Urban Microclimate Modelling Using CFD

At ENGYS, we take immense pride in delivering cutting-edge Computational Fluid Dynamics (CFD) solutions that drive success for our valued clients. One such instance involves our long-term partner SoftSim, a Bulgarian wind engineering consultancy, with yearlong experience in urban physics modelling and industrial process automation. Together, we embarked on the venture of developing a comprehensive, […]

HVAC CFD Simulation of Airborne Transmission in Classrooms

The global pandemic has highlighted the importance of indoor air quality and how innovative ventilation strategies can reduce the spread of diseases, saving lives. According to the Centers for Disease Control and Prevention (CDC), COVID-19, along with diseases such as tuberculosis, measles and chicken pox, predominantly spread by airborne transmission. This is where small droplets […]

How CFD Can Help Meet Dam Safety Regulations

Although the probability of a dam failure is often low, the consequences of one can be catastrophic. In the US, since 1980, there have been on average 24 dam failures per year, with overtopping the most common cause. Overtopping is where excess river flow causes the water level to spill over the top of the […]

How to Simulate the Piston Effect in Train Tunnels

Why do you have to yawn or swallow to equalize the pressure in your ears when travelling through a tunnel? It’s all to do with a phenomena called the piston effect. What is the piston effect? When a train enters a tunnel, it compresses the air ahead of it, as the air it displaces is […]

Wind Squall CFD Simulation with HELYX

In central Europe, in the height of summer, especially in the evening of hot days, it is not uncommon to experience heavy thunderstorms. During one such event in summer 2019, I witnessed, what looked like, a dust devil forming for a few moments, which then also ripped off the larger part of the roof of […]