考虑旋转和曲率的湍流模型修正及应用

任芸 1; 2; 吴登昊 1; 3; 牟介刚 3; 李晓俊 2

doi:10.7652/xjtuxb201609004

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考虑旋转和曲率的湍流模型修正及应用

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- 考虑旋转和曲率的湍流模型修正及应用
- Modification for Turbulence Model Considering Rotation and Curvature with Applications
- 西安交通大学学报 2016年50卷第9期页码：25-30
- 作者机构：
  
  1. 浙江工业大学之江学院,杭州,310024
  2. 浙江理工大学机械与自动控制学院,杭州,310018
- 作者简介：
- 基金信息：
  
  : 2016-04-06。作者简介: 任芸(1985—),女,讲师。基金项目: 浙江省自然科学基金资助项目(LQ15E090005,LQ15E090004);中国博士后科学基金资助项目(2016M590546);国家自然科学基金资助项目(51409233);浙江工业大学自然科学基金重点资助项目(2014X2015)
- DOI：10.7652/xjtuxb201609004
  中图分类号： TH311
- 网络首发：2016-09-10，
  
  纸质出版：2016
- 稿件说明：
移动端阅览
任芸 1, 2, 吴登昊 1, 等. 考虑旋转和曲率的湍流模型修正及应用[J]. 西安交通大学学报, 2016,50(9):25-30.

Modification for Turbulence Model Considering Rotation and Curvature with Applications[J]. 2016, 50(9): 25-30.
任芸 1, 2, 吴登昊 1, 等. 考虑旋转和曲率的湍流模型修正及应用[J]. 西安交通大学学报, 2016,50(9):25-30. DOI： 10.7652/xjtuxb201609004.

Modification for Turbulence Model Considering Rotation and Curvature with Applications[J]. 2016, 50(9): 25-30. DOI： 10.7652/xjtuxb201609004.

摘要

通过分析湍流模型在模拟旋转和弯曲壁面的旋转机械内流时存在的问题发现

在原有湍流模型的基础上考虑旋转和曲率效应是提高离心泵内流模拟精度和改善流动不稳定性的必然选择; 在k-ω SST模型中通过考虑旋转和曲率修正

同时引入Hellsten的理查德森数修正模型思想和扩展内秉旋转张量修正

生成了一种新的湍流模型; 应用改进后的湍流模型对比转数为34.34的离心泵在不同工况下的内流场进行了数值模拟

并将改进前后的数值计算结果与试验结果进行了详细对比

由此分析了泵内部流场的分布规律。研究结果表明:改进后的湍流模型预测的能量性能与试验值更接近; 在0.6倍设计流量工况下

改进后湍流模型的扬程预测精度提高了3%

效率预测精度提高了近2%

这一结论在内流场中得到了验证; 与原湍流模型相比

改进后湍流模型明显改善了叶轮流道和蜗壳扩散段处的流动情况。该结果可为湍流模型研究提供参考。

Abstract

Analyzing the problems in the numerical simulation for inner flow by original turbulence model in rotary machines

it is found necessary to totally consider the effects of rotation and curvature for enhancing the numerical accuracy and improving instability of centrifugal pump inner flow. The effects of rotation and curvature in k-ω SST model are taken into account

and a modified turbulence model based on Richardson number from Hellsten is Built. Then the improved turbulence model is adopted to simulate the steady-state inner flow in a centrifugal pump at specific speed of 34.34 under different operating conditions. A comparison between the experimental data and numerical results from the original and modified models reveals t

he law of pump inner flow. The hydraulic performance predicted by the improved model gets closer to the experimental results than that by original one. In the case of the flow rate of 0.6Q

the head accuracy and the precision of efficiency predicted by the improved turbulence model increase by 3% and 2%

respectively. The inner flow of pump under 0.6Q

verifies the superiority of the improved turbulence model

and the turbulent flows both in impeller passages and diffusor are improved obviously.

