Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
Heat Transfer

Heat Transfer

  1. All Categories
  2. Fluids - Heat Transfer
  3. Why does ANSYS Fluent report a floating point exception at the first iteration when working with the non-equilibrium thermal model for porous cell zones (NETM)?

Why does ANSYS Fluent report a floating point exception at the first iteration when working with the non-equilibrium thermal model for porous cell zones (NETM)?

Tagged: 19, conjugate-heat-transfer, fluent, fluid-dynamics, General, Heat Transfer and Radiation, heat-transfer, radiation
    • January 25, 2023 at 7:16 am
      FAQFAQ
      Participant

      The non-equilibrium thermal model (NETM) for porous zones in ANSYS Fluent requires the porosity to be smaller than 1 which is the default value. If you forget to adjust this value the solution diverges in the first iteration. Fluent also prints a warning after activating the model to remind you that this value must be adjusted.

Featured Articles

Introducing Ansys Electronics Desktop on Ansys Cloud

The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...

How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)

This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...

Introducing the GEKO Turbulence Model in Ansys Fluent

The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...

Postprocessing on Ansys EnSight

This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.

© 2026 Copyright ANSYS, Inc. All rights reserved.