Research on Intelligent Distribution of Liquid Flow Rate in Embedded Channels for Cooling 3D Multi-Core Chips

A numerical simulation model of embedded liquid microchannels for cooling 3D multi-core chips is established. For the thermal management problem when the operating power of a chip changes dynamically, an intelligent method combining BP neural network and genetic algorithm is used for distribution op...

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Bibliographic Details
Published in:Micromachines (Basel) 2022-06, Vol.13 (6), p.918
Main Authors: Zhang, Jian, Xie, Zhihui, Lu, Zhuoqun, Li, Penglei, Xi, Kun
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Artificial intelligence
artificial neural network
Back propagation networks
Boundary conditions
Convective heat transfer
Cooling
dynamic thermal management
embedded cooling
Energy conservation
Flow distribution
Flow mapping
genetic algorithm
Genetic algorithms
Heat conductivity
Heat transfer
Liquid flow
Machine learning
Mass flow rate
Mathematical models
Microchannels
Neural networks
Nonuniform flow
nonuniform heat source
Optimization
Semiconductors
Temperature distribution
Thermal management
Uniform flow
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Summary:A numerical simulation model of embedded liquid microchannels for cooling 3D multi-core chips is established. For the thermal management problem when the operating power of a chip changes dynamically, an intelligent method combining BP neural network and genetic algorithm is used for distribution optimization of coolant flow under the condition with a fixed total mass flow rate. Firstly, a sample point dataset containing temperature field information is obtained by numerical calculation of convective heat transfer, and the constructed BP neural network is trained using these data. The “working condition–flow distribution–temperature” mapping relationship is predicted by the BP neural network. The genetic algorithm is further used to optimize the optimal flow distribution strategy to adapt to the dynamic change of power. Compared with the commonly used uniform flow distribution method, the intelligently optimized nonuniform flow distribution method can further reduce the temperature of the chip and improve the temperature uniformity of the chip.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi13060918