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S. Rutschmann, K. Ehrenfried, "Simplified Model to Estimate Forces on Track Side Objects", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 37, 2014. doi:10.4203/ccp.104.37

Keywords: potential flow theory, head pressure pulse, train passage, moving model experiments.

Summary

This paper shows a method to predict aerodynamic loads on track side objects, such as spheres or discs, induced by the head pressure wave of a passing train. The loads are calculated using potential flow theory. The results are compared with experimental data which were measured in a moving model rig using three different train geometries. It is shown that the loads on a sphere can adequately be predicted, while it is still unclear which physical effects are important for the loads on a disc. The interaction between the flow field around the train and a track side object seems mainly to be driven by linear unsteady effects. Further, the loads depend strongly on the used train head geometry.

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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 37 Simplified Model to Estimate Forces on Track Side Objects S. Rutschmann and K. Ehrenfried German Aerospace Center, Institute of Aerodynamics and Flow Technology, Göttingen, Germany doi:10.4203/ccp.104.37 purchase the full-text of this paper Full Bibliographic Reference for this paper S. Rutschmann, K. Ehrenfried, "Simplified Model to Estimate Forces on Track Side Objects", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 37, 2014. doi:10.4203/ccp.104.37 Keywords: potential flow theory, head pressure pulse, train passage, moving model experiments. Summary This paper shows a method to predict aerodynamic loads on track side objects, such as spheres or discs, induced by the head pressure wave of a passing train. The loads are calculated using potential flow theory. The results are compared with experimental data which were measured in a moving model rig using three different train geometries. It is shown that the loads on a sphere can adequately be predicted, while it is still unclear which physical effects are important for the loads on a disc. The interaction between the flow field around the train and a track side object seems mainly to be driven by linear unsteady effects. Further, the loads depend strongly on the used train head geometry. 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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