Transcription of FLUID MECHANICS TUTORIAL No. 3 BOUNDARY LAYER …
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FLUID MECHANICS TUTORIAL No. 3 BOUNDARY LAYER …
1 FLUID MECHANICS TUTORIAL No. 3 BOUNDARY LAYER THEORY In order to complete this TUTORIAL you should already have completed TUTORIAL 1 and 2 in this series. This TUTORIAL examines BOUNDARY LAYER theory in some depth. When you have completed this TUTORIAL , you should be able to do the following. Discuss the drag on bluff objects including long cylinders and spheres. Explain skin drag and form drag. Discuss the formation of wakes. Explain the concept of momentum thickness and displacement thickness. Solve problems involving laminar and turbulent BOUNDARY layers. Throughout there are worked examples, assignments and typical exam questions. You should complete each assignment in order so that you progress from one level of knowledge to another.
layers and these may be used to estimate the skin friction drag. Note that for this ideal example, it is assumed that the velocity is the undisturbed velocity u o everywhere outside the boundary layer and that there is no acceleration and hence no change
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