Hydrothermal Performance of Ferrofluid Subjected to a Constant Magnetic Field Effect in a Teardrop Dimpled Tube
International Journal of Computational Fluid Dynamics, cilt.40, sa.1-2, ss.30-52, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 40 Sayı: 1-2
- Basım Tarihi: 2026
- Doi Numarası: 10.1080/10618562.2026.2714081
- Dergi Adı: International Journal of Computational Fluid Dynamics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Compendex, Environment Index, MathSciNet, zbMATH, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Earth, Atmospheric, & Aquatic Science Collection (ProQuest), Engineering Source (EBSCO), Technology Collection (ProQuest)
- Sayfa Sayıları: ss.30-52
- Anahtar Kelimeler: Constant magnetic field, dimpled fin, ferrofluid, performance evaluation criterion, teardrop dimple
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
In this study, the effect of constant magnetic field (MF) on the thermohydraulic performance (THP) of turbulent Fe3O4/H2O flow in teardrop-shaped dimpled tube (TDDT) is numerically investigated. Numerical analyses were performed at Reynolds numbers (10,000≤Re≤50,000) under a constant heat flux (q" = 20 kW/m2) and MF strengths (0.03T≤B≤0.3 T) applied at x/D = 20 (320–420 mm from the TDDT inlet) while the Fe3O4/H2O volumetric concentration was varied in the range of 0.0%≤φ≤2.0%. The results show that the use of teardrop-shaped dimple increases the Nusselt number (Nu) by 33.6% at Re = 50,000 with only a 4.2% increase in the friction factor (ff). Applying a B = 0.3 T enhances Nu by 12.7% at Re = 10,000 and φ = 2.0% while causing only a 2.1% increase in ff. The study demonstrated that applying MF to magnetizable ferrofluids (FFs) can be effectively utilised in engineering applications, particularly in heat exchangers, electronic cooling, and thermal systems.