ord_convection
define approximation order of the transport operators
define the approximation order in order to model the local transport operator
\begin{align} \mathbf{v}^T_{EULER} \nabla\end{align}
where \( \mathbf{v}^T_{EULER}\) is the transport velocity, to be found in
%ind_v_Euler(1)% etc.
ord_convection = 2
# use only up to linear ansatz functions for the EULER-transport operator
default: ord_convection = 3 -> use up to quadratic ansatz functions for modelling the local transport .
For the transport operators, see also current settings by the
DEBUG_GeneralParameter(60) = 30
# version 2 of d/dm
DEBUG_GeneralParameter(59) = -0.1
# usage of delta function and minimum shift distance
DEBUG_GeneralParameter(52) = 10
# refine transport at slip walls for the velocity boundary conditions
# HINT:
ord_convection = 4
# would invoke order 3. In addition to the quadratic ansatz functions, also some exponential ansatz functions in the sense exp( 2*(x-x_0) ) .
or