In aerodynamics, aerodynamic drag is the fluid drag force that acts on any moving solid body in the direction of the fluid freestream flow. From the body's perspective (near-field approach), the drag comes from forces due to pressure distributions over the body surface, symbolized, and forces due to skin friction, which is a result of viscosity, denoted . Alternatively, calculated from the flowfield perspective (far-field approach), the drag force comes from three natural phenomena: shock waves, vortex sheet, and viscosity.
Read more about Aerodynamic Drag: Introduction, Theoretical Aspects of Far-field/near-field Balance
Famous quotes containing the word drag:
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—Samuel Beckett (1906–1989)