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Users can directly listen to the computed sound pressure levels which improves the interpretation of the results, and various enhancements are brought to the picking function of Actran VI. In addition, enhanced visualization of boundary conditions, such as displacement, rotation, point load and moments, and equivalent beam profile, validation of an analysis, and faster results visualization are some of the features that make Actran VI easier to use for modeling and post-processing. Several new result quantities are supported in this release, including indicators such as the Overall Sound Levels and mean value, and t onal character of the signal when plotting octave or 1/3 octave curve.
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Dual-parallelism capability available to combine the benefits of different types of parallelism.Map CFD results that are either periodic in space or symmetric increasing flexibility for flow interpolations.Translate information from Nastran input files into equivalent Actran data blocks, which can save considerable time during pre-processing.Thanks to the innovative integration method for mapping the vibration levels in a radiation analysis, a coarser acoustic mesh can capture the vibration levels more accurately, reducing the computation time and resources.The effect of the presence of the structure or surrounding objects can thus be taken into account which improves the fidelity of the numerical model. A diffuse sound field excitation can now be generated by a summation of plane waves in presence of the exterior fluid.
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Heterogeneous turbulent boundary layers can be used to handle decorrelation effects between parietal pressures along different loaded sub-surfaces.With support for directive microphone, users can model sensitivity of microphones to the directivity and frequency of incoming acoustic fields.It can be used to simulate an excitation from a neighboring acoustic component to take into account installation effects on the acoustic radiation by coupling an Actran computation of the near free field with an Actran DGM computation of the installed far field. New boundary conditions are supported in the Actran DGM module including a Thompson condition.Support for semi-empirical Miki formulation lets engineers take advantage of this simple to use formula to model porous materials.
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This technique is attractive from a computational point of view for high frequencies with an accuracy level comparable to infinite elements.