Session: 04-15 Combustion Modeling III

Paper Number: 127414

127414 - Numerical Investigation (H2/CH4) of an Industrial Gas Turbines for NOx Prediction and Validation 

Controlling the production of NOx and maintaining a stable combustion operating regime for a wide variety of fuels is the prime motive in the industrial gas turbine development phase. The well-established numerical practices are necessary for the development of gas turbine combustors by minimizing the need for experiments. The first part of the paper presents the design process to develop the next-generation combustors by performing lab-scale experiments at atmosphere conditions for the screening designs. Then the experiments are carried out at high pressure and temperatures to understand the combustion operating regime for any fuel flexibility design offerings. Then the paper is focused mainly on modeling guidelines for NOx prediction and validation cases are performed at lab scale and full-annular test rig conditions.  Commercial CFD package, Fluent is used for the prediction of temperature and mixing behavior across the domain. Performed a baseline CFD analysis to understand the flow characteristics and emissions for the fuel compositions of pure H₂ /CH4 and the blending conditions.  The Unsteady CFD LES assessment for various burner configurations is performed for both atmospheric and pressurized conditions. The numerical practices reported in the paper are good at predicting pressure loss, mixing behavior, temperature behavior, and NOx emissions with reasonable accuracy. Several configurations have been evaluated numerically & performance of a such system is validated by experiments at high pressure, and high temperatures.

Presenting Author: Arun A K Baker Hughes

Presenting Author Biography: 15+ years of Turbo machinery experience in the Design/Testing/Validation of Gas turbine combustor for fuel flexibility, emissions reduction and improved turndown capability. And has experience in secondary flows and Heat Transfer (HT) design of Heavy duty and Aeroderivative GT's.

Authors:

A. K. Arun Baker Hughes
M. Rajesh Baker Hughes
M. Cerutti Baker Hughes
D. Pampaloni Baker Hughes