Benchmark Experimental Database for Multiphase Combustion Model Input and Validation: A Users Follow-Up.
Benchmark Experimental Database for Multiphase
Combustion Model Input and Validation: A Users
A4 - Real Fuels/Paper A21;
Combustion Institute/Western States, Central States and
Eastern States. Fourth (4th) Joint Meeting of the U.S.
Sections. Hosted by The Eastern States Section of the
Combustion Institute and Drexel University. A4 - Real
Fuels/Paper A21. March 20-23, 2005, Philadelphia, PA,
1-6 pp, 2005.
combustion; combustion models; validation; computational
fluid dyanmics; verification; FT-IR; simulation;
Optimization of the performance of industrial combustion
systems is relying increasingly on computational models
and simulations to provide relevant process information
in a cost-effective manner. Although computational fluid
dynamics (CFD) offers a cost-effective alternative to
experiments, the accuracy of the CFD models must first
be assured. This is accomplished by two means:
verification and validation. This paper describes a
benchmark case suitable for validation of multiphase
combustion models and submodels. The benchmark includes
a reference spray combustor to provide well-defined
input and boundary conditions, enabling measurements to
characterize the fuel spray, combustion air, wall
temperatures, exhaust gas temperatures and species
concentrations. The characteristics (i.e., size,
velocity, volume flux, etc.) of the methanol spray were
determined using phase Doppler interferometry.
Fourier-transform infrared spectroscopy was used to
measure species concentrations in the reactor exhaust
and the conversion of methanol. The inlet combustion air
was characterized using particle image velocimetry and a
five-hole pitot probe. The measurements constitute a
database sufficiently complete for code validation;
subsequently, several research groups have carried out
simulations of the facility to varying degrees of
success. This paper describes the development of the
database and some of the modeling issues and needs.