Abstract
Due to huge-power aircraft development and more electronic devices applied onboard, high heat flow density and uneven thermal distribution are becoming new problems. One new try is adding an air-lubricating oil radiator as the secondary cooling component but there are still few reports on its research. Therefore, this paper proposes a newly-design plate-fin air-lubricating oil radiator different from tube-fin or shell-tube conventionally used in previous engine system. This radiator is arc, and equipped in internal surface of air intake. Numerical and experimental analyses were carried out on fin performance. Their results agreed well with average error of 13% on thermal resistance. Then heat and flow behaviors of oil side were presented with different structures and sizes of flowing passage. According to all research, optimized radiator is gained with fin spacing of 3.76 mm, fin thickness of 2 mm, single flowing path with width of 13 mm and gradient inlet and outlet. Its heat dissipation of 28.35 kW and pressure loss of 2.2 MPa can meet actual working requirements. The research proves an air-lubricating oil radiator with arc structure and layout mode of internal surface to be feasible, which is a new but efficient cooling scheme and can lead to an innovative but wide use in modern aircrafts.
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References
Chen C.H., Ge Q.J., Li J., et al., Study on aeroengine mechanical system technology, Aeroengine, 2015, 41(5): 86–91 (in Chinese).
General aviation manufactures association, 2016 General Aviation Statistical Databook & 2017 Industry Outlook, https://doi.org/gama.aero/facts-and-statistics/statistical-databook-and-industry-oulook/, 2017 (accessed on June 6, 2017).
Dong Y.F., Huang M., Li R.Q., Overview of the development of general aviation engines. Journal of Xi’an Aeronautical University, 2017, 35(5): 8–13 (in Chinese).
Willenborg K., Klingsporn M., Tebby S.T., et al., Experimental analysis of air/oil separator performance, Proceedings of ASME Turbo Expo 2006: Power for Land, Sea and Air. New York, USA: ASME, 2006, pp.: 1–11.
Farrrall M., Simmons K., Hibberd S., A numerical model for oil film flow in an aeroengine bearing chamber and comparison experimental data. Journal of Engineering for Gas Turbines and Power, 2006, 128(1): 111–117.
Farral M., Numerical modeling of two phase flow in a simplified bearing chamber. The University of Nottingham, England, 2000.
Zhao N., Wang L., Optimum design of helicopter lubricant heat exchanger based on genetic algorithm. Journal of Machine Design, 2014, 31(1): 36–41 (in Chinese).
Yang C.X., Zhang L.N., Guo H., Investigation of performance of an engine oil cooling system. Journal of Aerospace Power, 2003, 18(6): 813–818 (in Chinese).
Li G.Q., Gao H.X., Xing J., Investigation of calculation method of fuel-oil radiator performance curve cluster. Aeroengine, 2009, 35(5): 1–7 (in Chinese).
Gu J., Calculating method and experimental verification of heat transfer characteristics for tube and shell type fuel and oil heat exchanger. Aeroengine, 2013, 39(1): 65–69 (in Chinese).
Zhou Y., Gao H.X., Yu J.Z., et al., Analysis of dynamic performance of cross flow heat exchangers for helicopters. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(8): 922–926 (in Chinese).
Zhu C.L., Ning X.W., Liquid cooling system for high-powered avionics. Journal of Nanjing University of Aeronautics & Astronautics, 2005, 37(2): 203–207 (in Chinese).
Yuan X.G., Developing trend discussion of environmental control systems of high performance military aircraft. Acta Aeronautica ET Astronautica Sinica, 1999, 20(6): 1–3 (in Chinese).
Wang C.S., Zhang Q., Zhu Y.M., Packaging technology for micro-chip module. Mircoelectronic Technology, 2000, 28(4): 40–45 (in Chinese).
Chen X., Li Y.S., Bi R.L., The status and development trends of thermal design technology for supercomputer. Electronics Process Technology, 2002, 23(6): 231–235 (in Chinese).
Wang Y.T., Thermal analysis and application research of electronic element, Xi’an Northwestern Polytechnical University, China, 2004 (in Chinese).
Wang A.L., Wang C.H., Jiang F., et al., Research on improving schemes of environment control system for airplane. Proceedings of China Aviation Association, Beijing, China, 2000: 66–70 (in Chinese).
Kay W.M., London A.L., Compact heat exchangers, New York: McGraw-Hill, 1984.
Chen C.T., Chen H., Multi-objective optimization design of plate-fin heat sinks using a direction-based genetic algorithm. Journal of the Taiwan Institute of Chemical Engineers, 2013, 44: 257–265.
Wu H.H., Hsiao Y.Y., Huang H.S., et al., A practical plate-fin heat sink model. Applied Thermal Engineering, 2011, 31: 984–992.
Hou Y.Q., Tang G.H., Thermal-hydraulic-structural analysis and design optimization for micron-sized printed circuit heat exchanger. Journal of Thermal Science, 2019, 28(2): 252–261.
Cai H.K., Qian Y.Y., Hou L., et al., Virtual design and analysis with multi-dimension coupling for engineering machinery cooling system, Science China Technological Sciences, 2015, 58(1): 117–122.
Liao Y.D., Zhuo J.W., Zhang Y.L., et al., Heat flow characteristics of a newly-designed cooling system with multi-fans and thermal baffle in the wheel loader. Applied Science, 2017, 7(3): 231–243.
Acknowledgments
The presented work was supported by the Natural Science Foundation of Fujian Province of China (Grant No. 2018D0018), and CAS Key Laboratory of Cryogenics, TIPC (Grant No. CRYO201708).
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Cai, H., Weng, Z., Liao, Y. et al. Research on an Arc Air-Lubricating Oil Radiator Equipped in Internal Surface of Air Intake for the Aero Engine. J. Therm. Sci. 29, 687–696 (2020). https://doi.org/10.1007/s11630-019-1121-9
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DOI: https://doi.org/10.1007/s11630-019-1121-9