Large Eddy Simulation (LES): From Turbulence Physics to Practical CFD Turbulence has always been one of the most complex and intriguing aspects of fluid dynamics. It is inherently chaotic, three-dimensional, and spans a wide range of scales—from large swirling motions that carry most of the energy to very fine structures where that energy is…

Open-Source Meshing Tools for Computational Simulations Choosing the Right Tool for the Right Scenario Meshing is one of the most critical steps in computational simulations involving fluid dynamics, structural mechanics, heat transfer, and many other continuum-based physical problems. Before a solver can compute anything, the geometry must first be divided into small computational elements…

Conjugate Heat Transfer (CHT) in OpenFOAM: From Physics to Practical Implementation Conjugate Heat Transfer (CHT) refers to thermal problems in which heat transfer occurs simultaneously in solid and fluid regions, with thermal coupling at their interfaces. In real engineering systems—such as heat exchangers, electronic cooling assemblies, turbine blades, and solar receivers—heat does not remain…

Methods to Install OpenFOAM v2412 on Ubuntu Installing OpenFOAM is the first step toward building a reliable CFD workflow. However, many users are unsure which installation method to choose. OpenFOAM provides multiple installation approaches, each designed for different use cases such as simplicity, portability, or customization. In this guide, we will install OpenFOAM v2412…

The Complete Beginner Roadmap to Learning CFD with OpenFOAM If you are new to OpenFOAM, the number of solvers, turbulence models, and dictionary options can feel overwhelming. You open it and immediately see: It is powerful — but confusing. The problem is not OpenFOAM.The problem is the lack of a clear roadmap. So instead…

Multiphase Flow Modelling: From Simple Mixture Models to Full Two-Fluid Descriptions Multiphase flows are everywhere—bubbles rising in water, sediment transport in rivers, sprays in combustion engines, boiling and condensation in heat exchangers. What makes them challenging is not just that multiple phases coexist, but that these phases may move at different speeds, interact strongly…

Understanding the Spalart–Allmaras Turbulence Model (and How to Use It in OpenFOAM) Turbulence modeling sits at the heart of practical Computational Fluid Dynamics (CFD). While the Navier–Stokes equations describe fluid motion exactly, directly resolving all turbulent scales (Direct Numerical Simulation) is computationally infeasible for most real-world engineering problems. This is where Reynolds-Averaged Navier–Stokes (RANS)…

Master CFD From Scratch Using Free And OpenTools Step 1: CAD Modelling — Designing the Geometry Every CFD project begins with defining the geometry of the system under study. This process, known as Computer-Aided Design (CAD), involves creating a virtual model of the physical object — be it an aircraft wing, a valve, or…

How Open-Source Software Can Slash Simulation Costs for India’s MSMEs by Over 60% The Micro, Small, and Medium Enterprises (MSME) sector plays a pivotal role in India’s industrial and economic landscape. It is not just a support system for larger industries, but a driver of innovation, employment, and entrepreneurship. Key Contributions of Indian MSMEs:…