Видео

Please check your mesh and boundary conditions carefully.

I'll provide a link to a directory where you can download the IGES file sample. This will be added to the updated description of this video shortly.

The velocity is defined as an analytical function (refer to the video at 3:01), and the outlet boundary condition is set to zero pressure.

Thanks for the suggestion! I’ll work on it and, once the model is ready, I'll create a video on it.

@@LearnwithSAI it would be really helpful if you can do it within a week,I'm actually searching for it and I need it badly for my project.,By the way thanks for the reply🙏🙏

Thank you for your kind words! To simulate a fan exhausting air from one room to another in COMSOL, you can follow these steps: Geometry Setup: Create the geometry for the two rooms and the connecting fan area. You can use simple 3D boxes for the rooms and a cylinder or opening for the fan. Physics Selection: Use the 'Laminar Flow' or 'Turbulent Flow' module, depending on the nature of the flow, to simulate air movement. Fan Definition: In COMSOL, you can use a 'Fan' boundary condition if you're modeling the fan explicitly, or you can define a velocity at the fan inlet/outlet. Alternatively, apply a pressure boundary condition at the outlet of the fan to simulate the pressure difference driving the flow. Inlet and Outlet: Set the inlet of the first room as an inflow boundary condition, where the air enters. At the outlet (the second room), set a pressure boundary condition or outflow condition at zero gauge pressure. Mesh Generation: Create an appropriate mesh for the geometry. Make sure to refine the mesh near the fan for better accuracy. Study and Solver: Choose a time-dependent study if the flow is transient, or a stationary study if it’s steady-state. Run the simulation to analyze the airflow patterns and exhaust performance. Let me know if you need more detailed guidance on any specific part of the process!

Hi, To simulate blood flow under a magnetic field, where the blood is modeled as a ferrofluid, you will need to couple fluid dynamics with magnetic field simulations. Suggested Modules: Magnetic Fields (mf): You are correct in assuming you can use the Magnetic Fields, No Currents interface if the current is not a factor in your system. This allows you to model the magnetic field acting on the ferrofluid (blood) in your simulation. Single-Phase Flow (spf): To model the flow of blood, you can use the Single-Phase Laminar Flow interface if the blood flow is slow and can be assumed to be laminar. If the flow is turbulent, you may need to switch to the Turbulent Flow module. Multiphysics Coupling: Use the Magnetic Forces multiphysics coupling to account for the interaction between the magnetic field and the ferrofluid. This will enable you to calculate the force exerted by the magnetic field on the ferrofluid (blood) and integrate that into the fluid flow equations. You may also need to define the magnetization properties of the ferrofluid based on how blood behaves under the influence of a magnetic field (e.g., defining magnetic susceptibility). Hope this will help.

@@LearnwithSAI hello. I modeled with mfnc and laminar flow module and I added kelvin force as a volume force where only kelvin force is added into momentum equation. (Lorentz force is negligible). The results look OK. Thanks!

Thank you for your question! I’ll be happy to explain the process of simulating fatigue life cycles in COMSOL and how you can visualize the number of cycles to failure soon.

@@LearnwithSAI yes sir please make it soon. I will be thankful to you

You're welcome.

Haha, love the Aperture Science™ reference! 😄 In this simulation, we’re firing the bullet, but the domain is tough enough to stop it without penetration. Maybe next time, we’ll have to fire 65% more bullet per bullet to break through! Thanks for watching.

To change the size of a 2D geometry in COMSOL, use the Scale feature under Geometry > Transforms to adjust the scaling factor for the entire geometry.

Directly resizing an imported geometry in COMSOL isn't as straightforward as resizing native geometries. However, you can resize an imported geometry by using the Scale feature as part of the Transform operations. Here’s how you can do it: Go to Geometry: Right-click on the Geometry node and select Transforms > Scale. Apply Scaling: In the settings for the scale operation, apply a scaling factor to resize the imported geometry. You can scale it uniformly or specify different factors for each axis (x, y, z). So while you can't manually modify dimensions like native geometries, the Scale operation allows you to resize imported geometries. Let me know if you need further help!

