Over-expanded Nozzle

Created using ANSYS 16.2

Disclaimer:

This problem was inspired by the work of Balasubramanyam Sasanapuri, Manish Kumar & Sutikno Wirogo (ANSYS Inc.) on the "Simulation of flow through Supersonic Cruise Nozzle: A validation study". 

Everything was created from scratches, but the geometry was based on the pictures presented on that workshop. That work does not provide details on how the mesh was created, and there are very few words about the solver configuration. Therefore this tutorial is only inspired by that workshop, and all the results and methods presented here were obtained from the author's learning, experience and testing.

Learning Goals

In this tutorial, you will learn to:

• (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

We want to simulate an over-expanded nozzle in FLUENT, and try to obtain the cool "Diamond Shock" pattern shown in the this figure:

For that, we need to design a Nozzle that has a measured exit pressure smaller than the ambient pressure. 

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

Go to all FLUENT Learning Modules