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references

毕志予, 吴达人. 离心叶轮内二维湍流边界层的数值计算 [J]. 农业机械学报, 1990(1): 83-89.

BI Zhiyu, WU Daren. The calculation of 2D turbulent boundary layer in centrifugal impeller [J]. Transactions of the Chinese Society for Agricultural Machinery, 1990(1): 83-89.

郎涛, 施卫东, 陈刻强, 等. 不同比转数前伸式双叶片离心泵内部流动规律研究 [J]. 农业机械学报, 2015, 46(12): 89-95.

LANG Tao, SHI Weidong, CHEN Keqiang, et al. Flow field in forward-extended double blades centrifugal pump at different specific speeds [J]. Transactions of the Chinese Society for Agricultural Machinery, 2015, 46(12): 89-95.

LAUNDER B E, SPALDING D B. Lectures in mathematical models of turbulence [M]. London, UK: Academic Press, 1972: 157-162.

WILCOX D C. Reassessment of the scale-determining equation for advanced turbulence models [J]. AIAA Journal, 1988, 26(11): 1299-1310.

杨敏官, 刘栋, 贾卫东, 等. 离心泵叶轮内部三维湍流流动的分析 [J]. 江苏大学学报(自然科学版), 2006, 27(6): 524-527.

YANG Minguan, LIU Dong, JIA Weidong, et al. Analysis on turbulent flow in impeller of centrifugal pump [J]. Journal of Jiangsu University(Natural Science Edition), 2006, 27(6): 524-527.

MENTER F R. Two-equation eddy-viscosity turbulence models for engineering applications [J]. AIAA Journal, 1994, 32(8): 1598-1605.

JOHNSTION J P, HALLEEN R M, LEZIUS D K. Effects of spanwise rotation on the structure of two-dimensional fully developed turbulent channel flow [J]. Journal of Fluid Mechanics, 1972, 56(3): 533-557.

IRWIN H P A H, ARONT SMITH P. Prediction of the effect of streamline curvature on turbulence [J]. Physics of Fluids, 1975, 18(6): 624-630.

BRADSHAW P. The analogy between streamline curvature and buoyancy in turbulent shear flow [J]. Journal of Fluid Mechanics, 1969, 36(1): 177-191.

LAUNDER B E, PRIDDIN C H, SHARMA B. The calculation of turbulent boundary layers on spinning and curved surfaces [J]. Journal of Fluids Engineering, 1977, 99(3): 231-239.

KHODAK A, HIRSCH C. Second order non-linear k-ε models with explicit effect of curvature and rotation [C]∥Proceedings of the 3rd ECCOMAS Computational Fluid Dynamics Conference. New York, USA: Wiley, 1996: 690-696.

HELLSTEN A. Some improvements in Menter's k-ω SST turbulence model [C]∥Proceedings of the 29th AIAA Fluid Dynamics Conference. Reston, VA, USA: AIAA, 1998: 1-11.

SPALART P R, SHUR M L. On the sensitization of turbulence models to rotation and curvature [J]. Aerospace Science and Technology, 1997, 5: 297-302.

SMIRNOV P E, MENTER F R. Sensitization of the SST turbulence model to rotation and curvature by applying the Spalart-Shur correction term [J]. ASME Journal of Turbomachinery, 2009, 131: 041010.

GÜLICH J F. Centrifugal pumps [M]. Berlin, Germany: Springer, 2007: 85-111.

谈明高, 刘厚林, 袁寿其. 离心泵能量性能预测的对比 [J]. 农业工程学报, 2008, 24(11): 95-98.

TAN Minggao, LIU Houlin, YUAN Shouqi. Comparative research on energy performance prediction of centrifugal pumps [J]. Transactions of the CSAE, 2008, 24(11): 95-98.

关醒凡. 现代泵理论与设计 [M]. 北京: 中国宇航出版社, 2011: 600-615.

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