urgent... multiphase cfd model of packed bed reactor.( VOF MODEL using)
 

hi,
i am doing project on multiphase cfd models in gas -liquid packed bed reactor,
currently i am using VOF model to study the pressure drop and liquid holdup variation in packed bed- in 2D. i was generated mesh in Gambit by using (dimension: 0.25m length and Id-12.5mm & diameter of particle 2m in side bed (particles are in non-overlapping position). I was started Fluent simulation by using this mesh but i am not getting simulation runs......can anybody suggest...is there any udf needed for vof model & how to proceed in fluent by using VOF.is there any Tutorial of VOF model related to Packed bed reactor.......send any link r mail related matter......

urgent.urgent...please send any information .
My mail id: balu.gold6@gmail.com

fluent 6.3 tutorial guide in chapter 16 explain the VOF model Thoroughly it will help you. if you haven’t this document I can send it you.

urgent.........udf help
 

thank u friend for u r suggestion
hi...
i have arisen new problem, i am using k-e turbulence model in Multiphase VOF model, i want to write udf for surface tension source(source term in momentum equation)...how to write udf for that term contained, surface tension coefficient, gradient of volume fraction of phase. i am using AIR-WATER LIQUID SYSTEM having spherical particles of 2mm diameter in 2D,dp in FLUENT SOFTWARE.

can anybody help me urgent............

i really thankful.............anybody

Help me a little about VOF
 

Dear Guy,
In this tutorial guide for patching simple geometry. How about for complex geometry (such as simulation red blood cell, elliptic, membrane...) Please help me.
Thanks

Trickle bed reactor mesh
 

Hi guys ...I want to generate a trickle bed reactor mesh using gambit 2.4 with 3 mm particle beads inside, does any body have a tutorial to guide me ? i am working on hydrodynamics and want to simulate my column using CFD...do any one have this tutorial ? or any written steps? the dimensions are 12 cm couln diameter, 2.3 m height and the flow in downward.urgent.urgent...please send any information .my mail is ghenis@mst