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" ERROR #004100018, Fatal overflow in linear solver." In Transient CFD. |
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August 13, 2024, 10:03 |
" ERROR #004100018, Fatal overflow in linear solver." In Transient CFD.
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#1 |
New Member
cheap person
Join Date: Mar 2024
Location: New Delhi, India
Posts: 22
Rep Power: 2 |
Transient CFD Analysis of Rotor and Stator | Time Transformation | Ansys CFX
Hi there, I'm trying to do a simulation of {impeller + diffuser}. no of blades in impeller, diffuser is 15 and 25 respectively. 1. The following image shows the Boundary conditions of the simulation: 2. The following image shows the basis setting of Transient blade row model of the simulation: but while processing the simulation it shows an error, as shown in Picture: Your efforts will be warmly appreciated. cheap person |
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August 13, 2024, 12:28 |
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#2 |
Senior Member
Hamid Zoka
Join Date: Nov 2009
Posts: 293
Rep Power: 18 |
Hi,
divergence could be due to the large pressure difference i.e. from 1 to 5 bar. This huge presusre gradient can causae problem particularly at early iterations where flow field is not properly formed. You need a really good initial solution to tackle the issue. Also you can check convergence with lower pressure differences. Best |
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August 13, 2024, 14:43 |
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#3 |
Senior Member
Arjun
Join Date: Mar 2009
Location: Nurenberg, Germany
Posts: 1,285
Rep Power: 34 |
What he said.
Check if you have some potential flow based initialization. QUOTE=Hamidzoka;873366]Hi, divergence could be due to the large pressure difference i.e. from 1 to 5 bar. This huge presusre gradient can causae problem particularly at early iterations where flow field is not properly formed. You need a really good initial solution to tackle the issue. Also you can check convergence with lower pressure differences. Best[/QUOTE] |
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cfd analysis, impeller, transient analysis, turbo machinery |
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