Create an Equation Goal

• On the ribbon, click Flow Simulation > Insert > Goals > Equation Goal.

• On the toolbars, click Equation Goal on the Flow Simulation Features toolbar.

• In the menu, select Tools > Flow Simulation > Insert > Equation Goal.

• In the Flow Simulation Analysis tree, right-click the Goals item and select Insert Equation Goal.

As variables, you can use specified goals, parameters of the specified project’s input data features and model equations or variables controlling the geometry:

• To add the specified goal as a variable:

  1. Click Add Goal  button.

  2. Then select the corresponding goal from the Add Goal list and click Add  button.

  Also you can add the desired goal by clicking it in the Flow Simulation Analysis tree.

  Tip

  To add an area or a volume of the model items (faces, components, etc.) as a variable, previously create a corresponding goal on the desired surfaces or components by using one of the following parameters: Area (Fluid), Area (Solid), Volume (Fluid), Volume (Solid) and then add the created goal as a variable.

• To add a parameter of the Input Data feature (boundary conditions, fans, initial conditions, etc.) or a parameter specified in General Settings, i.e., parameter of initial and ambient (for external analyses) or initial (for internal analyses) conditions:

  1. Click Add Simulation Parameter .

  2. Then select the corresponding parameter from the Add Parameter list and click Add  button.

     Also you can add the desired parameter by clicking the corresponding Input Data feature in the Flow Simulation Analysis tree, then select the desired parameter from the Add Parameter list and click Add  button.

• To add a model equation or variable controlling the geometry:

  1. Click Add Equation .

  2. Then select the variable from the Add Parameter list and click Add .

The selected variables appear in the Expression box defining the equation goal.

For transient analyses, you can add a physical time as a parameter to the equation by typing “t” or by clicking the t (physical time) button.

To delete the entire content of the Expression box, right-click the expression and select Clear.

Flow Simulation has no information about the physical meaning of the specified constant so you need to specify the displayed dimensionality by yourself.

If you clear this check box, the goal’s convergence is used for information only so the calculation may be stopped before the goal is converged. See “Finishing the Calculation” for details.