Technical Brief: Predictions of Flow Field for Circular-Disk Bluff-Body Stabilized Flame Investigated by Large Eddy Simulation and Experiments

Author:

Guo Peiqing1,Zang Shusheng1,Ge Bing1

Affiliation:

1. School of Mechanical Engineering, Shanghai Jiaotong University, No. 800, Dongchuan Road, Shanghai 200240, China

Abstract

The objective of the current work is to shed light on simulating the flow features of nonpremixed flame stabilized by a circular-disk bluff-body with large eddy simulation technique. Two subgrid scale (SGS) models (Smagorinsky and Germano), combined with a constrained chemical equilibrium model, are applied to simulate this turbulent flame. Validation is made through the particle image velocimetry measurements. The comparison between the numerical simulation and experimental data shows that both models perform well and reproduce most of the significant features of the bluff-body flame, while the Germano SGS model performs better in prediction of turbulent fluctuations. These investigations show that it is possible to describe such flows with relatively simple turbulence and combustion models with moderate grids.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

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