Learning Forum

[bojan.nikolic.2]

Hi everyone,

I'm encountering  persistent errors when trying to analyze my model in ANSYS HFSS:

[error] Seeding mesh, process mesh3d : Unexpected internal software error. Please contact Ansys technical support.

[error] Solving adaptive frequency ..., process hf3d error: Matrix solver exception: file I/O failure. Please contact Ansys technical support.

This message started appearing after I introduced a small non-modal "mesh box" (40mm x 60mm x 40mm) into the model. Inside this box, I assigned a length-based mesh operation, restricting element length to 1mm. My initial mesh settings are otherwise at default.

My 3D model is a digital twin of a moisture sensor. I'm running an Optimetrics simulation where a small conductive ball moves to 12 different positions within this mesh box, around the sensor.  I'm trying to calculate the impedance of the model at 1 MHz and 100 MHz.

Here are my system specifications and what I've tried:

• RAM: 128 GB (95% limit set in HFSS)
• Processor: 13th Gen Intel(R) Core(TM) i9-13900K @ 3.00 GHz
• OS: Windows 11
• Storage: C: 1TB (149GB free), D: 4TB (1.67TB free)
• Cores tried: Varied from 4 to 16, without success.

 

Any suggestions on how to overcome this problem would be immensely appreciated. This is an urgent project, and any help before the weekend would be extremely beneficial.

Many thanks,

Bojan