The Evaluate tab is used to evaluate an expression when all variables upon which the equation depends are specified. CFX-Pre automatically finds the variables associated with an expression, even if the expression depends on another expression.
For example, when previewing the expression halfRadius, defined as 0.5*radius, where radius is an expression that depends on the variables x and y, CFX-Pre presents x and y as the variables upon which halfRadius depends.
Under Expression Variables, enter values for all listed variables.
Click Evaluate Expression.
The resulting expression is evaluated using the given variable values.