核电超长末叶气动稳定性的流固耦合数值研究

庾明达 1; 徐自力 1; 2; 范志飞 3; 曹守洪 3; 范小平 3; 方宇 3

doi:10.7652/xjtuxb201807015

您当前的位置：

首页 >

文章列表页 >

核电超长末叶气动稳定性的流固耦合数值研究

更新时间：2025-07-09

- 核电超长末叶气动稳定性的流固耦合数值研究
- Numerical Study on the Aerodynamic Stability of Super-Long Last-Stage Blades of a Nuclear Turbine Using Fluid-Structure Coupling
- 西安交通大学学报 2018年52卷第7期页码：101-107
- 作者机构：
  
  1. 西安交通大学航天航空学院,西安,710049
  2. 西安交通大学机械结构强度与振动国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2017-11-16。作者简介: 庾明达(1993—),男,硕士生;徐自力(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51675406)
- DOI：10.7652/xjtuxb201807015
  中图分类号： O323
- 网络首发：2018-07-10，
  
  纸质出版：2018
- 稿件说明：
移动端阅览
庾明达 1, 徐自力 1, 2, 等. 核电超长末叶气动稳定性的流固耦合数值研究[J]. 西安交通大学学报, 2018,52(7):101-107.

Numerical Study on the Aerodynamic Stability of Super-Long Last-Stage Blades of a Nuclear Turbine Using Fluid-Structure Coupling[J]. 2018, 52(7): 101-107.
庾明达 1, 徐自力 1, 2, 等. 核电超长末叶气动稳定性的流固耦合数值研究[J]. 西安交通大学学报, 2018,52(7):101-107. DOI： 10.7652/xjtuxb201807015.

Numerical Study on the Aerodynamic Stability of Super-Long Last-Stage Blades of a Nuclear Turbine Using Fluid-Structure Coupling[J]. 2018, 52(7): 101-107. DOI： 10.7652/xjtuxb201807015.

摘要

为了准确模拟内流场长叶片在高背压条件下的气动特性和稳定性机制

采用三维时域响应流固耦合算法进行了研究。流场域先进行内部迭代收敛后

在时域上与固体域进行耦合迭代求解

并且利用流场与叶片有限元模型之间的交界面进行气动力、位移等变量的数据交换和迭代计算

对新开发的核电超长末级叶片在3 600、7 200、10 800 Pa这3种背压工况下的气动稳定性和流动特征进行了分析。结果表明

随着背压增大

在叶栅流道内的近出口处附近出现了由压力扰动引起的旋涡流动现象

3种背压工况下叶片的时域响应曲线均以1阶动频模态为主进行自由衰减

并表现出非线性的振动特征

叶片的响应幅值均呈现收敛的趋势

新开发的核电超长末级叶片在背压从3 600增大到10 800 Pa范围内时保持气动稳定

不会发生颤振现象。叶栅背弧面激波随背压升高不断朝气流方向移动但并未发生脱体

在叶片振动过程中叶高各截面的流场流动也保持平稳

同时

时域响应曲线的气动阻尼随背压变大而减小

这表明叶片的气动稳定性随背压增加而逐渐减弱。

Abstract

A 3-D time-domain fluid-structure coupling method is adopted to analyze the aerodynamic characteristics of super-long last-stage blades of a nuclear turbine. In every time step

the variables like pressure and displacement are exchanged and calculated at the interface of the fluid-structure finite element model until convergence. The aerodynamic stability and flow behaviors of super-long last-stage blades of a newly developed nuclear turbine under three backpressure operations(3 600

7 200 and 10 800 Pa)were analyzed. Results showed that as the backpressure increases

eddies occur near the exits of the cascades due to the pressure disturbance. The amplitudes of blade response are all freely attenuating with the first-order natural frequency of the rotor blade in three different backpressure working operations. Besides

nonlinear features are caught within the oscillations

indicating that the newly developed turbine blades can maintain aerodynamically stable and there is no sign of flutter in the range from 3 600 Pa to 10 800 Pa. The shock waves on the suction side move upstream with the back pressure rise but they do not detach and the flows keep smooth when the blades are vibrating

which may be the cause of the aerodynamic stability of the blades. However

it is found that the aerodynamic damping reduces gradually

that is to say

the aerodynamic stability weakens with the rise of the backpressure.

关键词

Keywords

references

仲继泽, 徐自力. 流固单向耦合的能量法及机翼颤振预测 [J]. 西安交通大学学报, 2017, 51(1): 109-114.

ZHONG Jize, XU Zili. Wing flutter prediction using an energy method based on one-way fluid structure coupling [J]. Journal of Xi'an Jiaotong University, 2017, 51(1): 109-114.

MOFFATT S, NING W, LI Y, et al. Blade forced response prediction for industrial gas turbines [J]. Journal of Propulsion and Power, 2005, 21(4): 707-714.

CARSTENS V, BELZ J. Numerical investigation of nonlinear fluid-structure interaction in vibrating compressor blades [J]. Journal of Turbomachinery, 2000, 123(2): 402-408.

VAHDATI M, SIMPSON G, IMREGUN M. Mechanisms for wide-chord fan blade flutter [J]. Journal of Turbomachinery, 2011, 133(4): 041029.

