. Using computational fluid dynamics modeling to study the mixing of pseudoplastic fluids with a Scaba 6SRGT impeller[J]. Chem. Eng. Process., 2008, 47 (12): 2218-2227.
[8]	AMANULLAH A, HJORTH S A, NIENOW A W. Cavern sizes generated in highly shear thinning viscous fluids by SCABA 3SHP1 impeller[J]. Food Bioprod. Process., 1997, 75(C4): 232-238.
[9]	栾德玉, 周慎杰, 陈颂英. 错位六弯叶桨搅拌假塑性流体的洞穴变化[J]. 机械工程学报, 2012, 48(16): 152-157.
	LUAN D Y, ZHOU S J, CHEN S Y. Cavern development of pseudoplastic fluids stirred by impeller of perturbed six-bent-bladed turbine[J]. J. Mech. Eng., 2012, 48(16): 152-157.
[10]	AMEUR H, BOUZIT M. Numerical investigation of flow induced by a disc turbine in unbaffled stirred tank[J]. Acta Sci-technol., 2013, 35(3): 469-476.
[11]	BAKKER C W, MEYER C J, DEGLON D A. The development of a cavern model for mechanical flotation cells[J]. Miner. Eng., 2010, 23(11/12/13): 968-972.
[12]	THIBAULT F, TANGUY P A. Power-draw analysis of a coaxial mixer with Newtonian and non-Newtonian fluids in the laminar regime[J]. Chem. Eng. Sci., 2002, 57(18): 3861-3872.
[13]	SHEKHAR S M, JAYANTI S. Mixing of pseudoplastic fluids using helical ribbon impellers[J]. AIChE J., 2004, 49(11): 2768-2772.
[14]	FRADETTE L, THOME G, TANGUY P A, et al. Power and mixing time study involving a maxblend impeller with viscous Newtonian and non-Newtonian fluids[J]. Chem. Eng. Res. Des., 2007, 85(A11): 1514-1523.
[15]	孙会, 潘家祯. 带有新型内外组合桨的搅拌设备内流场的数值研究[J]. 化工学报, 2006, 57(1): 13-20.
	SUN H, PAN J Z. Numerical investigation of flow fields in stirred vessels with novel combined inner and outer agitators[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(1): 13-20.
[16]	孙会, 潘家祯. 新型内外组合搅拌桨的开发及流场特性[J]. 机械工程学报, 2007, 43(11): 56-62.
	SUN H, PAN J Z. Development and flow characteristics of novel combined inner-outer agitator[J]. J. Mech. Eng., 2007, 43(11): 56-62.
[17]	ANTOCI C, GALLATI M, SIBILLA S. Numerical simulation of fluid-structure interaction by SPH[J]. Comput. Struct., 2007, 85(1): 879-890.
[18]	GLÜCK M, BREUER M, DURST F, et al. Computation of wind-induced vibrations of flexible shells and membranous structures[J]. J. Fluid Struct., 2003, 17(5): 739-765.
[19]	BUCCHIGNANI E, STELLA F, PAGLIA F. A partition method for the solution of a coupled liquid-structure interaction problem[J]. Appl. Numer. Math., 2004, 51(4): 463-475.
[20]	江伟, 郭涛, 李国君, 等. 离心泵流场流固耦合数值模拟[J]. 农业机械学报, 2012, 43(9): 53-56.
	JIANG W, GUO T, LI G J, et al. Numerical calculation on flow field in centrifugal pump based on fluid-structure interaction theorem[J]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(9): 53-56.
[21]	李伟, 杨勇飞, 施卫东, 等. 基于双向流固耦合的混流泵叶轮力学特性研究[J]. 农业机械学报, 2015, 46(12): 82-88.
	LI W, YANG Y F, SHI W D, et al. Mechanical properties of mixed-flow pump impeller based on bidirectional fluid-structure interaction[J]. Transactions of the Chinese Society for Agricultural Machinery, 2015, 46(12): 82-88.
[22]	朱俊, 周政霖, 刘作华, 等. 刚柔组合搅拌桨强化流体混合的流固耦合行为[J]. 化工学报, 2015, 66(10): 3849-3856.
	ZHU J, ZHOU Z L, LIU Z H, et al. Fluid-structure interaction in liquid mixing intensified by flexible-rigid impeller[J]. CIESC Journal, 2015, 66(10): 3849-3856.
[23]	郑小波, 王玲军, 翁凯. 基于双向流固耦合的贯流式水轮机动力特性分析[J]. 农业工程学报, 2016, 32(4): 78-83.
	ZHENG X B, WANG L J, WENG K. Dynamic characteristics analysis of tubular turbine based on bidirectional fluid-solid coupling[J]. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(4): 78-83.
[24]	黄天成, 王德国, 周思柱, 等. 混砂车搅拌叶轮流固耦合模态分析研究[J]. 西南石油大学学报(自然科学版), 2012, 34(1): 165-170.
	HUANG T C, WANG D G, ZHOU S Z, et al. Modal research of fluid-solid coupling for the blender truck mixing impeller[J]. J. Southwest Petro. Univ. (Sci. & Tech. Edition), 2012, 34(1): 165-170.
[25]	YOUNG Y L. Fluid-structure interaction analysis of flexible composite marine propellers[J]. J. Fluid Struct., 2008, 24(1): 799-818.
[26]	栾德玉, 周慎杰, 陈颂英, 等. 错位六弯叶桨在假塑性流体中的混沌搅拌特性[J]. 化学工程, 2011, 39(9): 41-46.
	LUAN D Y, ZHOU S J, CHEN S Y, et al. Chaotic agitation characteristics of shifted 6-bent-blade impeller in pseudoplastic fluid[J]. Chem. Eng., 2011, 39(9): 41-46.
[27]	栾德玉, 周慎杰, 陈颂英. 错位六弯叶搅拌槽内假塑性流体的混合特性[J]. 高校化学工程学报, 2012, 26(5): 787-792.
	LUAN D Y, ZHOU S J, CHEN S Y. Mixing characteristics of pseudoplastic fluid in a stirred tank with the stirrer composed of perturbed six-bent-bladed turbine[J]. J. Chem. Eng. Chin. Univ., 2012, 26(5): 787-792.
[28]	KELLY W, GIGAS B. Using CFD to predict the behavior of power law fluids near axial-flow impellers operating in the transitional flow regime[J]. Chem. Eng. Sci., 2003, 58(10): 2141-2152.
[29]	SAEED S, EIN-MOZAFFARI F. Using dynamic tests to study the continuous mixing of xanthan gum solutions[J]. J. Chem. Technol. Biotechnol, 2008, 83(4): 559-568.
[30]	METZNER A B, OTTO R E. Agitation of non-Newtonian fluids[J]. AIChE J., 1957, 3(1): 3-11.

