CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Biomass Gasifier

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   December 28, 2007, 04:28
Default Biomass Gasifier
N K Ram
Posts: n/a
Dear All,

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.

  Reply With Quote

Old   April 1, 2011, 03:52
Default CFD modelling of downdraft gasifier
New Member
Join Date: Sep 2010
Posts: 3
Rep Power: 8 is on a distinguished road
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:-

Settings :

Solver -Pressure Based
Formulation -implicit

Space -2D
Velocity Formulation -Absolute
Gradient Option -Green-Gauss Cell Based
Porous Formulation -Superficial Velocity
Multiphase Model : Off
Number of phase -1

-Energy Equation

Viscous Model
Model -k-epsilon (2 eqn)
k-epsilon Model -Realizable
Near-Wall Treatment -Standard Wall Functions
k-epsilon Multiphase Model -Mixture
Model Constants
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,

Species Model
Model -Species Transport

Reactions -Volumetric & Particle Surface
Options -Inlet Diffusion & Diffusion Energy Source
Turbulent -Chemistry Interaction -Finite-Rate/Eddy-Dissipation

Operating Condition
Pressure: Operating Pressure(pascal)-101325

Gravity: Gravity- Off

Hope for the Help !

Thanks in advance is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems bout CFD model of biomass gasification, Downdraft gasifier wanglong FLUENT 2 November 26, 2009 00:27
biomass gasifier simulation rayy CD-adapco 5 June 9, 2007 04:58
combustion model in biomass gasifier rayy FLUENT 1 January 23, 2007 14:15
Biomass Downdraft Gasifier modeling Aly FLUENT 2 March 30, 2005 12:20
Modelling of Biomass gasifier Sudhahar FLUENT 1 March 26, 2004 05:50

All times are GMT -4. The time now is 01:05.