Density

Figure 1.3: System Density: acausal bond graph

The acausal bond graph of system Density is displayed in Figure 1.3 (on page ) and its label file is listed in Section 1.1.4 (on page ).

This three port component computes the density $\rho$ of substance in terms of the temperature $T$ and the pressure $P$. At the moment, there are four forms dependent on the four forms of the component parameter:

1. density,incompressible,rho
2. specific_volume,incompressible,rho
3. density,ideal_gas,R
4. specific_volume,ideal_gas,R

$$y = \begin{cases}\rho & \text{if the parameter is \emph{density,i... ...} & \text{if the parameter is \emph{specific\_volume,ideal\_gas,R}} \end{cases}$$ (1.1)

where $\rho$ is the density of the incompressible fluid and $R$ the universal gas constant of the ideal gas.