Elektronik Bileşenlerin Bir Çift Slot Jet ile Soğutulmasında Nozül Konumunun Soğutma Performansına Etkisi

Year 2024, Volume: 27 Issue: 2, 559 - 574, 27.03.2024

Buğra Sarper , Nida Emin Kirişçi , Melisa Albayrak

https://doi.org/10.2339/politeknik.1169199

Abstract

Bu çalışmada, elektronik bileşenlerin bir çift slot jet ile soğutulmasında nozül konumunun akış yapısı ve taşınımla ısı transfer karakteristiklerine etkileri sayısal olarak incelenmiştir. Nozül genişlikleri ve jet Reynolds sayıları eşit alınarak dört farklı nozül konumu (JK 1-2, JK 1-3, JK 1-4 ve JK 1-5) için Reynolds sayısının 100 ile 500 değerleri arasında, laminer rejimde iki-boyutlu hesaplamalar gerçekleştirilmiştir. Sayısal hesaplamalar ANSYS Fluent yazılımı ile yürütülürken, farklı Reynolds sayıları ve jet konumları için hız ve sıcaklık konturları, ısı kaynaklarının yüzeylerinde yerel ve ortalama Nusselt sayılarının değişimi ve genel ortalama Nusselt sayısının değişimi incelenmiştir. Çalışma sonucunda, akış yapısı ve taşınımla ısı transfer karakteristiklerinin nozül konumundan oldukça etkilendiği, sistemin geneli için taşınımla ısı transfer hızının JK 1-2’de diğer durumlara oranla daha yüksek olduğu ve ikinci nozülün çıkışa doğru kayması ile birlikte taşınımla ısı transfer hızının sistemin geneli için azaldığı belirlenmiştir.

Keywords

Çarpan jet, jet konumu, elektronik bileşen, ısı transferi, nozül konumu, ayrık ısı kaynağı, hesaplamalı akışkanlar dinamiği

The Impact of Nozzle Position on Cooling Performance in Electronic Components Cooling with Twin Slot Jets

Abstract

In this study, the impact of nozzle position on flow structure and characteristics of convective heat transfer in electronic components cooling with twin jet nozzles are investigated numerically. Assuming that nozzle widths and jet Reynolds numbers are equal, numerical calculations are performed in the laminar regime between the Reynolds number range of 100 and 500 for different nozzle positions (JP 1-2, JP 1-3, JP 1-4 and JP 1-5). Numerical calculations are realized via the ANSYS Fluent software, and velocity and temperature contours, local and mean Nusselt number variation on the heat sources’ surfaces and the overall mean Nusselt number variation are investigated for different nozzle positions and Reynolds numbers. As a result of the study, it is disclosed that the flow structure and characteristics of convective heat transfer are considerably influenced by nozzle position, the overall rate of convective heat transfer in JP 1-2 is higher than in the other cases, and it decreases with the displacement of the second jet towards the outlet.

Keywords

Jet impingement, jet position, discrete heat source, heat transfer, nozzle position, electronic component, computational fluid dynamics

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