基于流固耦合的错位桨搅拌假塑性流体动力学特性

Dynamic characteristics of impeller of perturbed six-bent-bladed turbine in pseudoplastic fluid based on fluid-structure interaction

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 30

相关文章 15

编辑推荐

Metrics

本文评价

[1]	李世聪, 钱才富, 李双喜, 陈炼. 油气两相动压密封动态特性的热流固耦合研究[J]. 化工学报, 2020, 71(5): 2190-2201.
[2]	王修纲, 吴裕凡, 郭潞阳, 路庆华, 叶晓峰, 曹育才. 聚合釜传热性能的实验研究及数值模拟[J]. 化工学报, 2020, 71(2): 584-593.
[3]	田亚晓, 王乃用, 李常兴, 杜文静. 泡沫镍板冷却特性的实验研究及数值模拟[J]. 化工学报, 2019, 70(S1): 79-85.
[4]	李静岩, 刘中良, 周宇, 李艳霞. CO₂羽流地热系统热开采过程热流固耦合模型及数值模拟研究[J]. 化工学报, 2019, 70(1): 72-82.
[5]	李斌, 张尚彬, 张磊, 滕昭钰, 王佑天. 基于LBM-DEM的鼓泡床内气泡-颗粒动力学数值模拟[J]. 化工学报, 2018, 69(9): 3843-3850.
[6]	栾德玉, 魏星, 陈一鸣. 错位六弯叶桨搅拌假塑性流体流场宏观不稳定性数值模拟[J]. 化工学报, 2018, 69(5): 1999-2006.
[7]	陈汇龙, 李同, 任坤腾, 王彬, 赵斌娟. 端面变形对液体动压型机械密封液膜瞬态特性的影响[J]. 化工学报, 2017, 68(4): 1533-1541.
[8]	周国发, 阳培民, 罗智, 江先念. 基于黏弹性热流固耦合作用的模内微装配成型过程数值模拟[J]. 化工学报, 2017, 68(3): 1129-1137.
[9]	谷德银, 刘作华, 邱发成, 许传林, 谢昭明, 李军, 陶长元, 王运东. 穿流-刚柔组合桨强化固液两相的悬浮行为[J]. 化工学报, 2017, 68(12): 4556-4564.
[10]	赵颍杰, 孙宝芝, 史建新, 干依燃, 刘尚华. 蒸汽发生器传热管双向流固耦合数值分析[J]. 化工学报, 2016, 67(S1): 217-223.
[11]	朱俊, 周政霖, 刘作华, 郑雄攀, 刘仁龙, 陶长元, 王运东. 刚柔组合搅拌桨强化流体混合的流固耦合行为[J]. 化工学报, 2015, 66(10): 3849-3856.
[12]	孙宝芝, 郑陆松, 韩文静, 张国磊, 刘尚华. 基于流固耦合的蒸汽发生器换热管结构应力分析[J]. 化工学报, 2014, 65(S1): 364-370.
[13]	周光正, 葛蔚. 光滑粒子动力学方法在复杂流动中的研究进展[J]. 化工学报, 2014, 65(4): 1145-1161.
[14]	杜雁霞, 肖光明, 桂业伟, 贺立新, 刘磊. 相变热控装置内部的传热特性[J]. 化工学报, 2012, 63(S1): 107-113.
[15]	栾德玉1，2，周慎杰1，陈颂英1. 搅拌槽内假塑性流体洞穴研究进展[J]. 化工进展, 2012, 31(03): 502-507.