Compartment Valve Model

6.13.2 Compartment Valve Model

A Compartments module option used to connect two boundaries with a dynamic 1-D analytical model of a Ball Valve or a Spool Valve. The 1-D valve model is activated under the Compartments module as follows:

Model Panel > Select Modules > Physical Model Selection dialog box (see, Figure 6.774).

After adding Ball Valve or Spool Valve from Available Modules list, view the available parameters as follows:

Model Tab > Ball Valve/Spool Valve > Properties Panel > Model Tab

Note: The Ball Valve or Spool Valve model under the Compartments module is an analytical 1-D model. For full three dimensional simulations of valves, Simerics-MP+ offer the Valve modules. Any number of Compartment module can be added, but they need to be given different module names.

Figure 6.774 - Adding compartment module

These operating parameters have two modes to specify the parameters/features. These two modes are available in the Setup Options

Setup Options

This provides the option to specify the operating parameters in either:

Normal Mode - Limits the options visible for a selected Compartments module with the intent of simplifying the set-up.
Advanced Mode - Reveals all options available for a selected Compartments module.

The Advanced Mode applies to the display of options, and can be switched back to Normal Mode without resetting any settings.

Figure 6.775 - Model and Setup options-Ball valve

ODE Integrator

This offers three options for the ordinary differential equation (ODE) solver. The three integrator options for the ODE solver are:

Stiff: A proprietary Simerics-MP+ explicit solver for ODE’s. It is the default for this module.
Euler: A first-order numerical procedure for solving ordinary differential equations (ODEs) with a given initial value.
Runge Kutta: An explicit method for numerical integration of ordinary differential equations.

Figure 6.776 - ODE integrator

Once the above parameters are specified, further parameters are described under: