Abstract
In recent years there has been a significant increase in computing performance. This has allowed companies to make more use of numerical simulation methods during the development phase, even for areas that until recently were almost unfeasible. This article presents the fundamental aspects related to Computational Aero-Acoustics for internal flow with a focus on HVAC elements. The aim was to answer questions about the computational mesh, computational models and boundary conditions.
Highlights
HVAC Acoustics in buildings is still a relatively hot topic
This approach has a positive effect on the amount of generated noise of mechanical origin, which can be reduced by a duct silencer [2]
It can only be used to observe trends, for example, to compare multiple variants. Another difference between 2D and 3D solutions is the fact that for 2D Computational Aero-Acoustics (CAA), it is necessary to operate with the so-called source correlation length
Summary
Most attention is focused on the steps to make the fan units operate most of the time in the energy-efficient area [1] This approach has a positive effect on the amount of generated noise of mechanical origin, which can be reduced by a duct silencer [2]. The noise transmitted to the room is generated primarily due to the turbulent flow and solids in crossflow. For this reason, it is assumed that the optimization of the shaped parts of the duct elements, in order to reduce the pressure loss and the regenerated noise will be soon more discussed topic. Various strategies have been developed, but one that applies to one type of task may fail for another [3]
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