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How to Assign Fluid Pressure in CFD Simulations
What is the difference between relative and absolute pressure? Why does COMSOL Multiphysics® use relative pressure to solve CFD problems? Get answers here…
Viscosity Ramping Improves the Convergence of CFD Models
Viscosity ramping can help decrease the computation time for your models by solving for higher viscosities and using the solutions as initial conditions for the problem at lower viscosities.
Preventing Airborne Infection with CFD Modeling
Healthcare-associated infections affect millions of people around the globe. Airborne bacteria is one cause of patient infections that can be prevented with efficient ventilation system designs.
New Mixer Module Showcases CFD Capabilities of COMSOL
The Mixer Module provides ready-made interfaces for describing the difficult problem of laminar and turbulent flows in rotating machinery with free liquid surfaces. COMSOL has been developing different techniques for modeling CFD, moving geometries, and free surfaces during the past few years for a number of different applications. This has now culminated in the new Mixer Module that was released with version 4.4, and it clearly showcases the improved CFD capabilities of COMSOL.
The Physics of Sailing, a CFD Analysis
Of all boats, I find sailboats to be the most fascinating, especially when sails are their only means of propulsion. Kinetic energy is transferred from the wind to the sails, which results in a lift force that balances drag forces and allows the sailboat to move through the water. We are all familiar with the parts of a boat above the waterline: deck, spars, sails, and the rudder used to turn the boat (figure 1c). Not everyone pays attention to […]
CFD Applied to Two-Phase Flow, an Italian Dressing Simulation
The fact that oil and water don’t mix is something that you are probably all familiar with. At one point or another, you’ve most likely noticed what happens when you shake a bottle of say, Italian salad dressing, and the liquids mix momentarily, only to become separated again within seconds as oil bubbles rise to the surface. Creating a simulation describing how these two immiscible fluids interact is a great way to introduce computational fluid dynamics (CFD) applied to two-phase […]
Happy Birthday, Victor Babeș
Romanian biologist Victor Babeș is best known for his research on infectious diseases. But did you know he was once on track to become an actor? Learn about his fascinating life and work here.
Modeling Blood Flow in a Stenosed Pulmonary Artery
Blood flow through a stenosed pulmonary artery can be modeled by treating the stenosis as a porous medium. Learn how here.