f15_mud - Lecture F15 Mud: Uniform ow, sources, sinks,...

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Lecture F15 Mud: Uniform flow, sources, sinks, doublets (27 respondents) 1. In the freestream+source case, if V increases, will the picture change? (1 student) The streamline pattern depends only on the ratio Λ /V . So let’s say you double both Λ and V , all the velocities will double, but the streamline pattern won’t change. If you change only V , then the streamline pattern will change. 2. How do we model more complicated flows like airfoils or wings? (2 students) With more complicated arrangements of sources, sinks, vortices, and doublets. The most complicated 3-D models might have thousands of sources or doublets. The nec- essary bookkeeping must be done by computer programs. 3. How do we select the source, sink, doublet, etc. required to model a speci±c flow? (2 students) In our examples we superimposed a source or doublet of prescribed strength with a freestream of prescribed strength. We then obtained the shape of the implied body via the dividing streamline. In aerodynamic applications, the problem is somewhat in
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This note was uploaded on 01/28/2012 for the course AERO 16.01 taught by Professor Markdrela during the Fall '05 term at MIT.

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f15_mud - Lecture F15 Mud: Uniform ow, sources, sinks,...

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