Open Boundary
At the open boundary both inflow and outflow conditions are supported. For an outgoing fluid flow across the boundary, it applies a zero conductive flux condition:
(3-1)
For an incoming flow of velocity field u across the boundary, it accounts by default for the heat flux induced by the flow rate through a Danckwerts condition on the enthalpy:
(3-2)
where
Δ
H
is the sensible enthalpy. See
Theory for the Open Boundary Condition
for more details on the Danckwerts condition and the definition of
Δ
H
.
Upstream Properties
The conditions is based on the knowledge of the upstream temperature at the outer boundary of the virtual domain. Enter the Upstream temperature
T
ustr
outside the open boundary.
