COMSOL Multiphysics™

Overview
A COMSOL Multiphysics file is used to store COMSOL Multiphysics data. The
format is suitable for exchange of mesh or CAD data between COMSOL Multiphysics
and other software systems. It is possible to save a COMSOL Multiphysics file in a text
file format, using the extension .mphtxt, or a binary file format, using the extension
.mphbin. The file formats contain the same data in the same order.
File Structure
The COMSOL Multiphysics file format has a global version number, so that it is
possible to revise the whole structure. The first entry in each file is the file format,
indicated by two integers. The first integer is the major file version and the second is
referred to as the minor file version. For the current version, the first two entries in a
file is 0 1.
The following sections describe the file structure of the supported version.
FILE VERSION 0.1
After the file version, the file contains three groups of data:
• A number of tags stored as strings, which gives an identification for each record
stored in the file.
• A number of types, which are strings that can be used in serializing the object. The
tag should be used as an indication of the contents of the file, but can also be an
empty string.
• The records containing the serialized data in the file.
Example When using flsave from COMSOL Script to save a COMSOL
Multiphysics mesh, the tag equals the variable name (m1) in COMSOL script, the type
is set to obj (but this is not used), and the record contains the serialization of the mesh
object, including point coordinates and element data of the mesh. See “Examples” on
page 461 for more examples of COMSOL Multiphysics text files.
# Created by COMSOL Multiphysics Fri Aug 26 14:19:54 2005
# Major & minor version
0 1
######### Tags
1 # number of tags
426 | CHAPTER 3: THE COMSOL MULTIPHYSICS FILES