| Radiation is the dominant mode of heat transfer in many industrial
applications. Examples include combustion, rapid thermal processing (RTP)
and rapid thermal chemical vapor deposition (RTCVD). In some applications,
the gases within the system may be participating, while in others only the
solids may be participating.
The CFD-ACE+ radiation module provides models that have been
designed to address needs for specific application areas. The three models
available are:
- Discrete Ordinates Method: This can be used for any application. It
is particularly suited to applications such as combustion where the
gases are participating. The model can be used for both gray and non-gray
properties.
- Monte Carlo Method: This is a high-fidelity model tailored to address
issues in semiconductor material processing, such as spectrally and
directionally varying properties, thin film interference effects, and
partially-specular reflections. The model can be used with both gray
and non-gray radiative properties.
- Surface-to-Surface Method: This is a very efficient method suitable
for applications that do not involve participating gases and require
fast estimation of the radiative heat fluxes, such as in the underhood
of an automobile. This model is only gray.
All three models can be used with any grid topology. The Discrete Ordinates
and Monte Carlo models can be run on parallel processors. The CFD-ACE+
Heat Transfer/Radiation Module has been validated and successfully used
for numerous applications. Sample validation results and typical simulations
are shown to the right.
|
CFD-ACE+ Simulation of Thin-Film Effects in a Commercial RTCVD Reactor
using the Monte Carlo Model
CFD-ACE+ predictions of temperature in a combustor with and without
radiation and with gray and non-gray radiative properties
|
