Keyword type: model definition, material
With this option the specific gas constant of a material can be defined. The
specific gas constant is required for a calculation in which a gas dynamic
network is included. The specific gas constant ![]() is defined as
 is defined as 
| (419) | 
where 
![]() J
   J![]() kmol
kmol![]() K
K![]() is the universal gas constant 
and
 is the universal gas constant 
and ![]() is the molecular weight of the material. The specific gas constant is
temperature independent.
 is the molecular weight of the material. The specific gas constant is
temperature independent.
First line:
Following line:
Example: *SPECIFIC GAS CONSTANT 287.
defines a specific gas constant with a value of 287. This value is appropriate
for air if Joule is chosen for the unit of energy, kg as unit of mass and K as
unit of temperature, i.e. 
![]() J
   J![]() kg
kg![]() K
K![]() .
.
Example files: linearnet, branch1, branch2.