Abstract
A multi-cone diffuser is difficult to treat in CFD analysis of the airflow in rooms, because its complicated shape tends to make complicated flow near the diffuser and needs many meshes. Authors have proposed a kind of BOX method that uses the measured velocities and turbulent parameters as the boundary conditions around the diffuser. This paper investigates the influence of the limitation of space and the non-isothermal supply airflow. CFD simulations using unstructured meshes were conducted and these influences were checked. The area where the BOX method can be applied was proposed and CFD analysis using structured meshes by BOX method was conducted as well.
