I created a new simulation project called 'EarPhone 1':
Check wind noise
More of my public projects can be found here.
I created a new simulation project called 'EarPhone 1':
Check wind noise
More of my public projects can be found here.
Our design is a ear phone which for bicycle rider use. It is fix on helmet belt, place in front of ear and it has a mic on bottom. We would like to know the wind noise to the mic when bicycle running.
Hi there, thank you for using the forum!
Make sure to add the troubleshooting threads to the “Project Support” section. The description of each category can be found here: Categories - SimScale CAE Forum
Regarding the project, I have a few comments:
*In order for the compressible analysis to work, you must delete all bodies instead of the flow region. You can do this in SimScale’s CAD Mode: CAD Mode | CAD Preparation & Upload | SimScale
The flow travels towards the negative x-direction, so make sure to change the input accordingly:
Unless the domain represents a box, change the “No-slip walls” to “Slip-walls”. Then the domain will be modeled as an open-air environment.
Check whether your Mach number is < 0.3. In that case, please try an Incompressible analysis instead.
Best regards,
Fillia
11:06 am
I follow you afdvise to make the 6 body into 1 body, and set the slip wall, to redo the simulation. But it still have error aas above. Please help me to correct. The project in follow link. https://www.simscale.com/workbench/?pid=8616269697522253978&mi=run%3A7%2Csimulation%3A4&mt=SIMULATION_RUN
But I don’t know where to set up ‘Mach number is < 0.3’ ? please advise
The Mach number is the speed of the case divided by the speed of sound. If this number is larger than 0.3, then the compressible analysis is the correct option
Best regards,
Fillia
I follow your previous advise to change it to 'imcompressible ’ to run Earphone 1 again. error message as this. https://www.simscale.com/workbench/?pid=150839808297911894&mi=spec%3A1f6aee32-7cb4-4e10-962a-cb050c76238c%2Cservice%3ASIMULATION%2Cstrategy%3A23&ps=analysis%2FboundaryConditions%2F2
Please advise how to correct the error in Earphone 2 which in yesterday message. Because at lease it can run 3% so I think this simulation is better than Earphone 1. Project link as below .https://www.simscale.com/workbench/?pid=8616269697522253978&mi=spec%3A86455fef-89ec-4aaa-813f-137d142987da%2Cservice%3ASIMULATION%2Cstrategy%3A4