@@LearnwithSAI Thanks for this information.

Thank you for reaching out! While I’m happy to help guide you here with your particle tracing in laminar flow using COMSOL, I currently don’t offer direct contact outside this platform. However, feel free to describe your struggles, and I’ll do my best to assist you step-by-step. You can also share any specific issues you're facing, and I can provide detailed suggestions or solutions.

Yes, you can add an eigenfrequency study to the FSI in COMSOL model. Here's how you can integrate it: Add an Eigenfrequency Study: In the Model Builder, right-click the Study node and select Add Study > Eigenfrequency. This will allow you to calculate the natural frequencies and mode shapes of the structure, like the oscillating beam in this case. Multiphysics Coupling: Make sure the FSI is properly coupled with the Structural Mechanics and Fluid Flow modules. The eigenfrequency study will focus on the structure's response (oscillating beam) without fluid flow, or it can include fluid effects if needed. Boundary Conditions: Define the appropriate boundary conditions, such as fixing certain parts of the beam or specifying interaction forces between the beam and the fluid. Run the Eigenfrequency Study: After adding the study, run it to analyze the natural frequencies of the beam while interacting with the fluid.

You can check the steps from this tutorial "ruclips.net/video/klM30avz0eg/видео.html"

Thank you for the positive feedback! I'm glad the video was helpful. Regarding your question, the small circle in the middle typically represents a part of the geometry such as a hub or support structure that interacts with the fluid or affects the motion of the impeller. It's there to provide a more realistic simulation of the system. Yes, you can perform the simulation using only the big circle and the impeller, but the results might be slightly different as the smaller circle plays a role in how the flow interacts with the impeller. If you’re focusing on a simplified model or just the impeller’s behavior, you can try removing it and see how the results differ based on your simulation goals. Hope this helps, and feel free to ask if you have more questions!

Thank you for your question! While I currently provide guidance through comments and video explanations, I can definitely help you get started with modeling a membrane contactor for CO₂ separation. Feel free to describe your challenge in more detail here, and I'll do my best to assist you step-by-step. If you're interested in a specific aspect of the simulation, like setting up boundary conditions or choosing the right physics modules, let me know!

Thank you! I'm glad you enjoyed the video. To simulate the same model with natural gas, you’ll need to make a few adjustments: Material Properties: Update the material properties to represent natural gas instead of the default fluid. You can either select a pre-defined natural gas material from COMSOL's library or manually enter the properties (e.g., density, viscosity). Flow Conditions: If the flow conditions (like pressure or temperature) are different for natural gas compared to the original setup, make sure to modify them accordingly. Boundary Conditions: Check if any boundary conditions need to be adjusted based on the behavior of natural gas in your specific system. Feel free to ask if you need more detailed steps!

Thank you for your kind words! I'm glad you found the simulation helpful. While I’m happy to help you with guidance on stress and strain simulations for bones, I currently provide support through comments and video tutorials. Feel free to describe your simulation challenge here, and I’ll do my best to assist you step-by-step.

Hi, will upload soon.

Hi, You can explain on what you need on this email: learwithsai2377@gmail.com. I will check it at my earliest convenience.

@@LearnwithSAI Hi sir, thank you so much.. you will fined email with "COMSOL QUESTION" like object.. thaank you so much

@@LearnwithSAI Hi sir i can't find this mail adress, I think there's something wrong in it ! thank you

learnwithsai2377@gmail.com

@@LearnwithSAI I sent an email to this adress sir

You can go with either way, if you select model wizard then in the next step select 3D. OR if you go with blank wizard then you can select 3D from model component option.

Yes, please pause the video and insert those parameters in your model. Alternatively, I will share the file of parameters soon.

Can you tell the dimensional form equation of the following dimensionless equation 1.5*(1-(4*y^2))

You're welcome!