Characterization of Temperature and Soot Volume Fraction in Laminar Premixed Flames: Laser Absorption/Extinction Measurement and Two-Dimensional Computational Fluid Dynamics Modeling

2018 ◽  
Vol 32 (12) ◽  
pp. 12962-12970 ◽  
Author(s):  
Liuhao Ma ◽  
Hongbo Ning ◽  
Junjun Wu ◽  
Kin-Pang Cheong ◽  
Wei Ren
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Volume Fraction ◽  
Soot Volume Fraction ◽  
Two Dimensional ◽  
Dynamics Modeling ◽  
Computational Fluid Dynamics Modeling ◽  
Laser Absorption ◽  
Extinction Measurement

Characteristic and Computational Fluid Dynamics Modeling of High-Pressure Gas Jet Injection

2004 ◽  
Vol 126 (1) ◽  
pp. 192-197 ◽  
Author(s):  
Y. Li ◽  
A. Kirkpatrick ◽  
C. Mitchell ◽  
B. Willson
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Near Field ◽  
Pressure Ratio ◽  
Gas Injection ◽  
Two Dimensional ◽  
Rarefaction Waves ◽  
Dynamics Modeling ◽  
Axisymmetric Nozzle ◽  
Computational Fluid Dynamics Modeling

The topic of this paper is the computational modeling of the gas injection process in a large-bore natural gas fueled engine. At high injection pressures, the overall gas injection and mixing process includes compressible flow features such as rarefaction waves and shock formation. The injection geometries examined in the paper include both a two-dimensional slot and an axisymmetric nozzle. The computations examine the effect of the supply pressure/cylinder stagnation pressure ratio, with ratios ranging from 3 to 80, on the velocity and pressure profiles in the near field region. Computational fluid dynamics modeling was compared with results obtained from a two-dimensional analytical method of characteristics solution and experimental results. The comparison process evaluated factors such as pressure and Mach number profiles, jet boundary shape, and shock location.

Computational Fluid Dynamics Modeling of Palm Fruit Pyrolysis in a Fast Fluidized Bed Reactor

2013 ◽  
Vol 699 ◽  
pp. 822-828
Author(s):  
P.L. Mtui
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Fluidized Bed ◽  
Volume Fraction ◽  
Pyrolysis Oil ◽  
Dynamics Modeling ◽  
Palm Fruit ◽  
Computational Fluid Dynamics Modeling ◽  
Computational Fluid Dynamics Cfd ◽  
Biomass Particles

The palm fruit biomass is introduced into the pyrolysis reactor bed and the transport equations for heat, mass and momentum transfer are solved using computational fluid dynamics (CFD) technique. The Eulerian-Eulerian approach is employed to model fluidizing behavior of the sand for an externally heated reactor prior to the introduction of the biomass. The particle motion in the reactor is computed using the drag laws which depend on the local volume fraction of each phase. Heat transfer from the fluidized bed to the biomass particles together with the pyrolysis reactions were simulated by Fluent CFD code through user-defined function (UDF). Spontaneous production of pyrolysis oil, char and non-condensable gases (NCG) confirm the observation widely reported in literature. The computer model can potentially be used to assess other candidate biomass sources also to assist design of optimized pyrolysis reactors.

scholarly journals Retraction: Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12531-12531
Author(s):  
Junjie Chen ◽  
Xuhui Gao ◽  
Longfei Yan ◽  
Deguang Xu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Methane Steam Reforming ◽  
Dynamics Modeling ◽  
Computational Fluid Dynamics Modeling ◽  
Microchannel Reactors ◽  
Methane Steam

Retraction of ‘Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production’ by Junjie Chen et al., RSC Adv., 2018, 8, 25183–25200, DOI: 10.1039/C8RA04440F.

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