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How to model acoustic source points?
Posted 25.03.2024, 14:15 GMT-4 Acoustics & Vibrations, Geometry, Modeling Workflow Version 6.0 1 Reply
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Hi there,
I've recently started learning COMSOL. I want to simulate sound propagation in a piping system in a 2D environment (or perhaps combine 1D with 3D later).
I have two questions:
I intend to work in the 2D area, dealing with lines and points in the geometry. I've discovered that I can assign a pipe shape and inner diameter to a line to represent my pipe. Additionally, in the materials section, I can specify the material of the pipe. Now, I want to know if there's a way to consider a fluid-filled pipe using this method. For instance, if my pipe is filled with oil, how can I assign my oil material to the inner section of the line?
I'm working with the Pipe Acoustics Transient module, and according to the COMSOL manual (Acoustics of a Pipe System with 3D Bend and Junction), they used a Volume Force as the starting point for wave propagation in the pipe system. However, they assigned this to a line rather than a point. In a simple scenario, I have a line representing my pipe filled with fluid, with a length of L, and I want to add an acoustic source point in the middle of the pipe. If everything is correct, sound propagation and pressure should reach each end of the pipe simultaneously.
Please assist me. I've spent several days searching, but I haven't been able to make any progress :/
Thanks.