For simulating turbomachinery like Pelton turbines, a stationary mesh just won’t cut it. We need to account for the actual rotation of the rotor to accurately capture the fluid dynamics. That’s where dynamicMeshDict in OpenFOAM comes into play! This powerful tool allows us to define and control the motion of Read more…
OpenFOAM, a powerful Computational Fluid Dynamics (CFD) toolbox, often deals with unsteady, turbulent flows. While resolving every fluctuation can be computationally expensive and sometimes unnecessary, extracting meaningful time-averaged quantities is crucial for understanding the underlying flow physics. This is where OpenFOAM’s time-averaging function objects come in handy. This post will Read more…
The European Union’s new regulations, 2024/1834, aim to improve the efficiency and environmental impact of fans across various industries. This is a game-changer for fan manufacturers and designers, demanding a deeper understanding of fan performance and innovative solutions to meet the new standards. This is where Computational Fluid Dynamics (CFD) Read more…
The fvSchemes file is a crucial component of OpenFOAM simulations, defining the numerical schemes used for solving the governing equations. Understanding this file is essential for achieving accurate and stable solutions. Key Concepts: File Structure: The fvSchemes file has a simple structure, typically consisting of a few sections: Common Schemes: Read more…
Let’s break down how to set up a Fluid-Structure Interaction (FSI) analysis using PreCICE, OpenFOAM, and Calculix. 1. Overview and Key Concepts 2. The General Workflow 3. Detailed Steps (Example with OpenFOAM’s pimpleFoam and Calculix) 4. Key Points 5. Advanced Considerations 6. Getting Started Feel free to ask if you have more Read more…
Here’s a comprehensive guide on running OpenFOAM within Docker containers on a SLURM cluster, along with best practices and troubleshooting tips: 1. Prerequisites 2. Creating a Docker Image (if needed) 3. Writing the SLURM Script Explanation of the Script: 4. Submitting the Job Important Considerations: Example with Pre-built Image: You Read more…
Installing and Running OpenFOAM with Docker Here’s a breakdown of how to install and run OpenFOAM using Docker: 1. Prerequisites: 2. Find a suitable OpenFOAM Docker image: There are several OpenFOAM Docker images available on Docker Hub. Some popular options include: 3. Pull the image: Once you’ve chosen an image, Read more…
In the past posts about simulation schemes and function object, we talked about the possibility of setting a first or second order analysis and the possibility of running custom actions while openfoam is actually executing the simulation. This post is dedicated on automation: update OpenFOAM numerical settings automatically Given the Read more…
Introduction Mesh generation is a critical step in the simulation and modeling process for various engineering and scientific applications. Open source mesh generation software has gained significant popularity due to its accessibility and flexibility. In this blog post, we will compare four prominent open source mesh generation tools: SnappyHexMesh, Salome, Read more…
The fvSchemes file in OpenFOAM is used to specify the numerical discretization schemes used for different variables in the simulation. It controls the accuracy and stability of the simulation results. To open the fvSchemes file, navigate to the system folder in your OpenFOAM case directory and open the file with Read more…
