CFD Online Logo CFD Online URL
Home > Forums > STAR-CCM+

Cooling plates and Fan Curve

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree1Likes
  • 1 Post By triple_r

LinkBack Thread Tools Display Modes
Old   October 23, 2012, 13:13
Default Cooling plates and Fan Curve
New Member
Join Date: Oct 2012
Posts: 1
Rep Power: 0
akjay90 is on a distinguished road
I am relatively new to Star CCM+ and have a question regarding Cooling plates using a fan. The problem construction goes like this.There is a heat flux that is being given from the top side of the plate , while the air enters through annular regions from the left side of the plate due to a fan that is kept on the other side(suction pressure).

The issue here is that I do not have a Boundary condition at either ends of the plate and I only have the fan curves associated with the fan(not the tables, but the curves from the manufacturer's manual).

Can someone tell me how I can understand the Mass flow rate or the suction pressure from the fan curves(for one BC) and how to simulate ambient pressure and temperature at the other Boundary condition. I have also attached the fan curve with this file. It would be of great help. Thanks in advance.
Attached Images
File Type: jpg Fan curve.jpg (78.7 KB, 19 views)
akjay90 is offline   Reply With Quote

Old   October 25, 2012, 16:47
Senior Member
Join Date: Mar 2009
Location: Appleton, WI
Posts: 105
Rep Power: 8
triple_r is on a distinguished road
If you solve for the flow by specifying different suction pressures and then calculating the resulting CFM, or running with different CFMs and calculating the required suction pressure, you will get another curve called the system curve. For example, you perform three runs at 50, 100, and 150 CFM and calculate the pressure drops associated with them, let's say 0.3, 0.7, and 1.6 inches of water. You can plot these points on your fan curve and connect them using a smooth curve. Now that you have the system curve, find the intersection of system curve and pump curve. That is the system operating point, and it will tell you what is the operating flow rate or pressure drop through the system.

For the boundary conditions, you can either find appropriate heat transfer coefficients from literature, or (this is the better option imho) use a conjugate heat transfer simulation, and let the software calculate the heat transfer rates for you.
siara817 likes this.
triple_r is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 06:27.