Programming in OpenFOAM: Writing a Custom Boundary Condition

Categories: Engineering files, Multiphase Flow, OpenFOAM

Engineering Downloads

Level

Intermediate
Total Enrolled

2
Duration

11 minutes
Last Updated

July 8, 2025
Certificate

Certificate of completion

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How to use codedFixedValue to define a parabolic velocity profile
Programming custom boundary conditions in OpenFOAM (C++ interface)
Understanding fully developed laminar flow profiles
Comparing constant vs. developed inlet velocity effects in channel flow
Visualizing and interpreting velocity and pressure fields
Enhancing flexibility in boundary condition definitions for CFD problems

About Course

Product Overview

In this tutorial, you’ll learn how to write a custom boundary condition in OpenFOAM using the codedFixedValue feature. This step-by-step guide walks you through programming a user-defined inlet condition to model fully developed laminar flow in a rectangular channel—a classic Hagen–Poiseuille flow scenario.

The tutorial compares two inlet conditions:

A constant velocity profile
A parabolic velocity profile (representing fully developed flow)

By the end of this lesson, you’ll be equipped to define and program velocity profiles using C++ directly within OpenFOAM, giving you more control over your simulation setups.