Introduction

In this tutorial, ANSYS FLUENT's density-based implicit solver is used to predict the time-dependent flow through a two-dimensional nozzle. As an initial condition for the transient problem, a steady-state solution is generated to provide the initial values for the mass flow rate at the nozzle exit.

This tutorial demonstrates how to do the following:

• Calculate a steady-state solution (using the density-based implicit solver) as an initial condition for a transient flow prediction.

• Define a transient boundary condition using a user-defined function (UDF).

• Use dynamic mesh adaption for both steady-state and transient flows.

• Calculate a transient solution using the second-order implicit transient formulation and the density-based implicit solver.

• Create an animation of the transient flow using ANSYS FLUENT's transient solution animation feature.