Journal of
Faculty of Civil Engineering


FACULTY JOURNALS
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CONFERENCE PROCEEDINGS
5th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2017 , 2017.y., pp. 535-543


EXPERIMENTAL DETERMINATION OF AIR RESISTANCE IN THE TUNNEL AT HIGH – SPEED RAILWAYS
 
DOI: 10.14415/konferencijaGFS2017.057
UDC: 624.195
CC-BY-SA 4.0 license
Author : Lukić, Dragan; Dimitrijević, Jelena; Đurić, Dijana
 
 Summary:
 This paper discusses a very complex problem at high speed rails, which is the resistance of the air in the tunnel. Shows the procedure for experimental determination of the resistance. Air circulations caused by the passage of a train through the tunnel are tested experimentally and numerically with the intention of aerodynamic occurence for better understand and determination of their sizes. Experimental techniques for measuring the position and the value of air pressure are extremely complex. The original research related to determining the form of diagrams pressure, depending from the moving speed and distance of train forehead from the entrance in the tunnel. Experimentally was established the manner in which the pressure occurs during train entering in the tunnel and when it continues movement along the tunnel. Depending on the method for measuring air resistance in the tunnel, results of ekspreimental research are shown on prototype. In this paper are shown the results of experimental measurements in the tunnel Linkou (given in the work of Yung-Yen Ko-a [2]).
 
 Keywords:
 high-speed railway, tunnel, air resistance, measuring, prototype