Our services

Actiflow performs detailed CFD simulations to analyze airflow patterns and cooling efficiency within datacenter rooms. Each project starts with the creation of an accurate 3D model, including elements such as:

• • CRAH units
  • Server racks
  • Hot and cold aisle configurations
  • Raised floor and ceiling plenums
  • Perforated tiles and air leakage paths

By explicitly modeling these components, we can realistically simulate air recirculation and temperature distributions throughout the facility.

Based on defined boundary conditions, we evaluate both reliability and energy efficiency:

• • Reliability analyses include “what-if” scenarios such as CRAH unit failure, partial system outages, or significant increases in heat load.
  • Cost efficiency is optimized by tuning the CRAH system to handle failure scenarios without excessive safety margins. This approach helps reduce the Power Usage Effectiveness (PUE) of the datacenter while maintaining thermal safety.

In some projects, clients ask us to also optimize the cooling system during build out, when heat loads are below 100% and often unevenly distributed. Our simulations then form the basis for practical recommendations, such as optimal CRAH settings or adjustments to the room layout (e.g. perforated tile placement). This allows clients to reduce operating costs without risking SLA violations.

Wind effects on air handling units

To identify and mitigate the risks of short circuiting of hot air, Actiflow performs wind simulations that account for the building geometry and surrounding environment. For more information, please check our dedicated Wind Engineering page on this subject.