Heat Pipe Placement in Aavid Genie
Aavid Genie gives you the option of adding heat pipes into the base of your heat sink. Genie takes your device layout into account when determining heat pipe placement within the base. This method is to approximate what Aavid Engineers would do anyways, which is focusing more of your heat spreading capabilities based off your heat sources.
For now, Aavid Genie will only put in straight pipes from one end of the base to the other, but please keep in mind that heat pipes are more flexible (literally) than what Genie depicts when it comes to bending and placement. If you want to simulate something similar to a vapor chamber, use more heat pipes to simulate planar spreading or simply use a uniform heat source.
Single Device and Single Heat Pipe
For single heat sources, heat pipe placement is simple. Genie will simply line up the centers of the device and the heat pipe in the direction you selected.
Multiple Devices with a Single Heat Pipe
For single heat pipes and multiple devices, Aavid Genie will place it in between the two sources. If you have multiple devices that do not line up on the same heat pipe and both require some level of heat spreading, you should really consider including multiple heat pipes in your base.
Multiple Heat Pipes
When you start adding both multiple devices and multiple heat sources, things get a little more complex. Aavid Genie will evenly distribute the number of heat pipes you’ve included in your design over the widest dimension you have heat loads.
Single Device and Multiple Heat Pipes
For a single heat source, Genie will try to group multiple heat pipes all under the heat source. Aavid Genie limits how close it places each heat pipe, so if there are more pipes than can be fit under the device, the heat pipes will be grouped together around the center of the heat source.
Multiple Devices with Multiple Heat Pipes
Aavid Genie will do the same thing for multiple devices and multiple heat sources. The width that Genie will spread the heat pipes across is defined by the farthest edges of all heat sources. So if there is a gap between your devices, that gap is considered part of the width the pipes will be spread across. While this may not always yield a layout an Aavid Design Engineer would select, it does give you a better idea of how heat pipes can improve base spreading for your heat sink.
If you’re concerned your gap is too big and you’re not getting heat pipes under your base, try increasing the number of heat pipes you include. The jump in cost between one or two heat pipes embedded in a heat sink base and a few more is typically offset by the added performance.
Heat Pipe Placement for Uniform Heat Sources
Adding a uniform heat source won’t affect your heat pipe layout. Since adding that load isn’t changing where your heat load is concentrated, altering the heat pipes won’t accomplish anything different. Generally speaking, uniform heat loads is what heat pipes are aiming to do anyways.
If you need more help with heat pipes or heat pipe placement, please contact Aavid Design Engineers. They’re experts in the field and can help with your application.