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ramp function in fsi

Posted 19 lug 2018, 15:19 GMT-4 Computational Fluid Dynamics (CFD), Parameters, Variables, & Functions, Structural Mechanics Version 5.3a 0 Replies

Rishav Aryal
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Hello, I am trying to use FSI to simulate a wheel moved by flowing water in COMSOL 5.3a. I could do it for 1 sec but then it would not work for longer period. I have two studies; study 1 (time dependent) solves only for laminar flow while study 2(time dependent) solves for all physics using solution from study 1. I tried to incorporate ramp function hoping that would solve the issue but if i add ramp function in "inlet velocity", it does not even work for 2 cm/s.

The error i get is as follows:

  • Feature: Time-Dependent Solver 1 (sol2/t1) Failed to find consistent initial values. Last time step is not converged.

Any help regarding the ramp function and running the model for extended time is appreciated.

Thanks in advance. the model is attached. I had to delete the solutions due to large file size.

0 Replies Last Post 19 lug 2018, 15:19 GMT-4
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Hello Rishav Aryal

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