DOWELL E H, THOMAS J P, HALL K C. Transonic limit cycle oscillation analysis using reduced order aerodynamic models [J]. Journal of Fluids and Structures, 2004, 19(1): 17-27.

仲继泽, 徐自力. 采用快速动网格技术的时空同步流固耦合算法 [J]. 振动工程学报, 2017, 30(1): 41-48.

ZHONG Jize, XU Zili. Time-space synchronizing fluid structure coupling method using a fast dynamic mesh technique [J]. Journal of Vibration Engineering, 2017, 30(1): 41-48.

ZHONG Jize, XU Zili. A modal approach for coupled fluid structure computations of wing flutter [J]. Journal of Aerospace Engineering, 2017, 231(1): 72-81.

杨青真, 肖军, 周新海. 基于气/固耦合非定常流动的叶栅颤振分析 [J]. 推进技术, 2005, 26(6): 526-530.

YANG Qingzhen, XIAO Jun, ZHOU Xinhai. Cascade flutter investigation based on flow-structure coupling unsteady flow [J]. Journal of Propulsion Technology, 2005, 26(6): 526-530.

MCBEAN I, HOURIGAN K, THOMPSON M, et al. Prediction of flutter of turbine blades in a transonic annular cascade [J]. Journal of Fluids Engineering, 2005, 127(6): 1053-1058.

HUANG H, EKICI K. An efficient harmonic balance method for unsteady flows in cascades [J]. Aerospace Science and Technology, 2013, 29(1): 144-154

VAHDATI M, SIMPSON G, IMREGUN M. Mechanisms for wide-chord fan blade flutter [J]. Journal of Turbomachinery, 2011, 133(4): 041029.

王蕤, 仲继泽, 徐自力, 等. 动网格区域对叶片颤振流固耦合计算效率及精度的影响 [J]. 推进技术, 2017, 38(9): 2086-2092.

WANG Rui, ZHONG Jize, XU Zili, et al. Effects of coverage of dynamic mesh region on efficiency and accuracy of coupled fluid structure simulation for blade flutter [J]. Journal of Propulsion Technology, 2017, 38(9): 2086-2092.

CHEN X, ZHA G C, YANG M T. Numerical simulation of 3-D wing flutter with fully coupled fluid-structural interaction [J]. Computers Fluids, 2007, 36(5): 856-867.

SRIVASTAVA R, PANOVSKY J, KIELB R, et al. Nonlinear flutter in fan stator vanes with time dependent fixity [J]. Journal of Turbomachinery, 2012, 134(2): 021009

谢芳, 楚武利, 张皓光. 跨声轴流压气机激波/泄漏涡/边界层分离相互作用的影响 [J]. 航空动力学报, 2012, 27(2): 425-430.

XIE Fang, CHU Wuli, ZHANG Haoguang. Influence of shock waves/leakage vortex/boundary layer separation interaction in a single-stage transonic axial compressor [J]. Journal of Aerospace Power, 2012, 27(2): 425-430.

IM H, CHEN X, ZHA G. Detached eddy simulation of transonic rotor stall flutter using a fully coupled fluid-structure interaction [C]∥ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. New York, USA: ASME, 2011: 1217-1230.

张俊红,戴胡伟,鲁鑫,等.流固耦合作用下航空发动机燃烧室热疲劳研究.2018,52(5):149-156.[doi:10.7652/xjtuxb 201805021]

仲继泽,谢志强,沈渡,等.基于虚功原理的流固耦合面力和位移传递方法.2018,52(3):160-167.[doi:10.7652/xjtuxb 201803022]

仲继泽,谢志强,沈渡,等.基于空间分布弹性模量的快速动网格方法.2018,52(2):136-139.[doi:10.7652/xjtuxb201802 021]

李猛,郭勇,马骏,等.应用遗传算法的汽轮机转子启动优化.2018,52(1):54-60.[doi:10.7652/xjtuxb201801009]

仲继泽,徐自力.流固单向耦合的能量法及机翼颤振预测.2017,51(1):109-114.[doi:10.7652/xjtuxb201701017]

邱恒斌,徐自力,刘雅琳,等.一种求解含围带阻尼成圈叶片振动响应的高效方法.2016,50(11):1-6.[doi:10.7652/xjtuxb201611001]

仲继泽,徐自力,陶磊.基于虚拟弹性体的快速动网格方法.2016,50(10):132-138.[doi:10.7652/xjtuxb201610020]

刘雅琳,上官博,徐自力.干摩擦阻尼对失谐叶盘系统受迫振动的影响.2016,50(2):111-117.[doi:10.7652/xjtuxb2016 02019]

郭涛,管志成,孙光普,等.调频振子-液体联合水平减振的流固耦合机理研究.2016,50(1):28-33.[doi:10.7652/xjtuxb 201601005]

仲继泽,徐自力,方宇,等.叶片有限元分析中弹塑性过渡区应力奇异产生原因及解决方法.2015,49(9):47-51.[doi:10.7652/xjtuxb201509009]

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

电动车辆间接热系统快速除湿响应迟滞机理及优化控制策略

超临界水异常区域热力学特性研究

三塔合一间接空冷系统结构参数对夏季运行特性的影响研究

混合电解槽阵列协同的风光耦合制氢系统双层多目标优化

冷库水平空气幕热湿阻隔性能数值模拟研究