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CFD laminar flow + particle tracing
Posted 14 nov. 2021, 12:33 UTC−5 Fluid & Heat, Computational Fluid Dynamics (CFD), Particle Tracing for Fluid Flow 0 Replies
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Hello there everybody! In the last weeks I've been struggling with a simulation, here are the details:
1. I want to simulate an aerosol passing through the nasal cavity;
2. to do so I have created a 2d simplified model of the nasal cavity, which can be found in attachment. The left-side edge is the nostril, the right-side edge is the pharynx;
3. for the domain I have chosen air as material;
4. to model the airflow I have set up a single-phase laminar flow physics, selecting the nostril as inlet and the pharynx as outlet;
5. to simulate the breathing process I have imposed as fluid orthogonal velocity (for the inlet) the function 
where U_max = 5.895 m/s and T = 5 s;
6. to model the particles in the airflow I have set up a particle-tracing physics, specifying particle's density (2200 kg/m^3) and diameter (1 um);
7. the inlet for the particles was once again the nostril edge, the release times given by range(T, 0.1, 2T);
8. the study I chose was a time-dependent one, with selected times range(0, 0.1, 2T);
9. I have tried and changed every parameter of the simulation to make it run successfully, but every time the solutor didn't converge.
Please help me in any way, I'm terribly frustrated. If I can add anything to make the problem clearer let me know! Thanks in advance and bye!
Attachments:
Hello Andrea Flora
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