Kare Kutu İçinde Fe3O4/Su’yun Doğal Konveksiyona Etkisi

Year 2021, Issue: 28, 675 - 683, 30.11.2021

Hayati Kadir Pazarlıoğlu , Mutlu Tekir

https://doi.org/10.31590/ejosat.1010066

Cited By: 2

Abstract

Doğal konveksiyon altında (103≤Gr≤105) 2D kutu içindeki (10 mm x 10 mm) Fe3O4/water karakteristiği detaylı olarak incelenmiştir. Modelimiz bir kutu içinde doğal konveksiyonun nano akışkanın varlığı durumunda analiz etmek için geliştirilmiştir. Sol duvar sıcak duvar, sağ duvar soğuk sıcaklıkta sabit tutulurken, yatay duvarlar yalıtımlı olarak tutulmuştur. Fe3O4/water (0≤φ≤1.0) nanoakışkanı kutu içindeki konvektif iyileştirmeyi analiz etmek için kullanılmıştır. Fe3O4/water nanoakışkanının akış karakteristiğimi ve ısı transferi performansı analiz etmek için sıcaklık eş eğrisi, hız akış çizgisi ve girdap akış çizgisi oluşturulmuştur. Sonuç olarak, baz akışkan içine nanoakışkan karıştırılması doğal konveksiyonu iyileştirmektedir. Ayrıca Grashof sayısı ısı transferi mekanizmasında önemli bir role sahiptir.

Keywords

Doğal konveksiyon, kutu, Grashof sayısı, Fe3O4/su, nanofluid, HAD

Impact of Fe3O4/water on Natural Convection in Square Enclosure

Abstract

Natural convection characteristics in a 2D square enclosure (10 mm x 10 mm) have been investigated detailly under natural convection conditions (103≤Gr≤105). A model has been developed to analyze the dispersed nanoparticle effect on natural convection performance in an enclosure. The left vertical wall is maintained at a high temperature, while the right vertical wall is kept at a low temperature, whereas horizontal walls are assumed to be insulated. Fe3O4/water (0≤φ≤1.0) nanofluid has been utilized to analyze the convection enhancement in the enclosure. To elucidate flow characteristics and heat transfer performance of Fe3O4/water nanofluid, temperature, velocity streamline, and vorticity contours have been taken place. It is concluded that nanoparticle dispersion in base fluid enhances the natural convection heat transfer. Also, Grashof number has an important role in heat transfer mechanism

Keywords

Natural convection, enclosure, Grashof number, Fe3O4/water, nanofluid, CFD

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