*SPECIFIC GAS CONSTANT

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 $R$ is defined as

$$R=\mathcal{R}/M$$ (189)

where $\mathcal{R}= 8314 \;$   J$/($kmol$\;$K$)$ is the universal gas constant and $M$ is the molecular weight of the material. The specific gas constant is temperature independent.

First line:

• *SPECIFIC GAS CONSTANT

Following line:

• Specific gas constant.

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. $R = 287 \;$   J$/($kg$\;$K$)$.

Example files: linearnet, branch1, branch2.