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getting error for failed to find a solution: singular matrix
Posted 19 feb 2018, 09:56 GMT-5 1 Reply
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hii, I am getting error 1 void equations for mesh : case 0 : empty rows in matrix in COMSOL multiphysics 5.2 during computation time. Can anyone help me for resolving this error. I am using EM waves frequency domain. According to previous discussion I have changed the conductivity from default 0 to 0.1. Still I am getting same error given below.
**Failed to find a solution. Singular matrix.
For mesh-case 0 there are 1 void equations (empty rows in matrix) for the variable comp1.emw.S2x. at coordinates: (0,0,0), ... and similarly for the degrees of freedom (empty columns in matrix). Returned solution is not converged. **
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I am getting exactly the same error message while simulating some unique shape of mutual coils in AC/DC module (magnetic field). Strange is that error message says empty rows for location (0,0,0) that I have no geometry built at that location. I have checked all my inputs to have all the required data and I reduced my geometry shape to a much simpler one but still the error is there. Appreciate any other advice. Sincerely, Soheila