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In this tutorial, you will learn to:

• Obtain the diamond shocks on a nozzle using an axisymmetric geometry.
• Apply more advanced concepts of Compressible Flows and generate a more sophisticated simulation
• Qualitatively verify the CFD results from FLUENT by comparing the contour plots to the expected shape. The Verification & Validation section will give insights on how one could get a more precise comparison with real data and other more accurate simulations.
• (e.g.: Determine the displacements and stresses in a bike crank using 3D FEA capabilities in ANSYS Mechanical)
• (e.g.: Verify the finite-element results from ANSYS by refining the mesh and also comparing with hand calculations)

Problem Specification

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For that, we need to design a Nozzle that has a measured exit pressure smaller than the ambient pressure. Therefore, the nozzle is "too big" and ended up expanding the flow too much. The flow, trying to accommodate to that will form an oblique shock outside the nozzle

Another characteristic of over-expanded nozzle is that the "plume" of the jet gets contracted, opposed to an under-expanded nozzle where the plume "diverges" in the radial direction. 

Go to Step 1: Pre-Analysis & Start-Up

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