An experimental study of recirculation zones on a bluff-body stabilized nonpremixed flame Prapti Mahandari Mechanical Engineering, Engineering Faculty,

Slides:

Advertisements

Similar presentations

A mathematical model of steady-state cavitation in Diesel injectors S. Martynov, D. Mason, M. Heikal, S. Sazhin Internal Engine Combustion Group School.

Advertisements

Learning to Become a Professional Practitioner in Building Construction Management and Property Sidney Newton The University of New South Wales Faculty.

Away from the recirculation zone, L MIN and L MODE : Decreased with T air, and, increased with Re air Were found not to be sensitive to U inj /U air Everything.

Indian Institute of Technology Bombay Why you should study a course on “Combustion” Introduction of the Combustion.

MAE 5310: COMBUSTION FUNDAMENTALS

Some Experiments on Thermo - Acoustics of RIJKE Tube with Geometric Modifications and Forced Vorticity S.D. Sharma Aerospace Engineering Department IIT.

FEMLAB Conference Stockholm 2005 UNIVERSITY OF CATANIA Department of Industrial and Mechanical Engineering Authors : M. ALECCI, G. CAMMARATA, G. PETRONE.

Laminar Flame Theory By Eng. Mohamad Okour UINVERSITY OF JORDAN MECHANICAL ENGINEERING DEPARTEMENT.

Laminar Premixed Flames and Diffusion Flames

Flame Stabilization.  In order to accomplish commercial combustion, the supply velocity of the reactant mixture is desired to be extremely high; it is.

1 A global partner in engineering services and product information.

General Concepts for Development of Thermal Instruments P M V Subbarao Professor Mechanical Engineering Department Scientific Methods for Construction.

1 MAE 5310: COMBUSTION FUNDAMENTALS Adiabatic Combustion Equilibrium Examples September 19, 2012 Mechanical and Aerospace Engineering Department Florida.

1 LES of Turbulent Flows: Lecture 9 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Fall 2014.

Laminar Premixed Flames A flame represents an interface separating the unburned gas from the combustion products. A flame can propagate as in an engine.

DIFFUSION FLAME DYNAMICS AT ELEVATED PRESSURES J. Bassi, H.G. Darabkhani*, H.W. Huang and Y. Zhang School of Mechanical, Aerospace and Civil Engineering,

LES Combustion Modeling for Diesel Engine Simulations Bing Hu Professor Christopher J. Rutland Sponsors: DOE, Caterpillar.

LES of Turbulent Flows: Lecture 10 (ME EN )

MAE513 Spring 2001 Prof. Hui Meng & Dr. David Song Dept. of Mechanical & Aerospace Engineering Advanced Diagnostics for Thermo- Fluids Laser Flow Diagnostics.

Direct numerical simulation study of a turbulent stably stratified air flow above the wavy water surface. O. A. Druzhinin, Y. I. Troitskaya Institute of.

Ghent University - UGent Department of Flow, Heat and Combustion Mechanics Simulations of hydrogen auto-ignition Ivana Stanković.

An Experimental Study of Hydrogen Autoignition in a Turbulent Co-Flow of Heated Air C.N. Markides & E. Mastorakos Hopkinson Laboratory, Department of Engineering,

CE 1501 CE 150 Fluid Mechanics G.A. Kallio Dept. of Mechanical Engineering, Mechatronic Engineering & Manufacturing Technology California State University,

Transport Equations for Turbulent Quantities

Autoignition in Turbulent Flows Christos Nicolaos Markides and Epaminondas Mastorakos Aiming to accurately predict and control the occurrence of the phenomenon.

Motor Control Theories

Formulation of Characteristic Equations for Instruments P M V Subbarao Professor Mechanical Engineering Department Clues for Design of an Instrument to.

Zhaorui Li and Farhad Jaberi Department of Mechanical Engineering Michigan State University East Lansing, Michigan Large-Scale Simulations of High Speed.

Farhad Jaberi Department of Mechanical Engineering Michigan State University East Lansing, Michigan A High Fidelity Model for Numerical Simulations of.

Design & Thermo Chemistry of Turbo Combustor P M V Subbarao Professor Mechanical Engineering Department Design for performance, safety and Reliability…..

SECTION 1 Chapter 1 The science of physics. Objectives Students will be able to : Identify activities and fields that involve the major areas within physics.

An Experimental Study of Autoignition in Turbulent Co-Flows of Heated Air C.N. Markides & E. Mastorakos Hopkinson Laboratory, Department of Engineering,

0 Local and nonlocal conditional strain rates along gradient trajectories from various scalar fields in turbulence Lipo Wang Institut für Technische Verbrennung.

Modeling and Validation of a Large Scale, Multiphase Carbon Capture System William A. Lane a, Kelsey R. Bilsback b, Emily M. Ryan a a Department of Mechanical.

Elektro 041 Analysis of Acoustic Spectra Reflecting Ion Transport Processes in Glassy Electrolytes P. Hockicko a), P. Bury a), S. Jurečka b), M. Jamnický.

Xin Xi. 1946: Obukhov Length, as a universal length scale for exchange processes in surface layer. 1954: Monin-Obukhov Similarity Theory, as a starting.

