|
| Numerical Simulation on Temperature Rise of High-speed Geotechnical Centrifuge |
| |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.12.014 |
| KeyWord:CFD SRF high-speed geotechnical centrifuge wind resistance power temperature rise |
| Author | Institution |
| SHAO Wen-bo |
Wuxi Institute of Applied Technology, Tsinghua University, Jiangsu Wuxi , China |
| REN Xiao-dong |
Key Laboratory of Thermal Science and Power Engineering, Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing , China |
| HU Bo |
Key Laboratory of Thermal Science and Power Engineering, Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to conduct numerical calculation of the temperature distribution in the machine room of high-speed geotechnical centrifuges, study the effects of different vacuum degree and side wall temperature on the temperature rise of the machine room, and propose a temperature control scheme for high-speed geotechnical centrifuges. In this work, the SRF method and the RNG k-ε turbulence model were adopted to conduct numerical calculation and compare the temperature rise of the centrifuge at different speed. Under the working condition with an acceleration of 1 500 g, the effects of different machine room temperature and side wall temperature on the temperature rise of the machine room were compared. The results revealed that the maximum temperature in the machine room could reach 83 ℃ when the high-speed geotechnical centrifuge ran at an acceleration of 1 500 g. The maximum temperature in the machine room dropped by about 15 ℃ when the operating pressure was reduced from 100 kPa to 3 kPa, and every time the temperature of the side wall decreased by 10 ℃, the maximum temperature of the machine room decreased by about 5 ℃. In addition, a cooling ring with an area not less than 1/4 of the top area could be arranged on the top of the machine room against the side wall when the vacuum degree and side wall cooling cannot met the requirements of heat dissipation. Based on CFD numerical calculation method, the changes of machine room temperature of high-speed geotechnical centrifuge with speed, vacuum degree and side wall temperature are quantitatively obtained, providing a reference for design of cooling schemes. |
| Close |
|
|
|