Numerical simulation of air flow distribution in large air-cooled turbo generator rotor at different rotation speed and inlet pressure

Author

Zuomin Wang ; Jiade Han

Author_Institution

Sch. of Mech. & Power Eng., Harbin Univ. of Sci. & Technol., Harbin, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

2352

Lastpage

2355

Abstract

A physical model of three-dimensional half axis rotor of one 110MW air-cooled turbo-generator was created by the Gambit software. Static Cartesian coordinates mathematical model was transformed to reference rotational coordinate model to simulate. Flow field of the model was simulated numerically according Finite Volume Method by the Fluent software. The effect of rotor rotation speed and inlet pressure on the distribution of air mass flow rate of axial inlet, end duct, sub-slot and radial ducts ventilation was analyzed. Distribution of air flow rate in the rotor under experimental abnormal state is different to actual normal working state.

Keywords

cooling; ducts; finite volume methods; power engineering computing; rotors; turbogenerators; Fluent software; Gambit software; air flow rate distribution; axial inlet; finite volume method; flow field; inlet pressure; large air-cooled turbo generator rotor; numerical simulation; power 110 MW; radial duct ventilation; rotor rotation speed; static Cartesian coordinate mathematical model; three-dimensional half axis rotor; Atmospheric modeling; Ducts; Equations; Mathematical model; Numerical models; Rotors; Ventilation; cooling; numerical simulation; rotor; turbo generator;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013898

Filename

7013898