Other sectors

Fans & turbines, Maritime, HVAC systems, Industrial processes

Our field of work is not limited to a few sectors or industries. We can add value to any development related to fluid dynamics or airflow. 

Some examples:

Fans and Turbines

We analyze and design both axial and centrifugal fans. Axial fans often involve the design of the blades optimized for a specific application. In addition to the blades, centrifugal fans are also concerned with the design of the housing and the interaction between the blades and the housing. Design and optimization is initially done on the basis of CFD simulations with which we visualize the airflow. If possible, we also take measurements to validate our design and we can experimentally optimize the fan design for minimal noise and vibration.

We also work in particular on the aerodynamic design of the blades for (wind) turbines. Our experience ranges from small wind turbines for private use to large multi-megawatt machines with blades of 100 meters in length.

Windmill biotoop

In the Netherlands, historical wind mills are also subject to the interaction with the urban structures. For instance, the addition of new (high-rise) buildings in the proximity of a windmill’s biotope, can seriously hinder the operation and safety of the windmills.

When developing new buildings in the environment of an old windmill, it is therefore necessary to conduct research into the mill biotope and thus into the impact of the development on the windage of the mill. There is a simple mill biotope formula that indicates the maximum building height in the vicinity of a mill. Once this maximum building height is exceeded, a study based on CFD simulations is required to calculate the precise reduction in windage of the windmill. In this way we can together ensure that these windmills can continue to function.


In the maritime sector, we work on both the design of ships and the analysis of water flow in locks and harbors. We conduct various aspects of a ship. In addition to the hydrodynamic design of the hull, we also look, for example, at the distribution of exhaust gases around the ship, at the optimal operation of HVAC systems for cooling or ventilation of interior spaces or at the risk of the water sloshing in a jacuzzi on a luxury yacht.

HVAC (heating, ventilation & air conditioning)

As part of our building physics activities, we research the best configuration of an HVAC system for a specific space, but we also work with manufacturers to develop new HVAC systems for multiple applications. An HVAC system basically consists of a housing containing a fan and a heat exchanger. Often the challenge is to minimize the pressure drop across this system. The pressure drop is mainly determined by the positioning of the components in the housing, the design of the housing, the air flow rate through the system and the location of the inlet and outlet. Depending on the preconditions, all these aspects can be optimized for a minimum pressure drop and thus a minimum energy consumption.

Industrial Processes

Within industrial processes, gas and liquid flows play a major role. Just think of the flow of oil and gas through pipelines or storage tanks, the mixing of gases or liquids, combustion processes, etc. It is very useful to gain insight into the processes which involves gas and liquid flows. This not only allows you to increase the efficiency of the process, but also, for example, to achieve higher homogeneity, better estimate the duration of the process, or reduce the energy consumption of the process.

Gas and liquid flows as part of industrial processes are very complex to model. It often involves different substances, whether or not in different phases, in which thermal effects can also play a role. Actiflow has years of experience in simulating multi-phase and multi-species flows, particle flows, mixing and filtering processes, flow through pipes, etc.

Please contact us if you would like to discuss if our expertise can help you solve your problem.

Our projects