[mariconeagles96]

Hi guys! Hope you could give me some help on this.

My simulation involves cooling an object which is directly near the fan. The geometry have bad airflow patterns wherein there is recirculation on the fan. I have two openings and specify it as "openings" for im not sure where the air will go in or out of my system enclosure. Fan is running at 18000 rpm and when using an axial fan, air direction should be from fan to heating element. If i use the blower fan (9000 rpm), air direction is from heating element to blower fan. Since i have recirculation my heating element (copper at 70w) temperature is just increasing and increasing. Althought my flow is converge, temperature is still computing. I already checked the heat transfer option on fluid-solid interface, have material conductivity but i was expecting that temperature will eventually steady out just like with our experimental test. Im using sst, fluid models are fun runner (rotating domain) and mainfluid (stationary) solid models are heating element and the enclosure. What seems to be the error in my modelling? Hope you could share some thoughts. Thanks!