Documentation

Mass Flow Rate Source (TL)

Generate constant mass flow rate

Library

Thermal Liquid/Sources

Description

The Mass Flow Rate Source (TL) block represents an ideal compressor generating a constant mass flow rate through its inlets. The compressor can hold the specified mass flow rate regardless of the pressure differential between its inlets. 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 mass flow rate is positive when liquid flows from inlet A to inlet B.

Variables

Use the Variables tab in the block dialog box (or the Variables section in the block Property Inspector) to set the priority and initial target values for the block variables prior to simulation. For more information, see Set Priority and Initial Target for Block Variables.

Assumptions and Limitations

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

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

Parameters

Mass flow rate

Enter the rate at which mass flows through the compressor inlets. The default value is 0 kg/s.

Cross-sectional area at ports A and B

Enter the cross-sectional area of the adjoining pipes. The default value is 1e-2 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 1e-1 m.

Ports

This block has two thermal liquid conserving ports, A and B.

Introduced in R2013b

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