Full
Outline
To address the erosion wear problem of U‑shaped heat exchange tubes by particle‑containing cooling water，a solid‑liquid two‑phase flow erosion model was established based on ANSYS Fluent.Through orthogonal experiments and single‑factor analysis，the effects of inlet velocity，particle diameter，particle concentration，and tube diameter on tube wall erosion characteristics were systematically studied.The results show that inlet velocity has the most significant influence，with the maximum erosion rate increasing quadratically with velocity.When velocity increases from 1 m/s to 5 m/s，the maximum erosion position migrates from θu=30° to near θu=180°，with a service life of only 3.08 years at 5 m/s；when particle diameter increases from 0.1 mm to 0.5 mm，the erosion rate increases by 321%，and service life decreases to 17.18 years；when particle concentration increases from 0.01% to 0.03%，the erosion rate rises by 246%；increasing tube diameter can disperse the erosion area，reduce erosion rate，and extend heat exchanger life；by controlling velocity and optimizing tube diameter，the service life of U‑shaped heat exchange tubes can be significantly extended.The research provides references for optimal design of heat exchangers.
76
26
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
