Consider water flow around a circular cylinder, of diameter (D) and length (l). In addition to geometry,
Question:
Consider water flow around a circular cylinder, of diameter \(D\) and length \(l\). In addition to geometry, the drag force is known to depend on liquid speed, \(V\), density, \(ho\), and viscosity, \(\mu\). Express drag force, \(F_{D}\), in dimensionless form as a function of all relevant variables. The static pressure distribution on a circular cylinder, measured in the laboratory, can be expressed in terms of the dimensionless pressure coefficient; the lowest pressure coefficient is \(C_{p}=-2.4\) at the location of the minimum static pressure on the cylinder surface. Estimate the maximum speed at which a cylinder could be towed in water at atmospheric pressure, without causing cavitation, if the onset of cavitation occurs at a cavitation number of 0.5 .
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Fox And McDonald's Introduction To Fluid Mechanics
ISBN: 9781118912652
9th Edition
Authors: Philip J. Pritchard, John W. Mitchell