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Expand Up @@ -117,7 +117,7 @@ Additional `SCREEN_OUTPUT` for streamwise periodic flow is `STREAMWISE_MASSFLOW`

In this tutorial, 2 configuration files are provided which differ in the streamwise periodic options.

[First](https://github.com/su2code/Tutorials/tree/master/incompressible_flow/Inc_Streamwise_Periodic/sp_pinArray_dp_hf_tp.cfg), one of the simplest setups with a user provided pressure drop over the domain is chosen. Temperature periodicity is activated.
[First](https://github.com/su2code/Tutorials/tree/master/incompressible_flow/Inc_Streamwise_Periodic/sp_pinArray_2d_dp_hf_tp.cfg), one of the simplest setups with a user provided pressure drop over the domain is chosen. Temperature periodicity is activated.
```
% --------------------- STREAMWISE PERIODICITY DEFINITION ---------------------%
%
Expand All @@ -127,7 +127,7 @@ STREAMWISE_PERIODIC_PRESSURE_DROP= 208.023676
STREAMWISE_PERIODIC_TEMPERATURE= YES
%
```
For the [second configuration](https://github.com/su2code/Tutorials/tree/master/incompressible_flow/Inc_Streamwise_Periodic/sp_pinArray_mf_hf.cfg) a massflow is prescribed. The initial pressure drop matches the final value but changes within the first iterations until the flow converges. Streamwise periodic temperature is deactivated so the outlet heatsink is used. In this case the 3 heatflux markers form a full circle which makes an exact computation of the introduced heatflux possible which can be then specified using the `STREAMWISE_PERIODIC_OUTLET_HEAT`. Note that an exact computation of this value is not always possible and also not necessary as the area-averaged inlet temperature must match `INC_TEMPERATURE_INIT` upon convergence which serves as an anchor for the temperature.
For the [second configuration](https://github.com/su2code/Tutorials/tree/master/incompressible_flow/Inc_Streamwise_Periodic/sp_pinArray_2d_mf_hf.cfg) a massflow is prescribed. The initial pressure drop matches the final value but changes within the first iterations until the flow converges. Streamwise periodic temperature is deactivated so the outlet heatsink is used. In this case the 3 heatflux markers form a full circle which makes an exact computation of the introduced heatflux possible which can be then specified using the `STREAMWISE_PERIODIC_OUTLET_HEAT`. Note that an exact computation of this value is not always possible and also not necessary as the area-averaged inlet temperature must match `INC_TEMPERATURE_INIT` upon convergence which serves as an anchor for the temperature.
```
% --------------------- STREAMWISE PERIODICITY DEFINITION ---------------------%
%
Expand Down Expand Up @@ -204,4 +204,4 @@ The **extension to CHT** cases is straight forward as the options in the fluid z

**Temperature depended material properties** are only reasonable to be used with `STREAMWISE_PERIODIC_TEMPERATURE= NO` as the solution variable Temperature would be truly periodic and therefore non-physical. The recovered Temperature would need to be used instead which is not available in the code at the moment.

The **discrete adjoint** does not work with `KIND_STREAMWISE_PERIODIC= MASSFLOW` in the moment. All other features are working with the discrete adjoint solver.
The **discrete adjoint** does not work with `KIND_STREAMWISE_PERIODIC= MASSFLOW` in the moment. All other features are working with the discrete adjoint solver.