[abhinavkrish]

Hi guys,
I am new to this forum and also to fluent.
I am currently working on aerospike nozzle flow analysis.
When i go for iterations, the software is displaying the error: Unknown two-sided zone type
I have double checked my boundary conditions and yet the problem persists.
The design Mach number is 3 and area ratio considered is 5.016
The meshing type quad through out, and my project is on analysis of exhaust- plume interaction of the nozzle.

Any help will be appreciated, since i am unable to find any solution to this problem.
I have done according to the parameters prescribed for this nozzle.
And the BCs has been double-checked and Re-checked...

Any info as to what this error means and other possible errors pertaining to the boundary conditions, is also welcomed.