Fluid Mechanics 230 - Essay Example

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Fluid Mechanics 230

TYPES OF DRAG Form drag This could be described as the frictional force resulting from the shape of a moving object. This drag remains highly dependent on size and shape of objects; hence, the name form drag (Batchelor 2000). Bodies with larger cross-sectional designs experience higher levels of form drag than those presented with sleek design. The shape and size of a body affects the surface area of the object which comes into contact with the fluid. The experienced frictional forces results from contact between the moving object and fluid through which movement occurs. The occurrence of this drag depends on the object shape, large cross-sectional designs offers higher percentage of object contact with fluid, frictional forces inducing higher levels of form drag. Skin friction Skins friction refers to a type of drag resulting from frictional forces existing between the skin of objects and the fluid through which movement occurs. This drag arises from interaction between fluids and object surface, and remains dependent on wetted surface area when addressing occurrence within marine vehicles. This frictional force remains directly proportional to the surface area of the object’s skin contacting the fluid. The frictional force also follows the drag equation making it a coefficient of prevailing square of marine vehicle speed. ...Show more


Fluid Mechanics 230 INTRODUCTION Drag could be identified as a resultant forces causing resistance to motion in bodies moving within fluids (Tipler 2004). Unlike other frictional forces experienced in moving objects, drag forces normally remain fully dependent on velocity of objects…
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