Accelerating computations using the SLNS model in COMSOL
In micro-acoustic applications, such as hearing aids and earbuds, significant thermoviscous losses occur in narrow channels. The standard Thermoviscous Acoustics interface in COMSOL solves the coupled Navier-Stokes equations, which is computationally very expensive. In this presentation, Dr. Anne de Jong derives the Sequentially Linearized Navier-Stokes (SLNS) model. By solving the thermal and viscous fields sequentially and coupling them to a modified Helmholtz equation, the degrees of freedom are drastically reduced. For a microperforation, this results in a 9.2-fold acceleration of the simulation.
Citation for the publication
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Author: Dr. Anne de Jong, M.S. (ASCEE – COMSOL Certified Consultant)
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Conference: COMSOL Conference 2023, Munich
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Date: October 25, 2023
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Subject: Sequentially Linearized Navier-Stokes (SLNS) in Microacoustics
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