Modeling of the microclimate of sports facilities

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Modeling of the microclimate of sports facilities

Unique buildings with very special atmospheres

Sports facilities generally belong to the class unique buildings. Without the involvement of airflow modeling methods in the analysis and evaluation of design solutions for heating and cooling systems, there is no guarantee that comfort and technology requirements will be met throughout the building volume.

Different phenomena influence the climatic parameters of these spaces

In large volume rooms, free convection flows begin to have a noticeable effect on the propagation of diffusion air streams.

In large rooms, temperature stratification can be very important

Sports facilities are complicated because they present complex phenomena such as evaporation from the surface of the water for swimming pools, sublimation on the ice for ice rinks, and scenic effects for the most prestigious events.

Sports facilities are characterized by the presence of significant heat release from spectators, lighting equipment

For sports facilities there are different areas with different values supported microclimate parameters: spectators area and sports area

Simulation CFD - Tube de courant - Paris Accord Hôtel Aréna
Analysis of the impact of air mixing
Simulation CFD - vitesse d'air des buses - Bercy
Analysis of the impact of air velocities

Application of CFD modeling to swimming pools and aquatic centers

Trichloramine diffusion study

When designing pools, various design parameters must be considered, such as air temperature, relative humidity, water temperature and surface area, and air velocity, which affect the evaporation rate of the pool water.

On the other hand, chlorine is widely used in swimming pools for its disinfecting qualities. However, it can present certain dangers when it comes into contact with organic materials. Chloramines are made by combining a chlorinated disinfectant with sweat, cosmetics and swimmers’ urine. This chemical reaction causes the development of chloramines in the air, chemical compounds that can cause respiratory, skin and eye irritation. People who work near pools, such as lifeguards, are more likely to have problems with their respiratory tra ct than ordinary people.

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To evaluate the indoor air quality, specific laws of emissions and transfer of pollutants are integrated in the software which solves an additional mass balance for each species of pollutant considered

The quality of the calculation results depends on the input data and in particular on the quality of the physicochemical emission laws. In reality, the emission law is dynamic and can depend on the temperature and the ambient hygrometry. Different levels of modeling complexity are thus possible, the first level being to use constant laws to integrate the pollutant diffusion. It is then possible to compare different ventilation systems and to identify the areas impacted by the over concentration of pollutants.

CFD modeling for sports facilities

A design, verification and sizing tool.

The modeling of air flows is carried out using three-dimensional mathematical modeling methods (CFD approach). CFD allows the analysis and evaluation of air distribution design solutions. The conformity of the parameters of the microclimate maintained in the premises of the installation is verified according to the calculated values of temperature, velocity, humidity.

Identification, if necessary, of an area with deviation of average and local values of temperature, concentration of harmful substances, humidity, speed in the premises of the installation.

In case of identification of areas with deviations or microclimate parameters different from those defined by the design teams in charge of the project, we are able to propose adjustments and original design solutions to solve these issues.

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Air conditioning : on the same subject