Gallagher, Martin (2017). Experimental investigation of the aerodynamics of a class 43 high speed train. University of Birmingham. Ph.D.
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Gallagher17PhD.pdf
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Abstract
This study aims to investigate the aerodynamic phenomena of passenger trains by undertaking a series of experimental investigations into the aerodynamics of a Class 43 high speed train (HST). A contextual research background is presented with regards to two significant aerodynamic phenomena - slipstreams and crosswinds. Model-scale experiments were undetaken on a l/25th scale HST model at the TRAIN rig moving model rig facility in order to measure slipstreams at a range of trackside positions and with different ballast heights. Crosswind effects were investigated through two model-scale tests and an extensive campaign of innovative train-based surface pressure measurements onboard an operational HST. A wind tunnel test investigated the flow field and pressure distribution around an HST power car and calculation of aerodynamic loads. A symmetrical pair of pressure taps at the train nose enabled yaw angle to be calculated at full scale. A scale-model test using a crosswind generator was undertaken and the magnitudes of aerodynamic loads compared very favorably with the wind tunnel data. The novel full scale it has been possible it isolate open-air data and gusts, and estimate the overturning forces due to crosswinds by a considered approach to surface pressure measurements.
Type of Work: | Thesis (Doctorates > Ph.D.) | |||||||||
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Award Type: | Doctorates > Ph.D. | |||||||||
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College/Faculty: | Colleges (2008 onwards) > College of Engineering & Physical Sciences | |||||||||
School or Department: | School of Engineering | |||||||||
Funders: | Engineering and Physical Sciences Research Council | |||||||||
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TF Railroad engineering and operation |
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URI: | http://etheses.bham.ac.uk/id/eprint/7269 |
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