Wind tunnel test of car

Wind tunnel test of car

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Credit: TAKESHI TAKAHARA/SCIENCE PHOTO LIBRARY

Caption: A prototype car being tested in a wind tunnel at Mazda, Japan. The smoke streams indicate the general behaviour of the air flow around the car and are used to assess the coefficient of drag (CD), which expresses the resistance of the car moving through the air. Tiny woolen strings are also attached to the frame. These are used to show the air flow patterns on a smaller scale close to specific points such as the windscreens, air intakes for cooling and the wheels.

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Keywords: aerodynamics, car design, car test, drag coefficient, engineering, motor-car motorcar, technology, wind tunnel, wind tunnel test

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