Answered
Cooling system whit Ammonia not run
Hi Francesco, We believe the error has to do with the fact that NH3 has a non-monotonic supercritical line. It needs to be fix...

12 months ago | 0

Answered
Error using System-Level Refrigeration Cycle (2P)
Hi Carlo, We believe the error has to do with the fact that NH3 has a non-monotonic supercritical line. It needs to be fixed i...

12 months ago | 0

Answered
Simscape two-phase fluid in closed accumulator looses pressure
Hi Patrick, I believe what you are seeing is the result of the "upwind energy scheme" implemented at all ports of thermo-fluids...

1 year ago | 1

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Answered
how mixing pressure Pm is calculated in gas ejector model of Matlab
This pm term is EVERYWHERE in the governing equations of the ejector. It's solved for implicitly to keep the system of equation...

1 year ago | 1

Answered
How to model actuator ports in Simscape fluids?
I'd encourage you to think more about the "effect" of a port in the actual system, instead of just having the actually values of...

1 year ago | 0

Answered
issues on Heat exchanger in simscape TL-MA
Setting reasonable parameters to discribe the nominal conditions for the heat exchanger seem to resolve the issue. Pay particul...

1 year ago | 0

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Answered
In a Simscape Fluids/Hydraulic/IL centrifugal pump model, why is the flow higher after narrow pipe than directly after the pump?
In the Isothermal Liquid domain, the density of the fluid is a function of the pressure. See this documentation page: https://w...

1 year ago | 2

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Answered
How can I mode the refrigeration cycle considering frosting in the evaporator in simscape
Hi Shuping, You are correct about the condensed water being removed right away (like magic) from the MA domain. Therefore, no ...

1 year ago | 0

Answered
Modelling a layer of water crossed by a water circulation.
Hi Lucas, Check out the attached modified .ssc file and a simple test harness. I keep most of the equations from constant volu...

1 year ago | 0

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Answered
problem with ssc_build to generate custom simscape library
The input to the ssc_build command should be the directory name, instead of the .ssc file name. The directory can contain multi...

1 year ago | 0

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Answered
Two-Phase Cascade Heat Exchanger
Suggestion: check the parameters you've set for the heat exchanger, source, and reservoir blocks. Pay special attention to the ...

1 year ago | 0

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Answered
Modelling a layer of water crossed by a water circulation.
For the thermal liquid and almost all other fluids domains, you'll see a "port_convection" connection in the component block. C...

1 year ago | 0

Answered
variation of liquid and gas over time and the pressure variation inside a tank
The two absoluate reference block I believe will enforce the temperature and pressure to be 0K and 0Pa, respectively. Use Cap i...

1 year ago | 0

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Answered
Increase power compressor 2 phases simscape
Scale up the mass flow lookup table inside the compressor map block. You will then get more flow for the same RPM and pressure ...

1 year ago | 0

Answered
Can T-Junction (IL) be used to merge 2 pipe flows?
Yes, sure, although it's not necessary if you just want to merge two flows. You may just connect both B ports to the next compo...

1 year ago | 0

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Answered
Calculating Work done by a Closed Cylinder in Simulink and Simscape
You mentioned that you are using Simscape for the simulation of the cylinder. If that is indeed the case, I believe it would be...

1 year ago | 0

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Answered
What causes the pressure to be different in the shown figure when I use flow divider which must be dividing the flow equally?
The pressure sensor is an across variable sensor and no flow will go through the block. So your motor isn't getting any fluid t...

1 year ago | 0

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Answered
Which blocks could I use to model a hydraulic turbine in Simscape?
Some ideas: This hydraulic motor may be useful, though I suspect the shape of its performance curve may not be like that of a t...

1 year ago | 0

Answered
TL pressure Keep descending until the error is reported below the minimum effective value in matlab "official example of heat pump"
It's a model problem, in my opinion, meaning some important feature is missing from the model. In this case, some type of tank ...

1 year ago | 0

Answered
Does simscape two-phase element "2P pipe" allows constant temperature , constant pressure and constant mass flow rate as inputs?
The source block is only responsible of driving a flow. The states, temperature and/or pressure, are set mainly by the conditio...

1 year ago | 0

Answered
Pump system Thermal Liquid Modeling for Liquid Cooling
I noticed that the sensors in the model appear to be placed incorrectly. For through variable (flowrate, current, heat flux) ...

1 year ago | 0

Answered
Hydraulic Actuators in Series
There is a setting in the converter block about whether pressure in the volume causes the R port to move in positive or negative...

1 year ago | 0

Answered
Blower modeling in Simscape
In both the Gas and Moist Air domains, there is a Fan block you may try to use to model a blower. If Gas domain is sufficient f...

1 year ago | 0

Answered
Create a blockage in a pipe and simulate in Simulink
HI Adeyemi, The easiest thing to do is to use a Variable Local Restriction and closes it when you want the blockage to occur. ...

1 year ago | 0

Answered
positive displacement compressor (G) for simulating roots blower
Looks like this positive displacement compressor would be the right choice. A roots-type blower indeed works by trapping a fixe...

1 year ago | 0

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Answered
SimScape Tank (G-TL) - Liquid below inlet height error
This error is saying your liquid level is too low. Since it happened after the simulation has run for 22 secs, either too much ...

1 year ago | 0

Answered
Variable 3-way Proportional Control Valve flow rate and pressure drop
I would recommend using the parameter estimation workflow. You'll like need the Optimization Toolbox and the Simulink Design Op...

1 year ago | 0

Answered
How to use Temperature control valve (TL) in Simscape properly?
I saw mass flow rate sources in your model right before the control valve. The source will force the prescribed amount of flow ...

1 year ago | 0

Answered
how can i install seawater properties inside two phase-fluid properties ? simscape
If you have access to Simscape Fluids, an add-on library for Simscape, there is a Thermal Liquid Properties (TL) block, where se...

1 year ago | 0

Answered
Using a centrifugal pump in a two-phase (2P) fluid in Simscape
It's possible to build a model for CP to reproduce much of its behavior. If you can build a 2D table from reference data for th...

1 year ago | 0

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