Turbo vs. Open

turbo · March 23, 2016, 18:09

I have recently seen a new product, "Fine Open" in Numeca website. Can anyone clarify how different it is from "Fine Turbo"?

colinda1 · March 29, 2016, 03:35

FINE/Turbo is NUMECA's turbomachinery dedicated environment for structured mesh generation (AutoGrid5)and structured solver.

FINE/Open with OpenLabs is the environment based on the FINE/Open unstructured solver and includes an unstructured mesh generator. Even if FINE/Open with OpenLabs can be used for many types of applications, it is also used for turbomachinery applications where e.g. for the wheel a structured mesh is created in AutoGrid5 while the spiral casing is meshed in HEXPRESS (unstructured mesh). Putting the two meshes together, the computation is then performed in FINE/Open with OpenLabs.

Best regards,
Colinda

turbo · March 29, 2016, 08:48

Thanks for your kind explanation.
Another question is if the solver core logic will be identical between the two, resulting in the same solution. The only difference will be whether to allow unstructured mesh?

colinda1 · April 1, 2016, 07:58

--- due to the general treatment on unstructured grids, certain algorithms such as calculation of viscous stresses, or source terms in turbulence models, are programmed differently, even when applied on structured grids
--- on very fine grids the results will be very close
---- but on coarser grids, some differences might appear, depending on the complexity of the flow.

turbo · April 1, 2016, 09:44

Thanks. Good answer.

March 23, 2016, 18:09	Turbo vs. Open	#1
turbo Senior Member Join Date: Jun 2009 Posts: 174 Rep Power: 16	I have recently seen a new product, "Fine Open" in Numeca website. Can anyone clarify how different it is from "Fine Turbo"?

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March 29, 2016, 03:35		#2
colinda1 Senior Member Colinda Join Date: May 2012 Location: Brussels Posts: 151 Rep Power: 13	FINE/Turbo is NUMECA's turbomachinery dedicated environment for structured mesh generation (AutoGrid5)and structured solver. FINE/Open with OpenLabs is the environment based on the FINE/Open unstructured solver and includes an unstructured mesh generator. Even if FINE/Open with OpenLabs can be used for many types of applications, it is also used for turbomachinery applications where e.g. for the wheel a structured mesh is created in AutoGrid5 while the spiral casing is meshed in HEXPRESS (unstructured mesh). Putting the two meshes together, the computation is then performed in FINE/Open with OpenLabs. Best regards, Colinda

March 29, 2016, 08:48		#3
turbo Senior Member Join Date: Jun 2009 Posts: 174 Rep Power: 16	Thanks for your kind explanation. Another question is if the solver core logic will be identical between the two, resulting in the same solution. The only difference will be whether to allow unstructured mesh?

April 1, 2016, 07:58		#4
colinda1 Senior Member Colinda Join Date: May 2012 Location: Brussels Posts: 151 Rep Power: 13	--- due to the general treatment on unstructured grids, certain algorithms such as calculation of viscous stresses, or source terms in turbulence models, are programmed differently, even when applied on structured grids --- on very fine grids the results will be very close ---- but on coarser grids, some differences might appear, depending on the complexity of the flow.

April 1, 2016, 09:44		#5
turbo Senior Member Join Date: Jun 2009 Posts: 174 Rep Power: 16	Thanks. Good answer.