Abstract
In order to ensure the safety of the ship, the explosion relief valve fitted with flame arresters for diesel engine crankcase was required to extinguish flame and reduce pressure. The pin fin took an important role in heat loss and pressure drop. In this study, innovative design of leeward surface of pin fin in flame arresters was proposed. Based on a rectangular pin fin, three typical concave and convex leeward surface shapes of pin fin were designed, which were triangular, trapezoidal elliptic shapes. Later, a numerical analytical model of 3D turbulent flow flied of periodical cubic channel was established, and the effect of leeward surfaces on heat transfer and pressure drop of pin fin was investigated. The results showed that, the concave leeward surfaces can enhance heat transfer comparing with convex ones. The pin fin with elliptic concave leeward surface had the best heat transfer performance. Concave and convex leeward surfaces of pin fin all had the great pressure drop performance. The vortices at the back of pin fins with concave windward surfaces could slow down the velocity of the airflow and enhance heat exchange. This research was of importance to guide the design of pin fin and flame arresters for explosion relief valves.
This project is supported by Public Welfare Technology Application Research Projects of Zhejiang Province (2016C31043), Zhejiang Provincial Natural Science Foundation (LY19E050008), National Natural Science Foundation of China (51606167 and 51675478) and Key research and development project of Zhejiang province (2018C01078).
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Jiang, L., Zhang, S., Shu, X., Hao, W., Ren, Y., Chen, Z. (2020). Innovative Design of Leeward Surface of Pin Fin in Flame Arresters Fitted in Explosion Relief Valve. In: Tan, J. (eds) Advances in Mechanical Design. ICMD 2019. Mechanisms and Machine Science, vol 77. Springer, Singapore. https://doi.org/10.1007/978-981-32-9941-2_24
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DOI: https://doi.org/10.1007/978-981-32-9941-2_24
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