Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System
An investigation on the two-phase flow field inside a grooved rotating-disk system is presented by experiment and computational fluid dynamics numerical simulation. The grooved rotating-disk system consists of one stationary flat disk and one rotating grooved disk. A three-dimensional computational...
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doaj-1d4b58ddf27f46e2b0b94041a53b30052020-11-24T22:14:36ZengMDPI AGProcesses2227-97172019-09-017963210.3390/pr7090632pr7090632Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk SystemChunming Li0Wei Wu1Yin Liu2Chenhui Hu3Junjie Zhou4China North Vehicle Research Institute, Beijing 100072, ChinaNational Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, ChinaNational Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, ChinaNational Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, ChinaNational Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, ChinaAn investigation on the two-phase flow field inside a grooved rotating-disk system is presented by experiment and computational fluid dynamics numerical simulation. The grooved rotating-disk system consists of one stationary flat disk and one rotating grooved disk. A three-dimensional computational fluid dynamics model considering two-phase flow and heat transfer was utilized to simulate phase distributions and heat dissipation capability. Visualization tests were conducted to validate the flow patterns and the parametric effects on the flow field. The results indicate that the flow field of the grooved rotating-disk system was identified to be an air−oil flow. A stable interface between the continuous oil phase and the two-phase area could be formed and observed. The parametric analysis demonstrated that the inter moved outwards in the radial direction, and the average oil volume fraction over the whole flow field increased with smaller angular speed, more inlet mass flow of oil, or decreasing disk spacing. The local Nusselt number was remarkably affected by the oil volume fraction and the fluid flow speed distributions in this two-phase flow at different radial positions. Lastly, due to the change of phase volume fraction and fluid flow speed, the variation of the average Nusselt number over the whole flow field could be divided into three stages.https://www.mdpi.com/2227-9717/7/9/632CFDtwo-phase flowvolume of fluidNusselt numbergrooved diskflow pattern |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chunming Li Wei Wu Yin Liu Chenhui Hu Junjie Zhou |
spellingShingle |
Chunming Li Wei Wu Yin Liu Chenhui Hu Junjie Zhou Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System Processes CFD two-phase flow volume of fluid Nusselt number grooved disk flow pattern |
author_facet |
Chunming Li Wei Wu Yin Liu Chenhui Hu Junjie Zhou |
author_sort |
Chunming Li |
title |
Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System |
title_short |
Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System |
title_full |
Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System |
title_fullStr |
Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System |
title_full_unstemmed |
Analysis of Air–Oil Flow and Heat Transfer inside a Grooved Rotating-Disk System |
title_sort |
analysis of air–oil flow and heat transfer inside a grooved rotating-disk system |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2019-09-01 |
description |
An investigation on the two-phase flow field inside a grooved rotating-disk system is presented by experiment and computational fluid dynamics numerical simulation. The grooved rotating-disk system consists of one stationary flat disk and one rotating grooved disk. A three-dimensional computational fluid dynamics model considering two-phase flow and heat transfer was utilized to simulate phase distributions and heat dissipation capability. Visualization tests were conducted to validate the flow patterns and the parametric effects on the flow field. The results indicate that the flow field of the grooved rotating-disk system was identified to be an air−oil flow. A stable interface between the continuous oil phase and the two-phase area could be formed and observed. The parametric analysis demonstrated that the inter moved outwards in the radial direction, and the average oil volume fraction over the whole flow field increased with smaller angular speed, more inlet mass flow of oil, or decreasing disk spacing. The local Nusselt number was remarkably affected by the oil volume fraction and the fluid flow speed distributions in this two-phase flow at different radial positions. Lastly, due to the change of phase volume fraction and fluid flow speed, the variation of the average Nusselt number over the whole flow field could be divided into three stages. |
topic |
CFD two-phase flow volume of fluid Nusselt number grooved disk flow pattern |
url |
https://www.mdpi.com/2227-9717/7/9/632 |
work_keys_str_mv |
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