| Yazarlar |
Fethi Murat Altunay
|
|
Hayati Kadir Pazarlıoğlu
|
Doç. Dr. Mehmet GÜRDAL
Türkiye |
|
Mutlu Tekir
Karabük Üniversitesi, Türkiye |
|
Kamil Arslan
Karabük Üniversitesi, Türkiye |
|
Engin Gedik
Karabük Üniversitesi, Türkiye |
| Özet |
| The effects of alternating and constant magnetic fields on heat transfer characteristics of nanofluid flow in a dimpled tube have not been investigated either numerically or experimentally. In this context, the hydrothermal performance of Fe3O4/water (1.0 vol%) ferronanofluid flow in the dimpled tube (P/d = 3.75 and 11.25) has been examined under laminar flow regime (1131 ≤ Re≤2102) in this experimental study. While the magnitudes of magnetic fields are 0.16 T, the alternating magnetic field is utilized with square wave type at frequencies of 1, 2, 5 Hz. It is concluded that the dimpled tube causes up to 78.4% increase in Nusselt number compared to the smooth tube, while up to 118.9% increase in Darcy friction factor. The constant magnetic field enhances the Nusselt number up to 4.04% compared to the absence of a magnetic field using ferronanofluid as a working fluid. Higher frequencies of the alternating magnetic field results in higher thermal performance. Alternating magnetic field effect with f = 5 Hz offers 37.3% Nusselt number enhancement compared to the constant magnetic field effect in all tube geometries. It was also seen that P/d = 11.25 gives the highest Performance Evaluation Criteria while the magnetic field effect decreases it in all tube geometries. |
| Anahtar Kelimeler |
| Alternating magnetic field,Constant magnetic field,Ferronanofluid,Forced convection,Dimpled tube |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | International Journal of Thermal Sciences |
| Dergi ISSN | 1290-0729 |
| Dergi Tarandığı Indeksler | SCI |
| Dergi Grubu | Q1 |
| Makale Dili | İngilizce |
| Basım Tarihi | 09-2022 |
| Cilt No | 179 |
| Sayı | 107651 |
| Doi Numarası | 10.1016/j.ijthermalsci.2022.107651 |
| Makale Linki | http://dx.doi.org/10.1016/j.ijthermalsci.2022.107651 |
| Atıf Sayıları | |
| WoS | 20 |
| SCOPUS | 23 |
