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Q. Wang, J.Y. Zuo, "Dynamic Thermal Analysis on High-Speed Railway Ventilated Brake Disc under the Effect of Air Flow", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 308, 2014. doi:10.4203/ccp.104.308

Keywords: heat dissipation, ventilated brake disc, high-speed railway, geometry, pattern, intervals.

Summary

Heat dissipation characteristics of high-speed railway have a significant impact on the safety coefficient of railway braking. Using computational fluid dynamics (CFD), based on FloEFD thermal simulation software, heat dissipation of a ventilated brake disc with cylinder pillars on the 380km/h high-speed railway was studied. According to detailed simulation analyses, particularly of the distribution pattern of solid temperature and ambient fluid temperature of the brake disc, numerical simulation method has been developed to learn the heat dissipation characteristics. On this basis, analyses enabled great insight into four potential improvement areas which focus on corresponding factors with influence on heat dissipation of the brake disc like geometry, pattern and interval of the pillars. After calculation, a new design with elliptical pillars with crossing arrangement (REP-CA) has been developed and corrected eventually. The results show that the brake disc with elliptical pillars successfully decreased the maximum solid temperature, increased the thermal volume and improved their heat dissipation characteristics.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 308 Dynamic Thermal Analysis on High-Speed Railway Ventilated Brake Disc under the Effect of Air Flow Q. Wang¹ and J.Y. Zuo² ¹Department of Mechanical Engineering, University of Pittsburgh, Pennsylvania, USA ²Institute of Railway & Urban Rail Transit, Tongji University, Shanghai, China doi:10.4203/ccp.104.308 purchase the full-text of this paper Full Bibliographic Reference for this paper Q. Wang, J.Y. Zuo, "Dynamic Thermal Analysis on High-Speed Railway Ventilated Brake Disc under the Effect of Air Flow", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 308, 2014. doi:10.4203/ccp.104.308 Keywords: heat dissipation, ventilated brake disc, high-speed railway, geometry, pattern, intervals. Summary Heat dissipation characteristics of high-speed railway have a significant impact on the safety coefficient of railway braking. Using computational fluid dynamics (CFD), based on FloEFD thermal simulation software, heat dissipation of a ventilated brake disc with cylinder pillars on the 380km/h high-speed railway was studied. According to detailed simulation analyses, particularly of the distribution pattern of solid temperature and ambient fluid temperature of the brake disc, numerical simulation method has been developed to learn the heat dissipation characteristics. On this basis, analyses enabled great insight into four potential improvement areas which focus on corresponding factors with influence on heat dissipation of the brake disc like geometry, pattern and interval of the pillars. After calculation, a new design with elliptical pillars with crossing arrangement (REP-CA) has been developed and corrected eventually. The results show that the brake disc with elliptical pillars successfully decreased the maximum solid temperature, increased the thermal volume and improved their heat dissipation characteristics. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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