Application99 Diffusion Analysis of Material

General:
Femtet ver.2022 has had a new function of diffusion analysis which handles passive scalar.
This example analyzes a distribution of nitrogen concentration in the experimental room where nitrogen of 100% concentration has been generated.

Analysis Model:
The container on the desk at the center of the experimental room is set to generate gas. Inflow/outflow conditions are set in the room where local ventilation by draft chambers, air conditioning, and air venting are simulated.

Result:
The result shows nitrogen concentration is low in the vicinity of air conditioners, air vents, and local ventilators.
The result also shows nitrogen concentration is high at the back of a desk where air stagnates or flows in the direction opposite to the airflow of the air conditioner.