Case Study: Gruner Roschi achieves better classroom ventilation design with SimScale

Gruner Roschi AG determined the best architectural solution through parallel processing with SimScale

Gruner Roschi AG, a Swiss HVAC engineering and building performance simulation firm, needed to design a cost-efficient, eco-friendly, low-tech classroom ventilation concept for a new building. To evaluate different window and heating configurations without relying on mechanical ventilation, the team turned to SimScale’s cloud-based CFD and convective heat transfer simulation platform.

Using SimScale, Gruner Roschi tested four design variants with 5–10 simulations per variant, running dozens of mesh and setting combinations in parallel. The simulations, which ran for 8–17 hours each on 8–32 cores, showed that the tilted upper-window design delivered the best airflow and ventilation, while the heating system had little impact. SimScale gave Gruner Roschi fast, high-quality results in less than a day and helped them confidently choose the best architectural solution.

Gruner Roschi

Mario Flühmann

Member of Executive Board