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fluorescence (TPLIF).
fluorescence (TPLIF).


{|align="center" border="1" width="600"
 
|+ align="bottom"|<b>Table EXP-A Summary description of all test cases</b>
{|align="center" border="1" width="700"
|+ align="bottom"|<b>Table EXP&nbsp;&ndash;&nbsp;A&nbsp;&nbsp;</b>Summary description of all test cases
!align="center"|Name
!align="center"|Name
!align="center"|GNDPs
!align="center"|GNDPs
!align="center"|PDPs (Problem Definition Parameters)
!align="center" colspan="2"|PDPs (Problem Definition Parameters)
!align="center"|MPs (Measured Parameters)
!align="center" colspan="2"|MPs (Measured Parameters)
|-
|&nbsp;||align="center"|Re||align="center"|Fuel jet composition
|align="center"|Pilot flame composition||align="center"|Detailed data
|align="center" width="150"|DOAPs
|-
|valign="top"|<b>EXP1</b>||align="center" valign="top"|22400
|valign="top"|25% of methane (CH<sub>4</sub>) and 75% of air
|valign="top"|C<sub>2</sub>H<sub>2</sub>, H<sub>2</sub>, air, CO<sub>2</sub> and N<sub>2</sub>
|valign="top"|
 
<math>\langle U\rangle, \langle U_{rms}\rangle, \langle V\rangle,
\langle V_{rms}\rangle, \langle\eta\rangle,</math>
 
<math>\langle T\rangle,
\langle Y_{H_2 0}\rangle, \langle Y_{O_2}\rangle, \langle Y_{N_2}\rangle,
\langle Y_{H_2}\rangle,</math>
 
<math>\langle Y_{CO}\rangle, \langle Y_{CO_2}\rangle,
\langle Y_{CH_4}\rangle, \langle\eta_{rms}\rangle,</math>
 
<math>\langle T_{rms}\rangle, \langle Y_{{H_2O}_{rms}}\rangle,
\langle Y_{{O_2}_{rms}}\rangle,</math>
 
<math>\langle Y_{{N_2}_{rms}}\rangle,
\langle Y_{{H_2}_{rms}}\rangle, \langle Y_{{CO}_{rms}}\rangle,</math>
 
<math>\langle Y_{{CO_2}_{rms}}\rangle, \langle Y_{{CH_4}_{rms}}\rangle</math>
 
|align="center"|Axial profiles
 
''T<sub>max</sub>'' , ''z/D (T<sub>max</sub>&nbsp;)''
 
L<sub>const</sub>(&eta; , Y<sub>CH<sub>4</sub></sub> , Y<sub>O<sub>2</sub></sub>)
 
L<sub>const</sub>(Y<sub>H<sub>2</sub>O</sub> , Y<sub>CO<sub>2</sub></sub>)
 
Y<sub>H<sub>2</sub>, max</sub> , ''z/D'' (Y<sub>H<sub>2</sub>, max</sub>&nbsp;)
 
Y<sub>CO, max</sub> , ''z/D'' (Y<sub>CO, max</sub>&nbsp;)
 
RMS<sub>max</sub>
 
''z/D'' (RMS<sub>max</sub>&nbsp;)
 
Radial profiles
 
''x/D''&nbsp;=&nbsp;15, 30, 45
 
''F<sub>max</sub>'' , ''U<sub>max</sub>''
 
''r''<sub>&frac12;</sub>(''&eta;'') , ''r''<sub>&frac12;</sub>(''U''&nbsp;)
|}
 
 
{|align="center" border="1" width="700"
|+ align="bottom"|<b>Table EXP&nbsp;&ndash;&nbsp;B&nbsp;&nbsp;</b>Summary description of all measured parameters
!align="center"|MP1||align="center"|MP2||align="center"|MP3||align="center"|DOAPs or other miscellaneous data
|-
|align="center" valign="top"|''U'', ''V'', ''u''&nbsp;&prime;, ''v''&nbsp;&prime; (ms<sup>-1</sup>)
|align="center" valign="top"|''&eta;'', ''T'', ''&eta;''&nbsp;&prime;, ''T''&nbsp;&prime; (m<sup>2</sup>s<sup>-2</sup>)
|align="center"|''Y''<sub>N<sub>2</sub></sub>, RMS(''Y''<sub>N<sub>2</sub></sub>)
 
''Y''<sub>O<sub>2</sub></sub>, RMS(''Y''<sub>O<sub>2</sub></sub>)
 
''Y''<sub>H<sub>2</sub>O</sub>, RMS(''Y''<sub>H<sub>2</sub>O</sub> )
 
''Y''<sub>H<sub>2</sub></sub>, RMS(''Y''<sub>H<sub>2</sub></sub>)
 
''Y''<sub>CH<sub>4</sub></sub>, RMS(''Y''<sub>CH<sub>4</sub></sub>)
 
''Y''<sub>CO</sub>, RMS(''Y''<sub>CO</sub> )
 
''Y''<sub>CO<sub>2</sub></sub>, RMS(''Y''<sub>CO<sub>2</sub></sub>)
 
''Y''<sub>OH</sub>, RMS(''Y''<sub>OH</sub> )
 
''Y''<sub>NO</sub>, RMS(''Y''<sub>NO</sub> )
|}
|}


==TEST CASE EXP1==
==TEST CASE EXP1==
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|[[Image:AC2-09_fig3b.gif|350px]]
|[[Image:AC2-09_fig3b.gif|350px]]
|-
|-
|colspan="3" align="center"|Fig. 3. Mean and RMS inlet profiles of the axial velocity.
|colspan="3" align="center"|'''Fig. 3:''' Mean and RMS inlet profiles of the axial velocity.
|}
|}


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===Measured Data===
===Measured Data===
<!--{{Demo_AC_Test_Data}}-->
The velocity data (in ASCII format) can be obtained by contacting Prof. Andreas Dreizler,
TU Darmstadt (dreizler@csi.tu-darmstadt.de).
 
