|December 28, 2007, 04:28||
I intend to simulate a down draft biomass gasifier considering it as a porous bed. I would also like to get the pressure drop & temperature across the bed. I would also like to know the gas composition, CV and the temperature of the gas at the outlet.
I could model the cold porous bed and get the pressure drop and velocity profiles in the reactor. Further help me out to initiate the chemical reactions.
Kindly help me out; your inputs are highly valuable to me.
|April 1, 2011, 03:52||
CFD modelling of downdraft gasifier
Join Date: Sep 2010
Posts: 3Rep Power: 6
To, N K Ram
I am Keran patel from Ahmedabad,Studying M tech in Thermal Engg.I've ur thesis of M Tech. which u submitted in 2006-08 under the guidence of Dr. S Maji and Dr. B .B. Arora..
My Project is similiar to urs with a l'ii bit change in model.Bt i can not initiate the combustioin in my model.I kindly request u to help me out.My settings of the model are as below:-
Solver -Pressure Based
Velocity Formulation -Absolute
Gradient Option -Green-Gauss Cell Based
Porous Formulation -Superficial Velocity
Multiphase Model : Off
Number of phase -1
Model -k-epsilon (2 eqn)
k-epsilon Model -Realizable
Near-Wall Treatment -Standard Wall Functions
k-epsilon Multiphase Model -Mixture
C2-Epsilon: 1.9, TKE Prandtl Number: 1, TDR Prandtl Number: 1.2, Disperion Prandtl number: 0.75, Energy Prandtl Number: 0.85, Turb. Schmidt Number: 0.7,
Model -Species Transport
Reactions -Volumetric & Particle Surface
Options -Inlet Diffusion & Diffusion Energy Source
Turbulent -Chemistry Interaction -Finite-Rate/Eddy-Dissipation
Pressure: Operating Pressure(pascal)-101325
Gravity: Gravity- Off
Hope for the Help !
Thanks in advance
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