Hi
An advice if you turn off the "repeat message" the threads are easier to understand, in my view ;)
I had a quick look at your model:
1) you have no velocity at inlet (probably selected/changed the wrong inlet type) or this could be a translation issue because I'm using latest patch of 4.1 today, I must Select Normal inflow to get a reasonable inlet velocity
2) You define a variable "t", but that one is already reserved and defined by COMSOL from the moment you call a transient solver.
You can at most define a Parameter t=0[s] to help debug a multi solver case when the time dependent one only comes in 2nd or later position, anyhow by default at start t=0 when you call a transient solver.
3) I'm not sure the settings of the solid initial conditions in the turbulent section are OK, I would have cleared them, but it could be that COMSOL does it internally, not sure as there is no turbulence in the "solid" ;)
The set up of the complex muti-segregated solver nodes was an issue in the early v4.0, fixed in v4. anyhow CFD is/was also announced not really ready before 4.2, but I find quite OK in 4.1, was poor in v4.0. So you might need to study it in details and update, change it by hand.
Then you have a stationary solver and two time series ? For me you should start to delete all that and restart from a fresh default solver sequence, I get a simple time dviscrete solver case proposed as default in my version
--
Good luck
Ivar
An advice if you turn off the "repeat message" the threads are easier to understand, in my view ;)
I had a quick look at your model:
1) you have no velocity at inlet (probably selected/changed the wrong inlet type) or this could be a translation issue because I'm using latest patch of 4.1 today, I must Select Normal inflow to get a reasonable inlet velocity
2) You define a variable "t", but that one is already reserved and defined by COMSOL from the moment you call a transient solver.
You can at most define a Parameter t=0[s] to help debug a multi solver case when the time dependent one only comes in 2nd or later position, anyhow by default at start t=0 when you call a transient solver.
3) I'm not sure the settings of the solid initial conditions in the turbulent section are OK, I would have cleared them, but it could be that COMSOL does it internally, not sure as there is no turbulence in the "solid" ;)
The set up of the complex muti-segregated solver nodes was an issue in the early v4.0, fixed in v4. anyhow CFD is/was also announced not really ready before 4.2, but I find quite OK in 4.1, was poor in v4.0. So you might need to study it in details and update, change it by hand.
Then you have a stationary solver and two time series ? For me you should start to delete all that and restart from a fresh default solver sequence, I get a simple time dviscrete solver case proposed as default in my version
--
Good luck
Ivar