Reacting Flows

.. _Database:

Databases

.. _database_swirl:

Cambridge-Sandia Swirl Burner

Description ^^^^^^^^^^^^^^^^^^^^^^^^^

The Cambridge-Sandia Swirl burner (SwB) was used in a number of experiments on combustion in stratified flows. A full description of the experimental set up can be found in the relevant papers and in :download:this report <./databases/SwB/downloads/SwB_database_description.pdf>.

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.

.. list-table:: :widths: 30 70 :header-rows: 0

  • - |image1|
    • |image2|
  • - Cross sectional view of the burner.
    • Top view of burner exit. |

.. |image1| image:: ./databases/SwB/images/swirl-burner-plan-view-co-flow.png :height: 200 px

.. |image2| image:: ./databases/SwB/images/swirl-burner-schematic-exit.png :height: 200 px

Operating conditions ^^^^^^^^^^^^^^^^^^^^^^^^^

.. list-table:: :header-rows: 1

  • - Case
    • SFR (-)
    • phi_i (-)
    • phi_o (-)
  • - SwB1
    • 0
    • 0.75
    • 0.75
  • - SwB2
    • 0.25
    • 0.75
    • 0.75
  • - SwB3
    • 0.33
    • 0.75
    • 0.75
  • - SwB5
    • 0
    • 0.50
    • 0.50
  • - SwB6
    • 0.25
    • 1.00
    • 0.50
  • - SwB7
    • 0.33
    • 1.00
    • 0.50
  • - SwB9
    • 0
    • 1.125
    • 0.375
  • - SwB10
    • 0.25
    • 1.125
    • 0.375
  • - SwB11
    • 0.33
    • 1.125
    • 0.375

.. _Swirl_data:

Data ^^^^^^

.. _Swirl_Scalar:

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.

Datafomat: :download:`scalar_dataformat.txt <./databases/SwB/downloads/scalar_dataformat.txt>`. 

Data: :download:`burnerAverages.zip <./databases/SwB/downloads/burnerAverages.zip>`.




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. Data format: 

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

Data format: :download:`LDA_dataformat.txt <./databases/CCB/downloads/CCB1/LDA_dataformat.txt>`.

Data: :download:`LDA_ReducedMoments.zip <./databases/SwB/downloads/LDA_ReducedMoments.zip>`


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:  :download: `LSPIV_dataformat.txt <./databases/SwB/downloads/LSPIV_dataformat.txt>`.

Data:  :download:`LSPIV_average.zip <./databases/SwB/downloads/LSPIV_average.zip>` .


