CFD & AMP Center
Department of Mechanical & Aerospace Engineering
West Virginia University
E: ismail.celik@mail.wvu.edu

Advanced Simulation Tools for Combustion

Title
Advanced Simulation Tools for Combustion
 
Sponsor
DOE-National Energy and Technology Laboratory Morgantown
 
Researchers
Dr. Ismail Celik
Dr. Jaggu Nanduri
Jose Escobar & Sergio Escobar
 

Executive Summary

This study focuses on improving the models used nowadays to numerically predict combustion processes primary in the context of RANS (Reynolds Averaged Navier-Stokes) models. The present study can be divided in two parts; experimental and numerical.

The experimental section includes the installation and instrumentation of a Mini-Sidney Bluff Body Burner. The objective of this experimental work is to provide validation data for evaluation of future numerical simulations. This burner is located at NETL Pittsburgh campus.

The numerical study includes the following sub-projects:

  • Evaluation of SGS models applied in LES prediction of emissions in combustors, such as; laminar chemistry, thickened flame model, and eddy dissipation concept.
  • Improvement of current thickened flame models and the addition of more detailed chemistry models.
  • Development of a new integration technique applied to the chemical source term in the species transport and energy equations, and its application.
  • Simulation of a stream tube combustor. This study has a special focus on the effect of the size of the recirculation area in the NOx production.
  • The effects of hydrogen addition in methane-air flames. Simulations were performed using RANS with reduced chemistry models. Special focus is given to the emissions predictions.

Bluff body combustor

           

Schematic of bluff body burner         Temperature contours obtained using eddy dissipation concept

Mean species and temperature profiles at x / d = 0.60

SimVal Combustor

      

SimVal combustor geometry                   Mean and RMS Temperature Contour [K].

Stream Tube Combustor

Schematic of the stream tube combustor and the corresponding

2D numerical simulations.

Stream Tube Wall Temperature vs axial position for Vfuel=75.89 m/s, ะค=0.67

OH mass fraction contours and pathlines for 3D simulation of swirl combustor

Temperature contours and velocity vectors for 3D simulation of swirl combustor