Cambridge-Sandia Swirl Burner Database

Cambridge-Sandia Swirl Burner Database

 

Description

This document describes the Cambridge-Sandia Swirl burner (SwB) used in experiments detailed in the references, and the format and usage of the data generated during those experiments. A full description of the experimental set up can be found in the relevant papers and here.

Geometry

The burner consists of three concentric tubes, the inner one capped by a ceramic bluff-body. The inner and outer channels are fed by separate flow meters with given equivalence ratios.The outer mixture can be split between a tangential or axial inlet, leading to variable swirl. An outer, low velocity flow surrounds the burner.

Side view

 

Top view

 

Operating conditions

Case Swirl flow ratio (%) ϕi (-) ϕo (-) SR (-)
SwB1 0 0.75 0.75 1
SwB2 0.25 0.75 0.75 1
SwB3 0.33 0.75 0.75 1
SwB5 0 1 0.50 1
SwB6 0.25 1 0.50 1
SwB7 0.33 1 0.50 1
SwB9 0 1.125 0.375 1
SwB10 0.25 1.125 0.375 1
SwB11 0.33 1.125 0.375 1

Scalar data

The data is provided in simple text format, as described in the tables below. Zip files contain the dataset for all operating conditions.

 

Filename: Condition_[case number]_Axial_Position_[distance from inlet]_mm_Mean_And_ Variances.csv.

Data format: see table below.

Data: burnerAverages.zip.

Scalar data format
Variable Name Description Units
x x distance from the centreline mm
Yi i (species name) species mass fraction -
Α alpha thermal diffusivity m2/s
c c progress of reaction based on temperature -
∇ c dc surface density function 1/m
χ chi scalar dissipation 1/s
ρ rho density kg/m3
T T temperature K
∇ T dT temperature gradient K/m
ϕ phi equivalence ratio -
Z Z mixture fraction -

Velocity data - LDA

 

All mean and RMS for the LDA results are given as reduced moments of velocities in the two directions as text files. Z is the axial position, with velocity components U, V and W for the radial, axial and tangential velocities, respectively.

Filename: [c]SwB[case number]_z[axial position in mm]_[velocity i][velocity j]_MeanAndRMS.txt

Data format: see table below.

Data: LDA_ReducedMoments.zip .

LDA data format
Column Name Description Units
Radial position x distance from centerline mm
Axial position z distance from burner exit mm
U velocity U velocity in radial direction m/s
V velocity V velocity in axial direction m/s
W velocity W velocity in tangential direction m/s

Velocity data - 2DPIV

 

All mean and RMS for the PIV results are given as reduced moments of velocities in the two directions as text files.

Filename: Mean quantities: [c]SwB[case number]_Mean RMS quantities: [c]SwB[case number]_RMS

Data format: see table below.

Data: LSPIV_average.zip .

PIV data format
Column Name Description Units
Radial position x distance from centerline mm
Axial position z distance from burner exit mm
U velocity U velocity in radial direction m/s
V velocity V velocity in axial direction m/s

Surface temperature data

 

Bluff body surface temperatures are available as a function of radial position

Filename: radial_profile_SwB[case number]

Data format: see table below.

Data: SurfaceTemps.zip .

Surface temperature
Column Name Description Units
Radial position r distance from centerline mm
Temperature T temperature K
Mean standard deviation meanstddeviation variance averaged over a circle of a given radius K
Standard deviation of means stddeviationofmeans variance relative to the mean radial temperature K

Scalar measurements

@article{Zhou2013,
author = {Zhou, Ruigang and Balusamy, Saravanan and Sweeney, Mark S. and Barlow, Robert S. and Hochgreb, Simone},
doi = {10.1016/j.combustflame.2013.04.007},
issn = {00102180},
journal = {Combustion and Flame},
keywords = {Laser Doppler anemometry,Particle image velocimetry,Velocity field,co-annular bluff body burner,lean stratified combustion,turbulent combustion},
month = oct,
number = {10},
pages = {2017--2028},
publisher = {The Combustion Institute.},
title = {{Flow field measurements of a series of turbulent premixed and stratified methane/air flames}},
url = {http://linkinghub.elsevier.com/retrieve/pii/S001021801300151X},
volume = {160},
year = {2013}
}                            
@article{Sweeney2012,
author = {Sweeney, Mark S. and Hochgreb, Simone and Dunn, Matthew J. and Barlow, Robert S.},
doi = {10.1016/j.combustflame.2012.05.014},
issn = {00102180},
journal = {Combustion and Flame},
keywords = {lean stratified combustion,turbulent combustion},
month = jul,
number = {9},
pages = {2912--2929},
publisher = {The Combustion Institute.},
title = {{The structure of turbulent stratified and premixed methane/air flames II: Swirling flows}},
url = {http://linkinghub.elsevier.com/retrieve/pii/S0010218012001794},
volume = {159},
year = {2012}
}

Velocity measurements

@article{Sweeney2012a,
author = {Sweeney, Mark S. and Hochgreb, Simone and Dunn, Matthew J. and Barlow, Robert S.},
doi = {10.1016/j.combustflame.2012.06.001},
issn = {00102180},
journal = {Combustion and Flame},
keywords = {lean stratified combustion,turbulent combustion},
month = jun,
number = {9},
pages = {2896--2911},
publisher = {The Combustion Institute.},
title = {{The structure of turbulent stratified and premixed methane/air flames I: Non-swirling flows}},
url = {http://linkinghub.elsevier.com/retrieve/pii/S0010218012001800},
volume = {159},
year = {2012}
}                         
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