class6_kinematics

class6_kinematics - 9/17/2007 1 ES330, Section 2 Dr....

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Unformatted text preview: 9/17/2007 1 ES330, Section 2 Dr. Douglas Bohl 239 Camp x6683, [email protected] www.clarkson.edu/~dbohl/es330 Experimental results of the velocity and vorticity fields in the wake of an oscillating airfoil 9/17/2007 2 Outline • Kinematics – Velocity – Acceleration • Flow visualization – Streamlines, pathlines, particle trajectories • Learning Objective: Be able to calculate the acceleration at any point in a flow given the velocity field • HW #3: Please see web page • I will be out of town Tuesday and Wednesday next week. Dr. Helenbrook will be teaching in my place on Tuesday. Office hours will be held on Monday, not on Wednesday. 9/17/2007 3 Continuum Description • Reality of fluids – LOTS of molecules – All have their own motion (unlike in a solid) – Way to many to keep track of • Luckily molecules have a net motion – If you use a big enough sample of a fluid you can describe the properties within that volume – Use a fluid “particle” – tiny patch of fluid that is big enough to have the continuum satisfied – So how big? 10-9 mm 3 9/17/2007 4 Field Description • We define the properties of a fluid as a function of their location and of the time 9/17/2007 5 Eulerian / Lagrangian Description...
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This note was uploaded on 04/07/2008 for the course ES 330 taught by Professor Bohl during the Spring '08 term at Clarkson University .

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class6_kinematics - 9/17/2007 1 ES330, Section 2 Dr....

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