The turbulent flow will be computed if turbulence model is activated at least in one region
and either **Convection** or **Turbulent Convection** is selected
to be currently computed in *CrysMAS*.

The computation of the turbulent flow requires any start solution. The temperature distribution without account of the turbulent convection should be calculated. This start solution should not necessarily fully converge.

A short run with the laminar gas flow should be done before the turbulence modeling begins. At the beginning of the laminar fluid flow calculation the edge values of the temperature in the gas region will be allocated. These values are used also in the turbulent gas flow.

Select the argon region in the drawing.

Select

**Settings**>**Physical Phenomena**.The

**Physical Phenomena**dialog opens and indicates**1 region(s) selected**.Set

**Turbulent Convection**to**Yes**by clicking on the associated box, if it is not preselected.Click on

**Apply**and**Close**.Select

**Turbulent Convection**from the variable group list box in the tool bar.The default variable for visualizing results is

**turbulent_energy**.Select

**Computation**>**Start Computation**.or

Click on the

**Start computation**button in the tool bar.You can follow the solving process in the status bar. When computing is finished, you can visualize the results.

If the solving takes longer than you expected, you can stop the computation by clicking on the

**Stop computation**button .

The variables of the turbulent flow can be shown by selecting them, as usual, from
**Turbulent Convection** group. They are shown by isolines and/or by the colored
filled polygons.

All variables which are distributed over the triangle by quadratic shape functions are visualized using additionally the variables allocated in the middles of the edges. In this case each triangle is subdivided into 4 sub-triangles virtually. The field distribution is assumed to be linear within each sub-triangle created by the middle points of the edges and the triangle corners