The scalar data are available at http://www.sandia.gov/TNF/DataArch/FlameD.html
 
===References===
===References===
<references/>
<references/>
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----
----
{{ACContribs
{{ACContribs
|authors=Andrzej Boguslawski
|authors=Andrzej Boguslawski, Artur Tyliszczak
|organisation=Technical University of Częstochowa
|organisation=Częstochowa University of Technology
}}
}}
{{ACHeader
{{ACHeader
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© copyright ERCOFTAC {{CURRENTYEAR}}
© copyright ERCOFTAC 2011

Latest revision as of 15:42, 11 February 2017

Front Page

Description

Test Data

CFD Simulations

Evaluation

Best Practice Advice

SANDIA Flame D

Application Challenge AC2-09   © copyright ERCOFTAC 2024

Overview of Tests

The velocity measurements were performed with two-component fiber-optic laser Doppler anemometer (Dantec). All the details of the flow field measuring techniques applied in Sandia Flame D experiment are explained in[1]. Measured scalars for Sandia D Flame include temperature, mixture fraction, N2, O2, H2O, H2, CH4, CO, CO2, OH and NO. Experimental methods and measurement uncertainties are outlined in[1] Spontaneous Raman scattering of the beams from two Nd:YAG lasers (532 nm) was used to measure concentrations of the major species. The Rayleigh scattering signal was converted to temperature using a species-weighted scattering cross section, based on the Raman measurements. Linear laser-induced fluorescence (LIF) was used to measure OH and NO, and the fluorescence signals were corrected on a shot-to-shot basis for variations in Boltzmann fraction and collisional quenching rate. The concentration of CO was measured by Raman scattering and by two-photon laser-induced fluorescence (TPLIF).


Table EXP – A  Summary description of all test cases
Name GNDPs PDPs (Problem Definition Parameters) MPs (Measured Parameters)
  Re Fuel jet composition Pilot flame composition Detailed data DOAPs
EXP1 22400 25% of methane (CH4) and 75% of air C2H2, H2, air, CO2 and N2

Axial profiles

Tmax , z/D (Tmax )

Lconst(η , YCH4 , YO2)

Lconst(YH2O , YCO2)

YH2, max , z/D (YH2, max )

YCO, max , z/D (YCO, max )

RMSmax

z/D (RMSmax )

Radial profiles

x/D = 15, 30, 45

Fmax , Umax

r½(η) , r½(U )


Table EXP – B  Summary description of all measured parameters
MP1 MP2 MP3 DOAPs or other miscellaneous data
U, V, u ′, v ′ (ms-1) η, T, η ′, T ′ (m2s-2) YN2, RMS(YN2)

YO2, RMS(YO2)

YH2O, RMS(YH2O )

YH2, RMS(YH2)

YCH4, RMS(YCH4)

YCO, RMS(YCO )

YCO2, RMS(YCO2)

YOH, RMS(YOH )

YNO, RMS(YNO )


TEST CASE EXP1

Description of Experiment

The Application Challenge includes just one test case, Sandia Flame D with defined Reynolds number of the fuel jet and the fuel and pilot flame compositions as given in Table EXP-A.

Boundary Data

The inlet mean and fluctuating velocity at the distance x/D=1 from the burner are shown in Fig.3. The inlet parabolic profile had a maximum at the centre of the fuel nozzle of Umax = 62 m/s. The pilot flame bulk velocity Upilot = 11.4 m/s and the coflow velocity Ucfl = 0.9 m/s.

AC2-09 fig3a.gif   AC2-09 fig3b.gif
Fig. 3: Mean and RMS inlet profiles of the axial velocity.

Measurement Errors

The flow field measurement statistical errors are estimated in[1] as below 5% for the mean velocities and within 10% for fluctuating components. The scalar measurement errors are estimated and analyzed in[2]. The relative uncertainty (not including statistical noise or potential effects of spatial averaging) is estimated to be within 2% for the Raman measurements, 5% for OH, 5% for CO, and 10% for NO.

Measured Data

The velocity data (in ASCII format) can be obtained by contacting Prof. Andreas Dreizler, TU Darmstadt (dreizler@csi.tu-darmstadt.de).

The scalar data are available at http://www.sandia.gov/TNF/DataArch/FlameD.html

References

  1. 1.0 1.1 1.2 Schneider Ch., Dreizler A., Janicka J., Hassel E.P., "Flow field measurements of stable and locally extinguishing hydrocarbon-fuelled jet flames", Combustion and flames, 135, pp. 185-190, 2003
  2. Barlow R.S., Frank J.H., Proc. Comb. Inst., 27:1087,1998




Contributed by: Andrzej Boguslawski, Artur Tyliszczak — Częstochowa University of Technology

Front Page

Description

Test Data

CFD Simulations

Evaluation

Best Practice Advice


© copyright ERCOFTAC 2011