@article{ref1,
title="Wind-Drag Estimation in a Traffic Accident Involving a Motor Scooter and a Tractor-Trailer",
journal="Journal of forensic sciences",
year="2012",
author="Park, Chan-Seong and Jeon, Seung-Won and Lee, Kyu-Jung and Kim, Jun-Suk and Oh, Jae-Geun and Park, Jong-Chan and Lee, Hong-Seok and Choi, Young-Shik",
volume="57",
number="4",
pages="1108-1113",
abstract="  This case report describes a noncontact traffic accident involving a motor scooter and a tractor-trailer with a focus on the wind-drag effect. We used load cells to measure the drag force acting on a substantially similar motor scooter when a substantially similar tractor-trailer passes by it, taking into consideration various speeds of the tractor-trailer and distances between the two vehicles. A three-dimensional steady-state flow analysis was also performed by using the CFX program for computational fluid dynamics to examine the streamlines and the pressure distribution around the tractor-trailer at various speeds. From the experiment, for a separation distance of 1.0 m (3.28 ft) and a speed of 90 km/h (55.9 mph), the maximum resultant drag force is 124.5 N (28 lb); this constitutes a degree of force that could abruptly disrupt the stability in maneuvering by an operator who is unaware of the approaching tractor-trailer. In addition, a single equation that relates the tractor-trailer speed to the drag force that acts on the motor scooter was derived on the basis of the Reynolds number (Re) and the wind-drag coefficient (C(d) ): C(d)  = 1.298 × 10(-7) Re.<p /> <p>Language: en</p>",
language="en",
issn="0022-1198",
doi="10.1111/j.1556-4029.2012.02082.x",
url="http://dx.doi.org/10.1111/j.1556-4029.2012.02082.x"
}