Surface temperature data
```````````````````````````

Bluff body surface temperatures are available as a function of radial position
Filename: radial_profile_SwB[case number]

Data format: :download: `temperature_dataformat.txt <./databases/SwB/downloads/temperature_dataformat.txt>`.

Data: :download: `SurfaceTemps.zip <./databases/SwB/downloads/SurfaceTemps.zip>`.

       
       
References
^^^^^^^^^^^^^^^^^^^^^^^^^

#. Zhou, R. and Balusamy, S. and Sweeney, M. S. and Barlow, R. S. and Hochgreb, S. (2013),
   Flow field measurements of a series of turbulent premixed and stratified methane/air flames,
   *Combustion and Flame* 160(10):2017--2028.
   [`doi:10.1016/j.proci.2014.05.029 <http://dx.doi.org/10.1016/j.proci.2014.05.029>`_]
   [:ref:`BibTeX <zhou:2013a>`]

#. Sweeney, M. S. , Hochgreb, S. , Dunn, M. J. and Barlow, R. S. (2012),
   The structure of turbulent stratified and premixed methane/air flames II: Swirling flows,
   *Combustion and Flame*, 159(9):2912--2929.
   [`doi:10.1016/j.combustflame.2012.05.014 <http://dx.doi.org/10.1016/j.combustflame.2012.05.014>`_]
   [:ref:`BibTeX <sweeney:2012b>`]

#. Sweeney, M. S., Hochgreb, S. , Dunn, M. J. and Barlow, R. S. (2012),
   The structure of turbulent stratified and premixed methane/air flames I: Non-swirling flows,
   *Combustion and Flame*, 159(9):2896--2911.
   [`doi:10.1016/j.combustflame.2012.06.001 <http://dx.doi.org/10.1016/j.combustflame.2012.06.001>`_]
   [:ref:`BibTeX <sweeney:2012a>`]

#. Euler, M. , Zhou, R. , Hochgreb, S. and Dreizler, A. (2014),
   Temperature measurements of the bluff body surface of a Swirl Burner using phosphor thermometry,
   *Combustion and Flame* 161(11): 2842--2848.
   [`doi:10.1016/j.combustflame.2014.05.006 <http://dx.doi.org/10.1016/j.combustflame.2014.05.006>`_]
   [:ref:`BibTeX <euler:2014>`]

----

.. _database_coal:

Cambridge Coal Burner
----------------------------------------------


Description
^^^^^^^^^^^^^^^^^^^^^^^^^

This document describes the database of experiments performed using coal and methane combustion in the Cambridge Coal Burner (CCB). Two series of experiments were produced:

* CCB1: no bluff body
* CCB2: with bluff body
  
Both cases have the same outer geometry, but series CCB2 is outfitted with a central bluff body to enhance flame stabilization and coal burnout.Cases with reacting flows are denoted RF, and non-reacting flow, by NRF.

Geometry

The burner consists of a tube carrying the mixture of coal, methane, oxidizer and diluent (conditions listed below), surrounded by a swirling pilot of methane gas. The geometry is available in this CAD file :download:BluffBodyConfig.zip <./databases/CCB/downloads/BluffBodyConfig.zip>. For the CCB1 case, no bluff body is present. The geometry of the extraction system may be relevant to simulations of the long flame. Details can be found in :download:ExhaustUnit.zip <./databases/CCB/downloads/ExhaustUnit.zip> .

.. list-table:: :widths: 30 30 20 :header-rows: 0

  • - |image3|
    • |image4|
    • |image5|
  • - Side view - CCB1
    • Side view - CCB2
    • Swirler geometry

.. |image3| image:: ./databases/CCB/images/CCB1_layout.png :height: 200 px

.. |image4| image:: ./databases/CCB/images/CCB2_layout.png :height: 300 px

.. |image5| image:: ./databases/CCB/images/Outer_swirler.png :height: 150 px

Operating conditions ^^^^^^^^^^^^^^^^^^^^^^^

Detailed operating conditions available in the file :download:TestMatrix.xls <./databases/CCB/downloads/TestMatrix.xls>. The co-flow outer rate is 240 slpm, the outer diameter 122.94 mm, inner diameter of 44.45 mm.

Data Sets ^^^^^^^^^^^^^^^^^^^^^^^

.. list-table:: :widths: 35 35 30 :header-rows: 1

  • - Data set
    • CCB1
    • CCB2
  • - Alumina PIV (RF = reacting, NRF = non-reacting)
    • |Al_PIV|
    • N/A
  • - High speed PIV (RF, NRF)
    • |HSPIV|
    • N/A
  • - LDA
    • |CoalLDA|
    • |LDA_Data2|
  • - Mie and OH intensities
    • N/A
    • |OH_Mie|

.. |Al_PIV| replace:: :download:AluminaPIV.zip <./databases/CCB/downloads/CCB1/AluminaPIV.zip>

.. |CoalLDA| replace:: :download:CoalLDA.zip <./databases/CCB/downloads/CCB1/CoalLDA.zip>

.. |HSPIV| replace:: :download:HSPIV.zip <./databases/CCB/downloads/CCB1/HSPIV.zip>

.. |LDA_Data2| replace:: :download:LDA_Data.zip <./databases/CCB/downloads/CCB2/LDA_Data.zip>

.. |OH_Mie| replace:: :download:OHPLIF_MieMeanRms.zip <./databases/CCB/downloads/CCB2/OHPLIF_MieMeanRms.zip>

Data formats

PIV: :download:3D_PIV_dataformat.txt <./databases/CCB/downloads/CCB1/3D_PIV_dataformat.txt>

LDA : :download:LDA_dataformat.txt <./databases/CCB/downloads/CCB1/LDA_dataformat.txt>

Mie and OH: :download:Mie_OH_dataformat.txt <./databases/CCB/downloads/CCB2/Mie_OH_dataformat.txt>

References ^^^^^^^^^^^^^^^^^^^^^^^^^

#. Balusamy, S., Schmidt, A. and Hochgreb, S. (2013), Flow field measurements of pulverized coal combustion using optical diagnostic techniques, Experiments in Fluids, 54(5):1534. [doi:10.1007/s00348-013-1534-2 <http://dx.doi.org/10.1007/s00348-013-1534-2>_] [:ref:BibTeX <balusamy:2013a>]

#. Muto, M. , Watanabe, H, , Kurose, R. , Komori, S. , Balusamy, S. and Hochgreb, S. (2015), {Large-eddy simulation of pulverized coal jet flame - Effect of oxygen concentration on NOx formation}, Fuel, (142)152–163. [doi:10.1016/j.fuel.2014.10.0698 <http://dx.doi.org/10.1016/j.fuel.2014.10.069>_] [:ref:BibTeX <muto:2015>]

#. Balusamy, S., Kamal, M. M., Lowe, S. M., Tian, B. , Gao, Y. and Hochgreb, S. (2015), Laser diagnostics of pulverized coal combustion in O2/N2 and O2/CO2 conditions: velocity and scalar field measurements, Experiments in Fluids 56(5):0723-4864. [doi:10.1007/s00348-015-1965-z <http://dx.doi.org/10.1007/s00348-015-1965-z>_] [:ref:BibTeX <balusamy:2015a>]

#. Balusamy, S., Schmidt, A. and Hochgreb, S. (2013), Flow field measurements of pulverized coal combustion using optical diagnostic techniques, Experiments in Fluids, 54(5):1534. [doi:10.1007/s00348-013-1534-2 <http://dx.doi.org/10.1007/s00348-013-1534-2>_] [:ref:BibTeX <balusamy:2013a>]

Last updated on 1 Jan 0001