MERT GÜRTÜRK, HAKAN FEHMİ ÖZTOP, Khaled AL-SALEM

Farklı Malzemelerden Oluşan Açılı Şekillendirilmiş Bölmeler ile Bir Hacimdeki Birleşik Doğal Taşınım Isı Transferi

Bu nümerik çalışmada, boş bir kare içerisine yerleştirilen farklı yarıçaplardaki engellerin, doğal taşınım üzerindeki etkileri incelenmiştir. Kullanılan engeller farklı materyallerden tercih edilmiştir. Bu materyaller alüminyum, çelik ve tahtadır. Rayleigh sayısı 7·104’den, 4·106’ya değişmektedir. Yerleştirilen engellerin boyutsuz yarıçapları, R=0’dan engelsiz , R=1.12’ye kadar değiştirilmiştir. Sonlu hacim metodu, Fluent ticari kodu kullanılarak, ısı transferi ve momentum denklemleri çözümlenmiştir. Yerleştirilen engellerin yarıçapındaki değişiklik, kare içerisindeki akış ve sıcaklık dağılımını etkilemiş ve R=1’de en fazla ısı transferinin elde edildiği gözlemlenmiştir

Anahtar Kelimeler:

Açılı şekillendirilmiş engel, Birleşik ısı transferi, Doğal taşınım

Conjugate Natural Convection Heat Transfer in a Cavity with Arc-Shaped Partition with Different Materials

In this numerical study, the effects of inserting conductive arc-shaped baffles in a differentially heated, square cavity on natural convection heat transfer are investigated. The baffles are made from different materials such as aluminum, steel and wood. Rayleigh number is varied from 7x104 to 4x106. The nondimensional radius of the baffle is also varied from R=0 without partition to R=1.12. The Fluent commercial code with Finite volume method is used to solve the governing equations of flow and heat transfer. It is observed that heat transfer, temperature distribution and fluid flow are affected by changing the radius of the partition with the maximum heat transfer obtained at R=1.

Keywords:

Arc-shaped baffle, natural convection, conjugate heat transfer,

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