ENERGY, ENTROPY, AND EXERGY ANALYSES OF SUDDEN EXPANSION TUBE WITH CONVEX SURFACE USING FERROFLUID
Küçük Resim Yok
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Begell House Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Energy, entropy, and exergy analyses have been examined in sudden expansion tube (SET), which used in many thermal applications such as heat exchangers, micro-scale industry application, with both smooth (ST) and convex fin (CFT) surfaces. For the purpose of enhancing the thermal and hydraulic efficiency a ternary approach in which SET, and nanofluid, and convex fin have been employed together. Numerical parametric analyses have been carried out under steady-state, fully developed flow, and constant heat flux conditions with laminar, transitional and turbulent flow regimes (500?Re?10000) using Finite Volume Method (FVM). Two different working fluids as water and ferrofluid (Fe3O4/water) with ?=2.0% volume fraction have used. According to numerical results, the highest increment in the average Nusselt number (Nu) was caused by ferrofluid oc-curred in the laminar flow regime, approximately 7.0%, and its effect on the Darcy friction factor (f) was approximately 4.0%. On the other hand, the average Nu increased nearly twofold under the effect of convex fins at the transitional flow regime. Convex fins severely affected the f, causing an in-crement of nearly 260% in the turbulent flow regime. In the irreversibility analysis, convex fins performed the lowest dimensionless total entropy generation reducing up to 46.0% and increased the second-law efficiency up to 14.0% at Re=2000. Furthermore, the results of first-law efficiency, exergy outlet, exergy loss, and pumping power were investigated in detail and entropy generation results were supported with contours. © 2024, Begell House Inc. All rights reserved.
Açıklama
9th International Symposium on Advances in Computational Heat Transfer, CHT 2024 -- 26 May 2024 through 30 May 2024 -- Istanbul -- 317889
Anahtar Kelimeler
Convex fins, Energy analysis, Entropy analysis, Exergy analysis, Performance evaluation criterion, Quadruple flow regime, Sudden expansion tube
Kaynak
International Symposium on Advances in Computational Heat Transfer
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
2024
