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Hewlett-Packard Keeps Processors Cool with FloTHERM

Hewlett-Packard uses FloTHERM CFD software to solve the serious thermal management challenges posed by their new blade servers.

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We use FloTHERM as our CFD analysis tool because FloTHERM is well-structured and easy to use compared to other CFD tools, and Mentor Graphics’ Mechanical Analysis Division provides the best technical support.”

Shailesh Joshi, Thermal Analyst, Hewlett-Packard Company

High power components pose challenge

The high power density of Hewlett-Packard’s blade servers posed serious thermal management challenges, particularly dissipating heat from the high power components such as the CPU.

To compound the problem, some architectures require that the CPUs be placed back-to-back so that the front processor preheats the air before it reaches the back processor. This makes it very difficult to cool the back processor.

CFD analysis optimizes heatsinks

FloTHERM software was used throughout the design process for HP’s new blade server, from proof-of-concept to prototype.

The FloTHERM CFD analysis involved designing and optimizing the heatsinks as well as visualizing the flow past the inclined baffle that connects the two heatsinks.

FloTHERM’s “sloping block” smart feature was used to represent the inclined baffle and the parametric optimization tool was used to design and optimize the heatsink.

Design time and costs are reduced

The FloTHERM analysis helped substantially reduce design time and provided significant cost savings. In addition, the FloTHERM analysis helped meet the weight targets of the heatsinks.

The [Mentor Graphics Mechanical Analysis Division] support team is very knowledgeable and responses are always well coordinated.”

Shailesh Joshi, Thermal Analyst, Hewlett-Packard Company

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