Fundamentals of fluid mechanics munson young okiishi pdf

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In fluid mechanics, plug flow is a simple model of the velocity profile of a fluid flowing in fundamentals of fluid mechanics munson young okiishi pdf pipe. In plug flow, the velocity of the fluid is assumed to be constant across any cross-section of the pipe perpendicular to the axis of the pipe.


The plug flow model assumes there is no boundary layer adjacent to the inner wall of the pipe. The plug flow model has many practical applications.

One example is in the design of chemical reactors. Essentially no back mixing is assumed with “plugs” of fluid passing through the reactor. This results in differential equations that need to be integrated to find the reactor conversion and outlet temperatures.

Other simplifications used are perfect radial mixing and a homogeneous bed structure. An advantage of the plug flow model is that no part of the solution of the problem can be perpetuated “upstream”. This allows one to calculate the exact solution to the differential equation knowing only the initial conditions.

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