'\" t
.\"     Title: freefoam-pdr
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 05/14/2012
.\"    Manual: FreeFOAM Manual
.\"    Source: FreeFOAM 0.1.0
.\"  Language: English
.\"
.TH "FREEFOAM\-PDR" "1" "05/14/2012" "FreeFOAM 0\&.1\&.0" "FreeFOAM Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
freefoam-PDR \- Solver for compressible premixed/partially\-premixed combustion with turbulence modelling\&.
.SH "SYNOPSIS"
.sp
\fBfreefoam PDR\fR [\-parallel] [\-srcDoc] [\-case \fI<dir>\fR] [\-doc] [\-help]
.SH "DESCRIPTION"
.sp
Combusting RANS code using the b\-Xi two\-equation model\&. Xi may be obtained by either the solution of the Xi transport equation or from an algebraic exression\&. Both approaches are based on Gulder\(cqs flame speed correlation which has been shown to be appropriate by comparison with the results from the spectral model\&.
.sp
Strain effects are incorporated directly into the Xi equation but not in the algebraic approximation\&. Further work need to be done on this issue, particularly regarding the enhanced removal rate caused by flame compression\&. Analysis using results of the spectral model will be required\&.
.sp
For cases involving very lean Propane flames or other flames which are very strain\-sensitive, a transport equation for the laminar flame speed is present\&. This equation is derived using heuristic arguments involving the strain time scale and the strain\-rate at extinction\&. the transport velocity is the same as that for the Xi equation\&.
.sp
For large flames e\&.g\&. explosions additional modelling for the flame wrinkling due to surface instabilities may be applied\&.
.sp
PDR (porosity/distributed resistance) modelling is included to handle regions containing blockages which cannot be resolved by the mesh\&.
.SH "OPTIONS"
.PP
\fB\-case\fR \fI<dir>\fR
.RS 4
Specify the case directory
.RE
.PP
\fB\-parallel\fR
.RS 4
Run the case in parallel
.RE
.PP
\fB\-help\fR
.RS 4
Display short usage message
.RE
.PP
\fB\-doc\fR
.RS 4
Display Doxygen documentation page
.RE
.PP
\fB\-srcDoc\fR
.RS 4
Display source code
.RE
.SH "SEE ALSO"
.sp
An overview of FreeFOAM is given in \fBfreefoam\fR(1)\&.
.SH "AUTHOR"
.sp
OpenCFD Ltd\&.
.SH "FREEFOAM"
.sp
Part of the \fBfreefoam\fR(1) suite\&.
.SH "COPYRIGHT"
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Copyright \(co 2008\-2012 Michael Wild\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Copyright \(co 1991\-2010 OpenCFD Ltd\&.
.RE