What question did this study set out to answer?

The aim is to investigate how the internal structure of micro heat sinks affects heat and mass transfer.

April 18, 2026Thermophysics and Aeromechanics0 citations

Impact of the micro heat sink internal structure on the heat and mass transfer

NBN. B. BikkininaSystems Dynamics (United States)ABA. Z. BulatovaSystems Dynamics (United States)OSO. A. SolnyshkinaSystems Dynamics (United States)

Key Points

The aim is to investigate how the internal structure of micro heat sinks affects heat and mass transfer.
Analysis of liquid flow characteristics in microchannels
Comparison of internal geometries, including cylindrical pins and multi-scale systems
Evaluation of flow rate, velocity fields, and temperature distributions
Changing pin distribution significantly affects flow rates and velocity fields
Temperature distribution varies with different pin layouts
Findings support improved design of microfluidic heat sinks

Abstract

Due to the rapid development of the microelectronic industry, new efficient cooling systems are required. The most promising is the liquid cooling technology with the introduction of cooling devices directly into the microelectronic chips. In this paper, we study the liquid flow and its integral characteristics in microchannels with pin fin arrays. Various internal geometries of microchannels are considered, including both uniformly distributed cylindrical pins and systems with two packing scales. The effect of changing the pin spatial distribution in microchannels with the same void coefficient on the flow rate variation, velocity field and temperature distribution is shown. The results obtained can be used in the design of microfluidic heat sinks.

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