Iterative conjugate heat transfer analysis for heat transfer enhancement of an externally cooled three‐phase induction motor. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Tiwari, Ankit; Yavuzkurt, Savas
• Is Part Of: IET electric power applications. Volume 11:Issue 1(2017)
• Page Start: 99
• Page End: 107
• Publication Date: 2017-01-01
• Subjects: induction motors -- computational fluid dynamics -- cooling -- rotors -- stators; iterative conjugate heat transfer analysis -- heat transfer enhancement -- externally cooled three‐phase induction motor -- thermal modelling -- drill pump motor -- constant speed three‐phase induction motor -- computational fluid dynamics -- CFD -- rotor -- stator -- separate annulus model -- air gap -- boundary conditions -- annulus walls -- mesh generation quality -- FLUENT -- maximum temperature prediction; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2016.0194
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : A novel iterative conjugate heat transfer method is proposed for thermal modelling of a drill pump motor which is a constant speed three‐phase induction motor. The major advantage of this technique is that it enables computational fluid dynamics (CFD) and heat transfer analysis of the rotor and the stator in a segregated manner. The two are then coupled in a separate annulus model, which represents the air gap, via boundary conditions on the annulus walls. This greatly reduces the total number of computational cells and enables good quality mesh generation – a pre‐requisite for accurate CFD predictions. To validate this method, a baseline CFD and heat transfer analysis was done using FLUENT and the maximum temperature prediction was found to be within 1.75% of the previously done experiments on the existing design of the machine. Further, this method was applied to develop a heat transfer enhancement solution which reduced the maximum temperature in the drill motor from 203.5 °C to 172.9 °C.