How to specify multiple devolatilizing species for Combusting particles in FLUENT as one can select only single species as the devolatilizing species?
January 25, 2023 at 7:16 amFAQParticipant
Sometimes it is required to specify the multiple species as the evaporating species in DPM. This is one of the requirements for volatile break-up while modeling coal combustion or gasification. However, in FLUENT only one species is allowed as the evaporating species. Above limitation can be worked around using a pseudo species and a pseudo reaction. Define a pseudo species (e.g. volatile) in the mixture. Specify this species as the evaporating species. Then, define a pseudo reaction (e.g. volatile-break-up-reaction). Reactant of this reaction is the pseudo species and the products would be the required multiple species of the volatile break-up. This reaction should be faster than other reactions included in the model so that species evolved due to volatile break-up are not limiting the other reactions. This can be done by specifying large pre-exponential factor for Laminar finite rate model or large mixing rate constant, A for the eddy dissipation model. Molecular weight and standard state enthalpy for the pseudo species can be adjusted so that no heat is produced or consumed in the volatile break-up reaction.
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.
- ANSYS Fluent: Introduction to the GEKO Turbulence Model Part I
- ANSYS Polyflow: Adaptive Meshing Based on Contact
- Delete or Deactivate Zone in Fluent
- Apply Custom Material Properties in Fluent
- Aero-Mechanical Simulation of Turbomachinery Blading
- What is meant by Warning: Flow boundary zone 18 is adjacent to a solid zone?
- ANSYS System Coupling: Two Way Fluid Structure Interaction – Part 1
- Check CPU Time in ANSYS FLUENT
- Predict Gearbox Lubrication, Oil Temperature and Churning Losses using CFD Simulation
- Running Python Script from Workbench