Introducing STAR-CCM+ > Setting up the Problem > Setting Types > Interface Types Reference > Baffle Interface
Baffle Interface
A baffle interface physically represents a thin sheet of impermeable, conducting material in a fluid. It can be placed between regions of the same continuum or of different continua.
Applications
- Impermeable, conducting baffles surrounded by flow
Modeling
- The baffle has infinitesimal thickness.
- The fluid adjacent to a baffle treats the baffle as a wall. It applies the non-slip boundary condition in viscous flow, and the component of the velocity normal to the baffle is zero.
- A thermal resistance per unit area,
, for conjugate heat transfer may be specified. The relation between the heat flux across the contact interface, 
, and the temperature difference, 
, is given by Eqn. 2. To calculate the thermal resistance of the baffle the following formula may be used:
|
(1) |
where 
and 
are the conductivity and thickness, respectively, of the 
layers comprising the baffle.
- If it is not required that heat transfer through the baffle be modeled, a baffle interface need not be created. The same functionality could be achieved by assigning wall boundary types (with adiabatic thermal conditions) to the boundaries in question.
Compatibility
User Interface
This interface type adds a baffle thermal option interface condition, and a porosity interface value to the tree.
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