kaz29Вестник Казахстанско-Британского технического университетаHerald of the Kazakh-British Technical University1998-66882959-8109Казахстанско-Британский Технический Университет10.55452/1998-6688-2023-20-3-26-37kaz29-761Research ArticleМАТЕМАТИЧЕСКИЕ НАУКИMATHEMATICAL SCIENCESВЛИЯНИЕ ТЕПЛОФИЗИЧЕСКИХ СВОЙСТВ ЖИДКОСТЕЙ НА КОНВЕКТИВНЫЙ ТЕПЛОПЕРЕНОС В ЭЛЕКТРОННЫХ УСТРОЙСТВАХTHE EFFECT OF THERMOPHYSIZAL PROPERTIES OF FLUIDS ON CONVECTIVE HEAT TRANSFER IN ELECTRONIC DEVICEShttps://orcid.org/0000-0002-1937-8615ИсаховА. А.IssakhovА. А.

Исахов Алибек Абдиашимович, Доктор PhD, профессор Школы прикладной математики

ул. Толе би, 59, 050000, г. Алматы

Issakhov Alibek Abdiashimovich, Doctor PhD, Professor of of School of Applied Mathematics

59, Tole bi street, Almaty, 050000

al.isakhov@kbtu.kzhttps://orcid.org/0009-0006-3522-8656БайбатыроваК. Е.BaibatyrovaК. Е.

Байбатырова Камилла Ермековна, Магистрант, Школа прикладной математики

ул. Толе би, 59, 050000, г. Алматы

Baibatyrova Kamilla Ermekovna, Master Student, School of Applied Mathematics

59, Tole bi street, Almaty, 050000

k_baibatyrova@kbtu.kzКазахстанско-Британский технический университетКазахстанKazakh-British Technical UniversityKazakhstan2023011020232032637Copyright © Исахов А.А., Байбатырова К.Е., 20232023Исахов А.А., Байбатырова К.Е.Issakhov А.А., Baibatyrova К.Е.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.kbtu.edu.kz/jour/article/view/761

Влияние соотношения сторон корпуса и различных теплофизических свойств жидкостей на теплопередачу было исследовано в прямоугольном корпусе с массивом микросхем размером 3х3, установленных заподлицо, размещенных на передней вертикальной стенке с постоянной температурой и охлаждаемых противоположной стенкой. Для изучения теплопередачи внутри корпуса было проведено моделирование для четырех соотношений сторон корпуса (A=1.0, 5.0, 7.5, 20.0) и пяти различных сред (воздух, вода, FC-40, FC-72, FC-88). Численные результаты показывают, что самые высокие скорости наблюдаются в воздухе, в то время как низкие скорости были замечены в воде и в трех диэлектрических жидкостях FC-40, FC-72, FC-88. Максимальные скорости воздуха для компонента W получены на высоте Z= 5.5. Замечено, что при уменьшении соотношения сторон корпуса скорость потока жидкости увеличивается. Максимальное число Nu было обнаружено, когда корпус был заполнен диэлектрическими жидкостями FC-72 и FC-88, а минимальное – в воздухе. Чтобы убедиться в том, что выбранные численные методы, компьютерная программа были реализованы корректно, была выполнена тестовая задача. Между результатами обнаружено хорошее соответствие.

The impact of enclosure aspect ratio and different thermophysical properties of fluids on heat transfer were investigated in rectangular enclosure with 3x3 array of flush-mounted chips placed on the front vertical wall with constant temperature and cooled by the opposite wall. To study heat transfer inside the enclosure simulations were done for four enclosure aspect ratios(A=1.0, 5.0, 7.5, 20.0) and five fluids(air, water, FC-40, FC-72, FC-88). Numerical results show that the highest velocities are in the air while low velocities have been noticed in the water, FC-40, FC-72, FC-88. The maximum air velocities for the W component are obtained precisely at a height of Z= 5.5. It is observed that when enclosure aspect ratio decreases, the fluid velocity increases. Maximum Nu number was when enclosure was filled with dielectric fluids FC-72 and FC-88, and minimal was found in the air. To ensure that chosen numerical methods, computer program was implemented correctly test task were completed. Good agreement is found between the results.

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The authors declare that there are no conflicts of interest present.