An improved numerical analysis of the transient oil de-congealing process in a heat exchanger under low temperature conditions

被引：6

作者：

Park, Jaehyun ^{[1
]}

Kholi, Foster Kwame ^{[1
]}

Klingsporn, Michael ^{[2
]}

Chetwynd-Chatwin, Jason ^{[3
]}

Ha, Man Yeong ^{[1
]}

Min, June Kee ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, 2 Busandaehak Ro,63beon Gil, Busan, South Korea

[2] Rolls Royce Deutschland Ltd & Co KG, Eschenweg 11, D-15827 Blankenfelde Mahlow, Germany

[3] Rolls Royce Plc, Whittle House,WH 42,POB 3,BS34 Bristol,7QE, Bristol, Avon, England

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2021年 / 35卷 / 01期

关键词：

Computational fluid dynamics; Transient; Fuel cooled oil cooler; Oil congealing; Porous media approximation; Numerical model; Property correction; START-UP; SIMULATION; PERFORMANCE; FLOW;

D O I：

10.1007/s12206-020-1239-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present study, an improved heat exchanger model is proposed to efficiently analyze the cold oil removal process inside a fuel-cooled oil cooler. When exposed to low temperature condition, oil within a heat exchanger begins to congeal, preventing oil flow and causing loss of cooling. The conventional heat exchanger models, however, shows limits in reflecting the highly varying viscosity effects due to large temperature difference. To overcome this, the conventional porous media model was rewritten with the friction and Colburn j-factors that include the temperature dependent property variation. The property correction method by Shah and Sekulic [31] was added to enhance the prediction accuracy. Also, a relief valve model based on the porous media approximation is developed. The developed models were validated against the experimental data. Transient three-dimensional numerical simulations are carried out to analyze the effects of operating conditions on de-congealing phenomenon inside the FCOC.

引用

页码：391 / 406

页数：16

共 33 条

[31] Analysis of the main influencing factors of waste heat utilization effectiveness in the tank storage receiving process of waxy crude oil under dynamic liquid level conditions
Sun, Wei
Zhang, Xudong
Liu, Bingxue
Zhao, Lixin
Cheng, Qinglin
Wang, Zhihua
RENEWABLE ENERGY, 2024, 228
[32] THERMODYNAMIC ANALYSIS AND COMPARISON OF SINGLE EFFECT WATER-LITHIUM BROMIDE ABSORPTION HEAT TRANSFORMER UNDER THE HIGH- AND LOW-TEMPERATURE CONDITIONS
Hao, Zhaolong
Ma, Xuehu
Lan, Zhong
HEAT TRANSFER RESEARCH, 2015, 46 (04) : 399 - 415
[33] Transient experiments on fast reactor core thermal-hydraulics and its numerical analysis Inter-subassembly heat transfer and inter-wrapper flow under natural circulation conditions
Nishimura, M
Kamide, H
Hayashi, K
Momoi, K
NUCLEAR ENGINEERING AND DESIGN, 2000, 200 (1-2) : 157 - 175

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