Identification and Suppression of Noise Sources Around High Speed Trains
نویسندگان
چکیده
منابع مشابه
A Review of Recent Studies on Simulations for Flow around High-Speed Trains
Fluid flow around bluff bodies occurs in numerous fields of science and engineering, such as flows pass vehicles, cables, towers and bridges. These flows have been studied experimentally and numerically for the last several decades. The investigation of flow around high-speed trains is an important application of bluff bodies. Fluid flow, aerodynamic forces and moments, separation and wake regi...
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The observed difference in perceived annoyance caused by train and highway noise at the same averaged noise level, has led to the introduction of the ‘railway bonus’. This bonus has found its way to the noise legislation in many countries, leading to more relaxed restrictions on time averaged noise levels, LAeq. With the introduction of high-speed trains and train-like transportation systems ba...
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With speed increasing in high-speed trains, due to limitations of other types of brakes, aerodynamic brake has become an important braking method. In this task to make better use of brake’s panel different configurations are examined and the best panel shape which provides the reasonable drag coefficient is introduced. The results of simulations are carried out with the computational fluid dyna...
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In December 2010, Eurostar International Ltd. awarded Siemens a contract for ten interoperable 16-car highspeed trains. These trains are based on Velaro®, the world’s most highly diversified high-speed platform. Starting in 2014, these trains will be added to the existing Eurostar fleet operating on the London–Paris–Brussels line running through the Eurotunnel between Great Britain and the Euro...
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Speed is the created air flow as well as slipstream effects as the trains move. These effects can have some level of impact on fuel and energy efficiency of the train, but their other important outcome is the emergence of turbulent flows at higher speeds which can cause aerodynamic drag forces followed by noise and vibration. Thus, slipstream effects have significant importanc...
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ژورنال
عنوان ژورنال: Engineering Applications of Computational Fluid Mechanics
سال: 2013
ISSN: 1994-2060,1997-003X
DOI: 10.1080/19942060.2013.11015459