RHOWS
High-quality physics simulations
SoundSim360
We have developed a simulation tool that can accurately predict sound propagation over vast distances, where the low frequency part is dominating due to efficient damping of high-frequency sound in the atmosphere. SoundSim360 is capable of sound simulations in complex domains including buildings. Transmission and reflections against facades are incorporated into the model. The simulation tool can also handle indoor sound propagation. The transmission of sound through walls is highly frequency dependent, and also depends on the building material in the walls and ceilings.
Wind farm simulations
Wind turbines generate high levels of infrasound (frequencies below 20 Hz). SoundSim360 takes into consideration a realistic 3D atmosphere and real world topography, with variable ground conditions. The only input is the location and sound pressure levels of the sound sources. In the animation we have simulated the infrasound propagation from “Lervik” wind farm in the south of Sweden, consisting of 7 wind turbines. Validation against accurate measurements has been performed. We present a plot with sound pressure levels over a vast domain surrounding “Lervik” wind farm, including the location of measurements.
Infrasound simulations from "Lervik" wind farm. The simulation is done with SoundSim360, and incorporates accurate weather data and topography. Infrasound has negligible atmospheric and ground damping and can propagate over vast distances.
Sound pressure levels in 1Hz, from Lervik wind farm (x marks the location of the 7 wind turbines). Validation against measurements (+). Simulation is done with SoundSim360, and incorporates accurate weather data and ground conditions.
City noise pollution
Sound simulations in cities requires, besides accurate weather conditions and topography, also an accurate treatment of the interface between air and facade. Low frequency sound is transmitted into buildings to a high degree. Sound simulation outside the Ångström laboratory in Uppsala (Sweden) is presented in the animation. Here sound transmission into the buildings is included.
Underwater noise
Boats and underwater structures (such as wind turbine foundations) generate noise that travels long distances due to the high speed of sound underwater. A significant portion of low-frequency underwater noise is also transmitted into the seafloor. The animation illustrates low-frequency noise from a submarine on the seafloor off the coast of Gotland, Sweden.
Sound simulation outside the Ångström laboratory in Uppsala. The simulation is done with SoundSim360, and incorporates accurate weather data and includes sound transmission through buildings.
Sound simulation of a submarine off the coast of Gotland, Sweden. The simulation was performed using SoundSim360 and incorporates a moving sound source and heterogeneous speed of sound, density, and attenuation in both the water and seafloor.
OUR STORY
Your Trusted Consulting Experts
25 years of research in advanced numerical methods for wave dominated problems has condensed into a high fidelity sound simulation tool capable of accurate sound level predictions in realistic applications. All relevant physics is incorporated into the model, and utilizes GPUs to achieve fast simulations.
Optimization and inverse design is employed to adress relevant problems and to improve the precision.
We are committed to delivering accurate solutions tailored to meet our clients' needs. We work in close collaboration with professionals in acoustics.
Ken Mattsson
PhD in scientific computing, chief developer and designer
Gustav Eriksson
Professor in Scientific computing, project leader and modeling expert
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