Assignment 2

# Assignment 2 - Fluid Mechanics 1 Assignment 2 Due Date at...

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Fluid Mechanics 1 Assignment 2 Due Date 5/10/2009 at 5:00 PM Question 1 I. A velocity field is given by: m/s Velocity fields are plotted below, where the arrows indicate the magnitude and direction of the velocity vectors. The picture that best describes the field is: A B C D II. Consider the path that a football thrown by Brett Favre. Suppose that you are interested in the knowing how far the ball goes. Then you are interested in the: A. LaGrangian or particle view of the football B. Eulerian view of the field C. Neither LaGrangian nor Eulerian III. The Reynold’s Transport Theorem is written as: In words, this equation reads: A d V d t dt dN System CV CS V   A. The rate of change of the amount of mass in the control volume is balanced by the net rate at which mass is flowing through the control surface B. The rate of change of any arbitrary extensive property of the system is equal to the time rate of change of the arbitrary extensive property N within the control volume plus the net rate of flux of N through the control surface C. The rate of change of N is balanced by the velocity flux and the rate of change of the control volume. IV. An incompressible fluid flows steadily through the bend in the channel shown below. As a result of the bend, the velocity profile changes from the uniform profile shown at location A to a profile at location B that is linear with a maximum velocity of V B . The relation between the velocity V A and V B is A. The velocity V

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