DESCRIPTION

 

-1	Upper level menu
1	No previous solution
	By default, the iterative process starts from a solution field equal to zero, except for the temperature which can be initialised in the "average temperature" menu.
2	Start with an old result file
	Starts the iterative process from a previous solution read in an old result file. An interpolation mechanism is implemented, which initialises a field with values given for a possibly different interpolation (say from quadratic to 4x4 elements in temperature).
3	Start with an old result file and a restart file
	Not available if the task is steady-state. Starts the iterative process from a previous solution read in an old result file, together with S- (time-) derivative, according to the selected evolution (transient) scheme.
4	Start with an old CSV (Excel) file
	Starts the iterative process from a previous solution read in a CSV result file.  An interpolation mechanism is implemented, which initialises a field with values given for a different mesh.
5	Modify pathname of the old result file
	Allows the user to modify the name of the result file entered in options 2 or 3.
6	Modify pathname of the restart file
	Allows the user to modify the name of the restart file entered in option 3.
7	Modify pathname of the CSV file
	Allows the user to modify the name of the CSV file entered in option 4.
8	Modify numerical parameters for iterations
	Allows the user to set the max. number of iterations between two steps, the convergence and the divergence criteria
11	Modify the evolution (transient iterative) parameters
	Not available if the task is steady-state. Allows the user to select appropriate values for the various evolution (time) parameters : initial and final values, initial, minimum and maximum evolution (time) steps, numbers of successful steps, and continuation technique order.
10	Enable/Disable evolution on moving boundaries
	Activates an evolution scheme on free surface. This technique progressively relocates the nodes of the moving surface onto stream lines.  Not available with 'Surface Kinematic condition'.
12	Surface/Line kinematic condition
	The 'Line kinematic condition' method is a new method for calculating 3-D free surfaces and interfaces. The method is much more robust than the original technique (surface kinematic condition) for solving extrusion problems, especially when the extrudate cross-section involves several corners. This technique must be used in conjunction with a remeshing rule of the type 'Optimesh-3D'.
13	Coupled/Decoupled computation velocities/temperature
	In the coupled method, the solver calculates velocity and temperature fields within the same Newton-Raphson iterative scheme.  This is the default. In the decoupled method, the solver updates the temperature field after calculation of the velocities.
14	Coupled/Decoupled computation for moving boundaries
	In the coupled method, the solver calculates free surface(s) or interface(s) position and the velocity field within the same Newton-Raphson iterative scheme.  This is the default. In the decoupled method, the solver updates free surface(s) or interface(s) position after calculation of the velocities.  This always results in a slower convergence but sometimes in an increased robustness.

• solution techniques (UM)
• average temperature (RM)
• create a new task (RM)
• evolution (UM)
• Line Kinematic condition (UM)
• numerical parameters (UM)
• time-dependent flows / numerical parameters (UM)
• numerical parameters for iterations (RM)
• evolution parameters (RM)
• transient iterative parameters (RM)