Yifeng Tang

MathWorks

Last seen: Today Active since 2020

Followers: 1   Following: 0

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

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The Excavator Hydraulic Jack Forces are Changing Direction in Simscape Multibody
The way the joints are actuated and the joint forces are sensed for inverse dynamic analysis looks OK. As a position signal is ...

ungefär 18 timmar ago | 0

Fluid inertia in Simscape hydraulic
Hi Amodio, I don't think the actuator blocks model the inertia of the fluid inside. The "cushion" can be used to model some en...

ungefär 22 timmar ago | 0

Center of mass of a free-floating body in Simscape Multibody is moving with no external forces
I believe there can be many solutions that would satisfy the initial conditions you have set. The only target set here is the s...

5 dagar ago | 0

| accepted

Flow rate discrepancy between upstream and downstream of orifice model.
A diffential pressure 2950 psi sounds big enough to change the density of the fluid. As the density changes, volumetric flow ra...

6 dagar ago | 0

Simscape Fluids model of closed system
Hi Jeremy, Looks to me like an initialization issue. I don't have R2020b on my computer so I tried this on R2021b, the oldest ...

6 dagar ago | 0

How to make a revolute joint turn in one direction in Simscape?
There may be better solutions, but just some ideas. If you have access to Simscape Driveline, there is a one-way clutch (Unid...

8 dagar ago | 0

Pressure drop of a two-phase fluid pipeline in simscape
You can view the Simscape code of the Pipe (2P) block, save a copy, and modify it to use a custom correlation if you like. Find...

11 dagar ago | 0

| accepted

Can "pipe(G)" block be used to model forced air convection?
I think it's possible. The combination of cross section and hydraulic diameter will give you a circumference; that multiplied b...

14 dagar ago | 0

HOW CAN I TURN AN EQUATION INTO COMPONENT IN A LIBRARY?
Hi Usha, In addition to Ayush's answer, I suggest that you look at the source code of a translational spring block. You custom...

14 dagar ago | 1

How does simscape caculate the hydraulic pressure?
The pump blocks in Simscape Fluids models the flow rate at different pressure difference and speed, but themselves are "volume-l...

14 dagar ago | 0

state flow入门之旅中的诸多疑问

20 dagar ago | 0

Use Simscape parameter as variable in Simulink model
If it's in the Simscape Results Explorer, you should be able to use a Probe block to make it available during simulation as a Si...

22 dagar ago | 0

Using the TL-2P heat exchanger in simscape to simulate an external threaded tube heat exchanger
The way you set up the heat exchanger looks promising to me. I would use the Parameter Estimator App (Documentation) to estimat...

22 dagar ago | 0

| accepted

why are the results different from moist air domain(MA) using only dry air and gas domain(G)? - simscape
Hello, Given the range of temperature you'd like to implement, I believe you are seeing the difference in the way the specific ...

ungefär en månad ago | 1

The sum of the 2 branches flow is different than pump flow
Hi Flavio, I looked at the model and below are my observations. the parameters and inputs for the pump look ridiculous: at 1m^...

ungefär en månad ago | 2

| accepted

Simscape 4-Way 3-Position Directional Valve (IL) No "Fluids/Plot Valve Characteristics" Option
See the comment section for the discussion. Issue resolved (by itself) as of now.

ungefär en månad ago | 0

Pipe (TL) fluid compressibility problem
See this related question for a more detailed discussion: https://www.mathworks.com/matlabcentral/answers/2111661-rservoir-tl

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Rservoir (TL)
Hi Karim, I did a few things that feel like best practices to me: (1) add a Tank (TL) block to where the reservoir was. Pleas...

| accepted

Heat Exchanger (TL-TL) breaking thermodynamics?!
This shouldn't happen for parallel-flow heat exchangers, because of 2nd law of thermo-dynamics. But this may happen for counter...

| accepted

hydraulic circle for fire suppression system clean agent
Hi Albara, It will be helpful if you could provide some schematic to show the interior of the agent tank so we can understand t...

Simscape Gas Inertia block
Hi Caleb, "Fluid inertia is negligible." is one of the model assumption of the Pipe (G) block. You may be able to modify the c...

Simscape fixed displacement pump pressure gain wrong?
Hi Sandro, one quick thing to fix: you need another reservoir at port B, otherwise the fluid has nowhere to go. The reservoir a...

Modeling a pressurized flexible body (balloon) in simscape multibody/fluids
Hi Siril, I feel the problem may be way more complicated than just "the two open red open wires". To model this pressurized fl...

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Isothermal Fluids Pump/Motor Case Drain
Hi Philip, I feel the way you model it is very reasonable. Adding an small orifice or check valve mimics what happens in real ...

Changing Thermal Liquid Properties in Simscape
If you'd like to manually set the properties like density, Cp, etc., the right block to use is "Thermal Liquid Settings (TL)" fr...

Failed to increase pressure of a system with an actuator. Whats wrong?
It looks like that you would like to move the piston & mass so the pressure in Chamber A of the actuator will increase and you a...

| accepted

Simscape piston moves without pressure difference
You don't need a force to keep a mass moving at constant velocity, as the acceleration is zero and F=m*a. When I add a damper...

| accepted

Simscape pipe cleaning model - cleaning used pipe's interior surface with different fluid
It's possible to model a "solution", i.e. thermal liquid + passive scalar(s), using a quick-and-dirty way or a more formal one. ...