Yifeng Tang

MathWorks

Last seen: Today | 自 2020 起处于活动状态

Programming Languages:
MATLAB
Spoken Languages:
Chinese
Pronouns:
He/him
Professional Interests:
Physical Modeling, Simscape Fluids, Simscape, Heat and Mass Transfer, Thermodynamics and Heat Transfer

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已回答
2P-2P Heat Exchanger
A few thoughts: (1) maybe use a system-level heat exchanger (2P-2P) as a starting point, so you have a model that you can simul...

3 days 前 | 0

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已回答
Simcape real gas properties for N and H2
Coolprop is free. They also have MATLAB wrapper.

10 days 前 | 0

已回答
Brazed plate heat exchanger on Simscape
I would recommend the following combination of options: The key is to choose "generic" for tube section, so you can set th...

11 days 前 | 0

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已回答
two-phase flow 4-way valve
You may follow this example on how to make a N-way valve manually. https://www.mathworks.com/help/simscape/ug/hydraulic-actuato...

11 days 前 | 0

已回答
Simscape how to set up a multi-process evaporator or condenser
The architecture looks right: refrigerant in series and air flow in parallel, like the actual heat exchanger. A few things to p...

14 days 前 | 0

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已回答
How to model tanks with inlets above liquid level - partially filled pipes missunderstood?
You can find here two examples on how to use a tank block and a partially filled pipe together in an isothermal liquid model. T...

28 days 前 | 0

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Binary Mixtures using coolprop in Matlab
Looks like you can use the MATLAB wrapper for Coolprop to define a mixture and query the properties, like below: py.CoolProp.Co...

2 months 前 | 0

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How to plot pump and system curve based on the hydraulic model in Simscape / Simulink?
To summarize the discussion from the comments section: The pump curves can be generated from the pump blocks in Simscape Fluids...

2 months 前 | 0

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Connection between corrected mass flow and pressure ratio in the Turbine (G) Block
Summary from the discussion in the Comments section. While the formulation isn't given in the Documentation page of the Turbine...

2 months 前 | 0

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Definition of Reynolds number for MA side in Heat Exchanger (2P-MA) model
I checked the source code: for generic geometry, the hydraulic diameter is calculated as 4 * generic_fluid_volume / generic_he...

2 months 前 | 0

已回答
Heat Pump Air Conditioner
Hello, I would suggest that you take a close look at this Documentation page "Model a Refrigeration Cycle" https://www.mathwor...

2 months 前 | 0

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Two-phase exchanger with evaporator that loses pressure at the outlet.
Check out this documentation page and carefully follow the workflow. https://www.mathworks.com/help/hydro/ug/modeling-a-refrige...

2 months 前 | 0

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Implementation of two-phase liquid out of REFPROP into simscape
In the same Documentation page, there is an example of using the same command to assign the properties to a Two-Phase Fluid Prop...

2 months 前 | 0

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已回答
How can I solve the error generated by a T-Junction when there is a Parallel Channels block in my simscape fluid model?
Hi Miguel, In the model you shared, the T-junction has the default initial flow target of 0 at all ports and "high" priority. ...

3 months 前 | 1

已回答
Data center Simscape modelling
There is a shipping example on data center cooling, in R2023a. https://www.mathworks.com/help/hydro/ug/data-center-cooling.html...

3 months 前 | 0

已回答
Fin Surface Area Condenser-Evaporator (2P-MA) Simscape Fluids
In the parameter dialog, the fin area for the MA side are for those thin foil/sheet you see on the outside of the tubes. The wa...

3 months 前 | 1

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已回答
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...

3 months 前 | 0

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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...

3 months 前 | 0

已回答
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...

4 months 前 | 1

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已回答
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...

4 months 前 | 0

已回答
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...

4 months 前 | 0

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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...

4 months 前 | 0

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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...

5 months 前 | 1

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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 ...

5 months 前 | 0

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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...

5 months 前 | 0

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已回答
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...

5 months 前 | 0

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已回答
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 ...

5 months 前 | 0

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已回答
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...

5 months 前 | 0

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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...

5 months 前 | 0

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已回答
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 ...

6 months 前 | 0

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