Types of flows and geometries


-- stationary/instationary

Mainly steady, some unsteady

-- 2D/3D

Both 2D and 3D problems

-- laminar/turbulent

Only turbulent flows

-- compressible, in-compressible

Only in-compressible flows

-- turbulent: models
              k-e
              RNG k-e
              Re stress
              k-w
              wall laws: standard, enhanced

Typically, k-e except for the cases with swirl

-- separation

Not considered

-- complicated geometries:
   -- complicated physics

I would say so: multiple reactions and heat transfer mechanisms,
with the coal combustion simulation also particle tracking, pyrolysis, 
char burnout

   -- complicated grid
      -- 2D
      -- 3D

Can be pretty complex for the gas turbine simulations (done in 2D and 
3D)

   -- how complicated
      number of objects
      number of grid points
      examples

Can't give you exact numbers but I would say upto a 100K-200K cells. We 
were limited in our computer resources and people are now changing 
their grid from 2D to 3D.

-- geometry outline:
   -- gambit
   -- ProEngineer
   -- other
-- grids
   -- gambit
   -- ICEM
   -- other


Gambit for both

physics:
   -- multi-phase
      -- two-phase
             fluid-particle
             fluid-bubble
             lagrangian
             eulerian (multiple-fluid)
             VOF

That would be Lagrangian particle tracking

  -- heat transfer
     -- passive (shear driven)
     -- active (buoyancy induced)

Both

  -- combustion
     -- pre-mixed
     -- non-pre-mixed
     -- other

All combustion systems are studied

  -- other physics
     -- MHD
     --

Pollution modelling (NOx formation)
In the near future we will do simulations of fuel cells.
             
-- parallel
   experience: speed up?
               ease of use?

We have tried parallel simulations yet, interested in other people's 
experiences.

-- user subroutines
   experience
   examples of applications

Some of our PhD-students have experience with it.

-- specific geometries/flows/techniques
   -- ventilation
   -- cooling
   -- phase-transition
   -- LES
   -- flow around bluff bodies
   -- flow around streamlined bodies

-- typical examples of geometries

Gas turbines, small scale coal furnaces, nuclear reactor

-- typical geometries that you do NOT with Fluent
   -- there are much-easier other packages
   -- Fluent cannot do it at all

Full scale utility boiler

examples:
   -- turbine blades
   -- flow around bluff bodies
   -- flow around streamlined bodies
   -- flows with obstacles and particles
   -- flames