Study on modeling of gas-liquid two-phase flow in heat transport device using direct calculation of interface-tracking method

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420137
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Tokyo Metropolitan College of Industrial Technology (2015-2016); Tokyo University of Agriculture and Technology (2014)
• Principal Investigator: SAITO Hiroshi 東京都立産業技術高等専門学校, ものづくり工学科, 助教 (40401450)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 熱工学 / 流体工学 / 伝熱機器 / 気液二相流 / 熱輸送 / 内部流動

Outline of Final Research Achievements

In this study, simultaneous measurement of heat transport rate and internal flow pattern was performed for two different heat transport devices: Parallel-Tube Heat Transport Device (PTH) and Oscillating Heat Pipe (OHP). The purpose was to obtain quantitative internal flow information that could be benchmark data in numerical calculation. The internal flow patterns were captured by using a high-speed camera, and the temporally and spatially changing of flow patterns were identified by laterally averaged brightness of the captured images. From this analysis results, the internal-flow characteristics: appearance ratio of flow patterns, gas-liquid interfacial velocity, the number of interfaces, and the characteristic frequency of internal flow could be calculated in this study. These can become benchmark data usable for future development of the numerical models and this type of quantitative data has not been supplied in the open literature.

Free Research Field

熱工学