Learning Forum

[Semin Park]

Hello, I’m writing this email to you to inquire about something that I’ve found during Discovery Simulations.

Please refer to ‘Getting Started - Thermal’ -‘2021 R1 | Thermal Simulation - Part 2’ - 05:00 in ANSYS Discovery Forum video link attached above.

On the contrary to what I saw in this video, when I lowered the height of the Heatsink as much as 10mm, the temperature coming out of the monitor went down.

Normally, as also shown in this video, if the height of the Heatsink decreases, the temperature increases but in my simulation, it turned out opposite direction.

Temperature variation might occur depending on the performance of PC, but the tendency of the results coming out in contraries appears to be a matter of importance.

Could you check the file, report, and the video recording of my simulation and advise your comments?

 

Thank you.

 

PC information

1. CPU : Intel® i7-6700k

2. RAM : 32GB (8GB x 4EA / DDR4 - 2133MHz)

3. GPU : NVIDIA GeForce GTX980 Ti (NVIDIA Driver Version : 526.98)

- GPU Memory : 22GB

(Dedicated GPU memory : 6GB / Shared GPU memory : 16GB)

4. Discovery Version : 22R2, 23R1

🛈 This post originally contained file attachments which have been removed in compliance with the updated Ansys Learning Forum Terms & Conditions

[Atharv Joshi]

Hi Semin Park ,

Let me check and get back to you.

[Atharv Joshi]

Hi Semin Park ,

If we reduce the height of the fins, the temperature goes up which is expected result. The temperature only goes down if the fidelity is low and it doesn't capture the fins properly. 

Generally, 3 elements in thin regions tend to capture the details and provide reliable results. Element size will depend upon the available GPU memory. 

You can refer to this article on capturing thin features Discovery Live: “Thin” geometric features and relative GPU adjustments – Ansys Knowledge

Please try to simulate with higher fidelity and the temperature trends are as expected. Let me know if you have further questions.

Thanks and Regards

🛈 This post originally contained file attachments which have been removed in compliance with the updated Ansys Learning Forum Terms & Conditions