form drag


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Related to form drag: Induced drag, Wave drag

form drag

n
(Aeronautics) the drag on a body moving through a fluid as a result of the shape of the body. It can be reduced by streamlining
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When the broken fiber immersed in the air flow field, the fiber are principally subjected to the air drag force, the tension force, the gravitational force, turbulence fluctuation force and buoyant force and so on, for the sake of computational simplicity, in the works mentioned above, we only considered the air drag force that the influence of the other forces are neglected, the total air drag is the sum of the friction drag and form drag due to the velocity difference between air and broken fiber, the air drag can be expressed as, respectively, by the following relations (34-38):
However, form drag would be increased when the attack angle is too large.