CFX-RIF

To further strengthen our position in combustion modeling the ANSYS CFX team is working with RWTH Aachen and Advanced Combustion of Aachen, Germany to develop CFX-RIF. RIF is a software package developed by Prof. Dr. Norbert Peters and Guenter Paczko of Advanced Combustion that generates flamelets that can be used to model combustion processes. RIF, which stands for “Representative Interactive Flamelets”, is a software tool to generate steady flamelet libraries that can be used to analyze turbulent combustion processes using ANSYS CFX or CFX-TASCflow 2.12. The RIF concept has been invented and developed at RWTH Aachen by Prof. Peters and his co-workers. CFX-RIF automates the creation of the pre-integrated flamelet libraries that are required to use the flamelet combustion model in CFX-TASCflow 2.12 and ANSYS CFX.

The main benefits of the Flamelet Combustion model include:

• Better prediction of flame temperatures
• Efficient inclusion of complex chemistry kinetic schemes that describe the combustion mechanisms, only the mixture fraction transport equation and a variance equation need to be solved in addition to mass, momentum and energy equations. The mass fractions of as many as 100 intermediate species of the combustion process are predicted.
• More robust solution as compared to the Multi-Step Eddy Dissipation Combustion Models
• Emissions modeling is more complete and accurate

The graphical user interface is presented in several screen captures below.