SolverDiffeq

Class SolverDiffeq()

SolverDiffeq(parent='MODEL', name='SolverDiffeq_n', label='SolverDiffeq_n', 
active=True, static_hold=False, implicit=False, ic=0, ic_dot=0))

Creates a solver differential equation.

Keyword Arguments

Argument	Data Type	Description	Default
name	String	The variable name.	SolverDiffeq_n, for next available integer n.
label	String	The descriptive label.	SolverDiffeq_n, for next available integer n.
parent	Object	The parent.	MODEL
active	Boolean	Used to activate or deactivate this entity.	True
static_hold	Boolean	Set STATIC_HOLD if the state of the differential equation is not permitted to change during static and quasi:static analysis of the solver. Otherwise, leave blank by including two commas to hold the space.	False
implicit	Boolean	Specifies whether the differential equation is of type implicit or explicit.	False
ic	Double	The initial condition of the differential equation.	0
ic_dot	Double	The initial condition for the first derivative of the user defined variable. This is optional and is usually used in conjunction with an implicit variable.	0
user	Bool	Use user defined properties, if true.	False
usr_sub	Function	The expression passed to the user dll. When using solver expressions, Templex syntax (within ``) is used and all variables are enclosed in braces {} and the rest is treated as literal.	'USER()'
local_funcname	String	The function/subroutine name.	'MOTSUB'
use_local_dll	Bool	Uses a local function instead of default if True.	False
local_dll	File	The path of the local dll which has the local_funcname.	''
local_func_type	Enum	The type of the user subroutine. One of DLL, PYTHON or MATLAB.	'DLL'

Instances

value (Nonlinear) : The function expression which describes the differential equation.

Examples

Create a solverdiffeq and modify its property values.

   >>> from hw import mview
   >>> # Create a solver diffeq
   >>> sde = mview.SolverDiffeq()
   >>> sde.implicit
   False
   >>> sde.value.expr = '`DIF1(sde_equation.id) + 8.0 + COS(TIME)`'
   >>> sde.ic_dot = 2
   >>> sde.ic_dot
   2.0