Zbornik radova Koridor 10 - Kirilo Savić

3rd International Scientific and Professional Conference
CORRIDOR 10 - a sustainable way of integrations
Figures 4 and 5 give the pressure distribution along train length, for cross-section 1 and pressure
distribution in the train’s plane of symmetry for the speed of 50 m/s.
As it can be seen from the obtained results, pressure distribution on the train cross-section is
symmetric related to the train’s plane of symmetry by slip angle of =0 o .
Figure 5 represents the pressure distribution for the points of the front train section and top, in the
train’s plane of symmetry and slip angles of = -10 o , 0 o and 10 o . The figures illustrate that the
stagnation point in the plane of symmetry is on the spot where Cp has maximum positive value. Flow
separation occurs in the spots where the curve moves away from abscissa. The figure illustrates that
this is behind the stagnation point and behind the section 6 (figure 2b) [7,8,9,10].
Figure 4: Pressure distribution along train’s cross-section 1
The stagnation point is moved from the train’s plane of symmetry to the windy lateral side, whereas
the flow speed of front top edge and front lateral edge on the windy side is increased. The curve
distance from abscissa in the zone of points 4, 5 and 6 is increased by increasing the slip angle .
That dimension represents the pressure fall on the top surface. The flow separation occurs near point
7, resulting in repeated flow approaching after that.
a)
b)
Figure 5: Pressure distribution in the train’s plane of symmetry a), and along train length b)
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