Liquid Properties Sensor (IL)

R2026b

Measure density, bulk modulus, fraction of entrained air, dynamic viscosity, and kinematic viscosity in isothermal liquid network

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Liquid Properties Sensor (IL) block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simscape / Foundation Library / Isothermal Liquid / Sensors

Description

The Liquid Properties Sensor (IL) block represents an ideal sensor that lets you measure the mixture density, bulk modulus, fraction of entrained air, dynamic viscosity, and kinematic viscosity in an isothermal liquid network. There is no mass flow through the sensor.

The block measures these properties at the node connected to port A.

Ports

Output

ρ — Density measurement, kg/m^3

physical signal

Physical signal output port that measures the density of isothermal liquid mixture.

Dependencies

To enable this port, select the Density check box.

Programmatic Use

Port: rho

β — Isothermal bulk modulus measurement, Pa

physical signal

Physical signal output port that measures the bulk modulus of isothermal liquid mixture.

Dependencies

To enable this port, select the Isothermal bulk modulus check box.

Programmatic Use

Port: beta

θ — Fraction of entrained air measurement, unitless

physical signal

Physical signal output port that measures the fraction of entrained (undissolved) air, (entrained air)/(entrained air + dissolved air). Value of 1 means no air is dissolved. Value of 0 means all air is dissolved.

Dependencies

To enable this port, select the Fraction of air that is entrained check box.

Programmatic Use

Port: theta

μ — Dynamic viscosity measurement, Pa*s

physical signal

Physical signal output port that measures the dynamic viscosity of isothermal liquid mixture.

Dependencies

To enable this port, select the Dynamic viscosity check box.

Programmatic Use

Port: mu

ν — Kinematic viscosity measurement, m^2/s

physical signal

Physical signal output port that measures the kinematic viscosity of isothermal liquid mixture.

Dependencies

To enable this port, select the Kinematic viscosity check box.

Programmatic Use

Port: nu

Conserving

A — Sensor inlet

isothermal liquid

Isothermal liquid conserving port. Connect this port to the node in the isothermal liquid network where you want to measure the liquid properties. All measurements are taken with respect to absolute zero.

Programmatic Use

Port: A

Parameters

Density — Control output port visibility to measure density

On (default) | Off

Select this check box to expose output port ρ, which measures the fluid density.

Programmatic Use

Parameter:	density_measure
Values:	"true" | "false"

Isothermal bulk modulus — Control output port visibility to measure bulk modulus

Off (default) | On

Select this check box to expose output port β, which measures the bulk modulus.

Programmatic Use

Parameter:	bulk_modulus_measure
Values:	"true" | "false"

Fraction of air that is entrained — Control output port visibility to measure fraction of air that is entrained

Off (default) | On

Select this check box to expose output port θ, which measures the fraction of undissolved air.

Programmatic Use

Parameter:	entrained_air_measure
Values:	"true" | "false"

Dynamic viscosity — Control output port visibility to measure dynamic viscosity

Off (default) | On

Select this check box to expose output port μ, which measures the dynamic viscosity.

Programmatic Use

Parameter:	dynamic_viscosity_measure
Values:	"true" | "false"

Kinematic viscosity — Control output port visibility to measure kinematic viscosity

Off (default) | On

Select this check box to expose output port ν, which measures the kinematic viscosity.

Programmatic Use

Parameter:	kinematic_viscosity_measure
Values:	"true" | "false"

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"fl_lib/Isothermal Liquid/Sensors/Liquid Properties Sensor (IL)"

Example: add_block("fl_lib/Isothermal Liquid/Sensors/Liquid Properties Sensor (IL)","myModel/myBlock",MakeNameUnique="on")

For information about programmatic access to individual block parameters, see the Programmatic Use section of parameter descriptions on this page.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2020a

R2026a: Measure dynamic and kinematic viscosity

The block has additional ports and parameters that provide the ability to measure dynamic and kinematic viscosity of the liquid.