A PPLIED M ECHANICS Lecture 01 Slovak University of Technology Faculty of Material Science and Technology in Trnava.

Experimentation in Computer Science (Part 1). Outline  Empirical Strategies  Measurement  Experiment Process.

Unione Industriale Torino

1 LES of Turbulent Flows: Lecture 15 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Fall 2014.

1 LES of Turbulent Flows: Lecture 16 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Fall 2014.

Experimental Investigation of Limit Cycle Oscillations in an Unstable Gas Turbine Combustor* Timothy C. Lieuwen ^ and Ben T. Zinn # School of Aerospace.

WIND LOADS ON BUILDINGS

School of Mechanical Engineering FACULTY OF ENGINEERING School of Mechanical Engineering FACULTY OF ENGINEERING Aerodynamic Design Optimization Harvey.

Biology Mr. Noelker. Introduction to Biology  Bio – Life  Ology – Study of  What do biologists do?  Study the diversity of life  Research diseases.

Heat release modeling FPVA-based model V. Terrapon and H. Pitsch 1 Stanford PSAAP Center - Working draft.

High Fidelity Numerical Simulations of Turbulent Combustion

Turbulence Models Validation in a Ventilated Room by a Wall Jet Guangyu Cao Laboratory of Heating, Ventilating and Air-Conditioning,

Definition and Branches of Science and Physics

1 LES of Turbulent Flows: Lecture 12 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Fall 2014.

Flow Similarity and Model Testing Geometrical similarity: similar geometry. Kinematic similarity: flow pattern around the model should be similar to...

Convection Heat Transfer in Manufacturing Processes P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Mode of Heat Transfer due to.

1 LES of Turbulent Flows: Lecture 7 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Spring 2011.

Fast Pyrolysis of Biomass using Concentrated Solar Radiation Emily Beagle Graduate Mentor: Daniel Mosiman Faculty Mentor: Dr. Yuan Zheng University of.

1 LES of Turbulent Flows: Lecture 13 (ME EN ) Prof. Rob Stoll Department of Mechanical Engineering University of Utah Spring 2011.

Turbokraft Program conference 2011 COMB-1 Experimental investigation of syngas combustion at high pressure Lund University Ivan Sigfrid & Ron Whiddon.

Presented to: International Aircraft Materials Fire Test Working Group By: Robert Ochs Date: Wednesday, October 21, 2009 Federal Aviation Administration.

Methods of Science Chapter 1 Section 3.

AFOSR – Theoretical, Numerical, and Experimental Investigations of the Fundamental Processes that Drive Combustion Instabilities in Liquid Rocket Engines.

On the Hierarchical Scaling Behavior of Turbulent Wall-Flows

Topic 1 Cool flames Problems:

Numerical Simulation of Premix Combustion with Recirculation

Definition of An Instrument

T. Trimpe What's Wrong? Lab Safety Challenge #1 T. Trimpe

The Nature and Methods of Science

List things that you consider to be not Lab Safe. (Minimum of 5 items)

Methods of Science Chapter 1 Section 3.

Studies of High-Pressure Acoustic Combustion Instabilities in Hydrocarbon-Oxygen Liquid-Propellant Rocket Engines Based on Reduced Chemical-Kinetic Mechanisms.

Scientific Method.

General Principles 4/10/2019.

Presentation transcript:

An experimental study of recirculation zones on a bluff-body stabilized nonpremixed flame Prapti Mahandari Mechanical Engineering, Engineering Faculty, University of Indonesia

Theory: Motivated by the LES work of Kempf et al, 2005 (and similar) –Bluff –body increase turbulence flow –“Turbulence kinetic energy is insufficient in the context of Smagorinsky subgrid model combine with the dynamic procedure of Germano Experiment: Sidney Bluff-Body Burner, 1998 –Velocity and scalar statistic –Structure of the recirculation zone is depend on the flow field

Bluff-Body Stabilized Nonpremix Flame Quartz Tube: Insulation: Blanket, ‘Jacketed’ Tube, Heat Exchanger Injectors& Bluff-body Fuels: H 2, C 2 H 2, C 2 H 4, n-C 7 H 16 OPTICAL MEASUREMENT IMAGE AND SPECTROSCOPY Quartz Tubes: Insulation: Blanket, ‘Jacketed’ Tube Injector & 3 Bluff-bodies: Fuels: C 2 H 4 only OPTICAL MEASUREMENT IMAGE AND SPECTROSCOPY Fixed Bluff-body3 Different Bluff-Bodies Schema

OBJECTIVES Aforementioned results are not entirely consistent This is a reflection of a more general situation: –Insufficient current knowledge concerning,Thermodynamic of flame in the recirculation zone –Limited number of relevant, well characterized experiments for validation – THUS – In order to understand the fundamental underlying physics of the coupling between a bluff body and the recirculation zone, we experimentally: –Observe the recirculation zone on the bluff-body –Investigate the themodynamic properties of flame of the bluff-body –Results directly available for comparison with the LES

INDEPENDENT VARIABLES: EXPERIMENTAL ACCURACY