Documentation

Controlled Pressure Source (TL)

Generate time-varying pressure differential

Library

Thermal Liquid/Sources

Description

The Controlled Pressure Source (TL) block represents an ideal compressor generating a variable pressure differential across its inlets. The compressor can hold the specified pressure differential regardless of its mass flow rate. No heat exchange occurs between the compressor and the flowing liquid.

Ports A and B represent the compressor inlets. Both ports are thermal liquid conserving ports. The pressure differential is positive when the pressure at inlet B is greater than the pressure at inlet A. The block provides physical signal port P so that you can specify the pressure differential across the compressor inlets.

Assumptions and Limitations

  • No heat exchange occurs between the compressor and the flowing liquid.

  • The pressure differential between the compressor inlets is independent of the mass flow rate through those inlets.

Dialog Box and Parameters

Cross-sectional area at ports A and B

Enter the cross-sectional area of the adjoining pipes. The default value is 0.01 m^2.

Characteristic longitudinal length

Enter the mean path length the liquid must flow through to go from inlet A to inlet B. The default value is 0.1 m.

Ports

The block has the following ports.

AThermal liquid conserving port associated with compressor inlet A
BThermal liquid conserving port associated with compressor inlet B
PPhysical signal port providing the pressure differential between inlets A and B

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