In terms of calculation for acoustics and aeraulics, the Module 1 of SILDIS software combines ease of use, speed of simulation[1], reliability[2], and versatility for the sizing of silencers with possible applications in the building sector e.g. Heating Ventilation Air Conditioning (HVAC) ) and in industry, e.g. aeraulic networks with fans or even including the intake and exhaust of turbomachines (compressors, turbines) and heat engines, as well as processes involving pressurized fluid systems (including at high temperature ), without forgetting the dust collection networks and painting booths ventilations. In addition to the variety of applications, this versatility also extends to the cross-sectional geometry of the silencers that can be modeled:
- rectangular
- square
- circular (with or without a central splitter baffle i.e. pod)
- circular with concentric rings
All parameters influencing performance are taken into account:
- the nature of the sound absorbing filling (also with resonators) can be taken into account by using materials being referenced in software libraries or entered by the user
- the nature of the fluid and the thermodynamic conditions are taken into account (the evaluation of the physical parameters is integrated in the case of air)
- the flow rate of the fluid and its direction of propagation (relative to that of sound) are considered
- robust, sophisticated models are used for the various computation routines
The results are comparable to laboratory measurements according to the standards in force cf. NF EN ISO 7235 Acoustics - Laboratory measurement procedures for ducted silencers and air terminal units - Insertion loss, flow noise and total pressure loss.
Acoustics and aeraulics - 9 minutes are enough for the complete calculation of a silencer with the SILDIS software: the proof in video.
Tutorial (9 minutes).
[1] based on Excel, the software allows the user to enter simulation parameters into designated cells and to select models from drop-down menus for various stages of the calculations. No geometry input or import and no meshing are required, and calculation results are obtained in just a few seconds, as shown by the tutorial.
[2] numerous comparisons made with predictions obtained via other methods (e.g. the finite element method - FEM -) and with measurements, yielding conclusive results across the entire frequency range corresponding to plane wave propagation (software development and validation regularly certified as compliant with the ISO 9001 Quality Management standard)