Experimental and numerical study on the flow and heat transfer of ring-ribbed tank in deep-sea manned submersible

被引:0
|
作者
Chen, Kang [1 ,2 ]
Zhang, Wanliang [1 ,2 ]
Xia, Bin [1 ,2 ]
Tong, Pan [1 ,2 ]
Yang, Lele [3 ]
机构
[1] China Ship Sci Res Ctr, State Key Lab Deep Sea Manned Vehicles, Wuxi 214082, Peoples R China
[2] Taihu Lab Deepsea Technol Sci, Wuxi 214082, Peoples R China
[3] South China Univ Technol, Guangzhou 510640, Peoples R China
关键词
Deep sea environment; Ring-ribbed tank; Conjugate heat transfer; Numerical analysis; Large space; PLATE;
D O I
10.1016/j.oceaneng.2024.119091
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
The ring-ribbed tank is the key equipment of cooling system of deep-sea manned submersible. The heat transfer characteristics of the outer wall and the heat transfer and flow characteristics of the inner flow channel of the ring-ribbed tank for different inlet and outlet temperatures and flow rates were studied through a water tank test. The results indicate that Nusselt number for the inner flow channel correlates with Reynolds and Prandtl numbers, while for the outer wall, it correlates with Grashof and Prandtl numbers with an overall error within 5%. A numerical study using the Realizable k-epsilon turbulence model and Boussinesq approximation of the flow-solid conjugate heat transfer is conducted, which can accurately determine the heat exchange capacity and the import and export differential pressure with an average relative error of 1.98% for hot water temperature and 7.73% for shell wall temperature. Additional simulations for determining the heat transfer capacity and flow resistance characteristics of the ring-ribbed tank in open water results demonstrate that the differential pressure and its coefficient are basically consistent with model test results. The cooling system can achieve a heat transfer rate of up to 17 kW with an external seawater flow velocity of approximately 2 knots.
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页数:14
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