CE 2200 Chapter : Chapter 5 CV And Continuity
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Dot product u v u v cos q u v normal unit vector, n: magnitude of one, direction is normal to the surface. Mean, or average velocity turbulent flow: the mean velocity may closely approximate the actual flow laminar flow: the mean velocity probably doesn"t approximate the actual flow. For fluids---this approach is too complicated for most systems. Control volume: region in space established to aid in solution of flow problems. Rate of change of an extensive property of the. System of fluid that is flowing through the. Rate of change with respect to time of the extensive property b of the fluid inside the control volume at time t. Flow rate of b out of the c. v. minus the flow rate of b into the c. v. ; i. e. , the net rate of flow of b from the c. v. = amount of the property ___________ db sys dt t cv d cs. Rate of increase of the property in the system.
