|本期目录/Table of Contents|

[1]路义萍,葛亚军,王浩然,等. 定子多风路空冷汽轮发电机流场模拟湍流模型验证与分析[J].电机与控制学报,2018,22(05):63-69.[doi:10.15938/j.emc.2018.05.008]
 LU Yi-ping,GE Ya-jun,WANG Hao-ran,et al. Verification and analysis on turbulence model of flow field simulationfor multiple ventilation stator ducts of air-cooled turbo generators[J].,2018,22(05):63-69.[doi:10.15938/j.emc.2018.05.008]
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 定子多风路空冷汽轮发电机流场模拟湍流模型验证与分析(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
22
期数:
2018年05
页码:
63-69
栏目:
出版日期:
2018-05-15

文章信息/Info

Title:
 Verification and analysis on turbulence model of flow field simulationfor multiple ventilation stator ducts of air-cooled turbo generators
作者:
 路义萍 葛亚军 王浩然 王芳
 (哈尔滨理工大学 机械动力工程学院,黑龙江 哈尔滨 150080)
Author(s):
 LU Yi-pingGE Ya-junWANG Hao-ranWANG Fang
 (School of Mechanical & Power Engineering,Harbin University of Science and Technology,Harbin 150080,China)
关键词:
定子多风路空冷汽轮发电机 实验研究 数值模拟 流场 湍流模型选取
Keywords:
multiple ventilation stator ducts of air-cooled turbo generators experiment numerical simula-tionflow fieldselection of turbulence model
分类号:
TM311
DOI:
10.15938/j.emc.2018.05.008
文献标志码:
A
摘要:
 研究一种湍流模型模拟定子多风路大型空冷汽轮发电机中的具有多种流动形势转变特征的复杂流动。以一台三进四出定子多风路的空冷汽轮发电机为原型,建立了包括风扇、定子、转子、气隙在内的通风系统实验台,采用热线风速仪测量了 1 000 r/min 稳态工况下出风区中多个定子风沟出口截面的风速; 然后,建立了实验台物理模型并采用三维建模软件进行了数学建模,在相同工况下进行数值计算,同时将测量结果与采用 3 种湍流模型得到的计算结果进行对比。结果表明: 采用 RNG k - ε 模型时的风速计算结果与实验结果误差最小,RNG k - ε 模型更适合模拟定子多风路的大型空冷汽轮发电机整机内部的流场。最后,分析了采用 RNG k - ε 湍流输运模型时实验台内部的流场分布特征。所得结论可为大型空冷汽轮发电机通风冷却设计提供理论参考。
Abstract:
 A suitable turbulence model was researched for the simulation of the complex flow characteris-tics in multiple ventilation large air cooled turbo generator. A three inlets and four outlets of multiple ven-tilation stator ducts of turbo-generator with air coolant was comprised as the prototype,including fan,sta-tor,rotor,air gap and ventilation system experimental bench. The values of wind speed of multiple sta-tors duct outlet zone were measured under 1 000 r / min steady-state condition using the hot-wire anemom-eter. Then,physical model was established by using three-dimensional establishing software and was usedfor numerical calculation under the same condition. The measurement results are compared with the cal-culation results of standard k - ε ,realizable k - ε and the RNG k - ε turbulence models. The resultsshow that calculation of RNG k - ε model has the minimum error with experimental results,which is moresuitable for the simulation of the distribution of the flow field in a large air cooled turbo generator. Final-ly,experimental bench interior flow field distribution characteristics of RNG k - ε model adopted were an-alyzed. The conclusions provides a theoretical reference for the design of ventilation cooling of Large Air-cooled Turbo generator.

参考文献/References:

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备注/Memo

备注/Memo:
 收稿日期: 2016 - 11 - 11
基金项目: 国家自然科学基金( 50976027)
作者简介: 路义萍( 1965—) ,女,博士,教授,博士生导师,研究方向为多种电机传热与流动研究;
葛亚军( 1993—) ,男,硕士,研究方向为电机内传热与流动数值模拟;
王浩然( 1989—) ,男,硕士,研究方向为电机内传热与流动数值模拟;
王 芳( 1969—) ,女,博士,教授,研究方向为电机通风冷却及传热,大空间通风。
更新日期/Last Update: 2018-07-02