Ters kavisli kesite sahip bükümlü bantların termohidrolik performansları

Müslüme Köşker; Fuat Yılmaz

doi:10.24012/dumf.489658

Ters kavisli kesite sahip bükümlü bantların termohidrolik performansları

Öz

Dairesel bir tüp içindeki ters kavisli kesitli bükülmüş bantların, ısı transferi, basınç düşüşü ve performans değerlendirme kriterleri (PDK) üzerindeki etkileri ANSYS Fluent v18 yazılımı kullanılarak sayısal olarak incelenmiştir. Analizler, üç farklı ters kavis çapının boru çapına oranını (0.872, 0.647 ve 0.554) ve iki farklı büküm oranını (3.0 ve 4.0) içermektedir. Çözümlemeler 5800 ila 30000 Reynolds sayısı aralığında hava kullanılarak gerçekleştirilmiştir Dış boru duvarına sabit ısı akışı uygulanmıştır. Sonuçlar, ısı transfer performansının büyük ölçüde bükümlü bant geometrisine bağlı olduğunu göstermiştir. Ters kavisli kesite sahip bükülmüş bandın Nusselt sayısı %0 ila %85 aralığında ve sürtünme faktörü %123 ila %238 aralığında düz borudan daha yüksek bulunmuştur. Ters kavisli bükülmüş bandın PDK değeri çalışılan Reynolds sayısı aralığında 0.75 ile 1.23 arasında bulunmuştur. En yüksek PDK değeri, maksimum çap oranı ve minimum büküm oranı için 5849 Reynolds sayısında 1.23 olarak hesaplanmıştır. Ters kavisli bükümlü bant ile teçhiz edilmiş tüpün Nusselt sayısı, sürtünme faktörü ve PDK'sı için istatistiksel korelasyonlar geliştirilmiştir.

Anahtar Kelimeler

Ters kavisli bükümlü bant,ısı transferinin iyileştirmesi,ısıl verim,sayısal analiz

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Details

Primary Language

Turkish

Subjects

-

Journal Section

Research Article

Authors

Müslüme Köşker This is me
0000-0002-1005-5289
Türkiye

Fuat Yılmaz ^*
Türkiye

Publication Date

March 27, 2020

Submission Date

November 29, 2018

Acceptance Date

January 8, 2019

Published in Issue

Year 2020 Volume: 11 Number: 1

DOI

https://doi.org/10.24012/dumf.489658

IZ

https://izlik.org/JA92XZ69DL

Cite

RIS / Bibtex

IEEE

[1]M. Köşker and F. Yılmaz, “Ters kavisli kesite sahip bükümlü bantların termohidrolik performansları”, DUJE, vol. 11, no. 1, pp. 183–192, Mar. 2020, doi: 10.24012/dumf.489658.

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