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Error message while simulating cooling of electronic chip
Posted May 5, 2021, 9:18 a.m. EDT Fluid & Heat, Computational Fluid Dynamics (CFD), Heat Transfer Version 5.6 0 Replies
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I am new to COMSOL and Heat transfer physics. I created an Air Box for cooling my antenna system and electronic chip, where the fluid is Air (Laminar flow) with mean inlet velocity to be 0.1m/s. (No slip boundary condition along the walls) (Used NON-Isothermal flow multiphysics coupling laminar and heat transfer in solids and fluids). I wanted to make a parametric analysis by changing this inlet velocity and observe the temperature difference.
However except for 0.1 m/s velocity I am receiving the following error for other inlet velocity. I am not sure what this means and what I need to change?. It would be great if someone can help me with this
Undefined value found. - Detail: Undefined value found in the equation residual vector. There are 12401 degrees of freedom giving NaN/Inf in the vector for the variable comp1.T. at coordinates: (-0.00312885,-0.00348848,0.000750958), (-0.00329311,-0.00347151,0.000602882), (-0.00313693,-0.00348252,0.000893459), (-0.0028697,-0.00341622,0.00103094), (-0.00329131,-0.00345004,0.000470919), ... There are 5991 degrees of freedom giving NaN/Inf in the vector for the variable comp1.p. at coordinates: (-0.00312885,-0.00348848,0.000750958), (-0.00314467,-0.00345428,0.000460907), (-0.00320986,-0.00358701,0.000656224), (-0.00313693,-0.00348252,0.000893459), (-0.00300292,-0.0034142,0.000919043), ... There are 12345 degrees of freedom giving NaN/Inf in the vector for the variable comp1.u. at coordinates: (-0.00312885,-0.00348848,0.000750958), (-0.00329311,-0.00347151,0.000602882), (-0.00313693,-0.00348252,0.000893459), (-0.0028697,-0.00341622,0.00103094), (-0.00329131,-0.00345004,0.000470919), ... There are 12345 degrees of freedom giving NaN/Inf in the vector for the variable comp1.v. at coordinates: (-0.00312885,-0.00348848,0.000750958), (-0.00329311,-0.00347151,0.000602882), (-0.00313693,-0.00348252,0.000893459), (-0.0028697,-0.00341622,0.00103094), (-0.00329131,-0.00345004,0.000470919), ... There are 12345 degrees of freedom giving NaN/Inf in the vector for the variable comp1.w. at coordinates: (-0.00312885,-0.00348848,0.000750958), (-0.00329311,-0.00347151,0.000602882), (-0.00313693,-0.00348252,0.000893459), (-0.0028697,-0.00341622,0.00103094), (-0.00329131,-0.00345004,0.000470919), .
Hello Ashwath Balasubramanian
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