Thermal Simulation of Avionics Compartments



Thermal management is the main issue affecting the design and configuration of an avionics compartment. Avionics components must operate within the required temperature limits under all operating conditions -  typically in very confined spaces with little cooling airflow.



Exa has a comprehensive solution for avionics thermal management. PowerFLOW’s highly accurate transient simulation of the cooling flows within the avionics compartment is automatically coupled with PowerTHERM’s modules to predict heat conduction and radiation. The ability to quickly move around and reconfigure different components in PowerFLOW enables the optimization of the avionics compartment configuration to achieve maximum cooling efficiency. Components can be modeled in their full complexity or in a simplified way if geometric data are not yet available. Heat sources can be effectively modeled. And PowerFLOW’s unique rotating geometry capability allows the accurate modeling of fan performance and efficiency.


Benefits Exa’s solution for avionics cooling:


• Estimate thermal performance ranges for a wide range of airplane operating conditions


• Improve the design of avionics compartments for better efficiency


• Rapidly analyze various packaging concepts against thermal operating ranges and the tradeoffs with other requirements








Selected References

Aerospace Technical Papers Bibliography


Exa Product Overview


The Physics Behind PowerFLOW



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