Hello, thank you for your helpful video. I have a question, is that possible to insert only velocity inlet and leave the pressure at 0 Pa ? I only have a data of fan velocity of 7.5. I just want a static velocity of the fan (maybe some kind of blower with static velocity). Thank you for your reply.
If we know the thrust coefficient and fan speed(rpm), is there a way to use this information to simulate the fan effect downstream or the prop wash downstream?
As you show in your video the fan curve is not linear. It is a polynome with the order four or higher. A linear approximation will most likely produce wrong results unless you limit your flow to a small intervall of course.
Hello. I am trying to run a simulation similar to yours but whenever I run the case I just get 0 pressure and 0 velocity everywhere. My boundary conditions are an inlet velocity with 0 m/s and a outflow. Any idea of what could be causing this?
It has to be a surface if you want to use this option. Although, there is 3D fan that you can use the volume and it will provide you a better solution.
Thanks for sharing! I couldn't find a proper tutorial on how to set up internal fans on ANSYS Fluent. This was very helpful.
Hello, thank you for your helpful video. I have a question, is that possible to insert only velocity inlet and leave the pressure at 0 Pa ? I only have a data of fan velocity of 7.5. I just want a static velocity of the fan (maybe some kind of blower with static velocity). Thank you for your reply.
If we know the thrust coefficient and fan speed(rpm), is there a way to use this information to simulate the fan effect downstream or the prop wash downstream?
As you show in your video the fan curve is not linear. It is a polynome with the order four or higher. A linear approximation will most likely produce wrong results unless you limit your flow to a small intervall of course.
very useful!! thanks for sharing .
Thanks and I appreciate it if you can subscribe to my channel so I can make more of these videos.
@@pulsedflowsolutions9058 already subscribed, please more videos about internal fans and fluid simulations in electronics
Great video! What did you select as your inlet and outlet boundary conditions?
Thanks! In this case, the inlet/outlet BCs should be pressure so you should know the pressure values at least for one of them...
Hello. I am trying to run a simulation similar to yours but whenever I run the case I just get 0 pressure and 0 velocity everywhere. My boundary conditions are an inlet velocity with 0 m/s and a outflow. Any idea of what could be causing this?
Well, you are saying that your inlet velocity is zero so I assume velocity is zero everywhere including on the fan?
Does it work if you create a small circular volume for the fan, instead of a surface ?
It has to be a surface if you want to use this option. Although, there is 3D fan that you can use the volume and it will provide you a better solution.
What about the Flat Fan Simulation?
Thanks for the video. Can you make a similar video for 2D (how to set up a fan boundary condition in 2D)?
I haven't done it but probably, you need to make a line or an edge as fan and then use share topology for it.