Numerical study of heat transfer and flow of nanofluid using multi-phase mixture model through elliptical tubes
Other Title(s)
دراسة عددية لانتقال الحرارة و جريان المائع النانوي باستخدام نموذج خليط متعدد الطور خلال أنابيب بيضوية
Joint Authors
Mahmud, Nabil Samir
al-Tajir, Ammar Muhammad Ali
Karam Allah, Abd al-Hasan Abd
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 26, Issue 6 (30 Jun. 2018), pp.294-308, 15 p.
Publisher
Publication Date
2018-06-30
Country of Publication
Iraq
No. of Pages
15
Abstract EN
This paper presents a numerical study of heat transfer of a fully developed turbulent flow inside elliptical tube with different aspect ratio of constant surface area, by using (AL2O3-water) nanofluid with average nanoparticles diameter (20 nm).
Multi-phase mixture model has been used to calculate the Nusselt number, nanofluid velocity, and pressure drop.
“The three-dimensional Navier-Stokes”, energy, and volume fraction equations are solved by ANSYS fluent with “finite volume method (FVM)”.
The numerical results show reasonable acceptance with error bounds approximately to (10.34%) upon pervious experimental works.
It is found that the increase in nanoparticles “volume concentration (φ)” will increase the Nusselt number with little “pressure drop” rise.
The elliptical tube with 0.25 aspect ratio gives best enhancement in heat transfer compared with circular tube with maximum Nusselt number (52.9%) and nanofluid volume concentration of 1.5%, but it is less effective in the process of transporting fluids to distance due to the high pressure drops between entry and exit of fluid compared to tube with circular sections within a certain range of Reynolds number (3000-9240).
American Psychological Association (APA)
Karam Allah, Abd al-Hasan Abd& Mahmud, Nabil Samir& al-Tajir, Ammar Muhammad Ali. 2018. Numerical study of heat transfer and flow of nanofluid using multi-phase mixture model through elliptical tubes. Journal of University of Babylon for Engineering Sciences،Vol. 26, no. 6, pp.294-308.
https://search.emarefa.net/detail/BIM-917949
Modern Language Association (MLA)
Karam Allah, Abd al-Hasan Abd…[et al.]. Numerical study of heat transfer and flow of nanofluid using multi-phase mixture model through elliptical tubes. Journal of University of Babylon for Engineering Sciences Vol. 26, no. 6 (2018), pp.294-308.
https://search.emarefa.net/detail/BIM-917949
American Medical Association (AMA)
Karam Allah, Abd al-Hasan Abd& Mahmud, Nabil Samir& al-Tajir, Ammar Muhammad Ali. Numerical study of heat transfer and flow of nanofluid using multi-phase mixture model through elliptical tubes. Journal of University of Babylon for Engineering Sciences. 2018. Vol. 26, no. 6, pp.294-308.
https://search.emarefa.net/detail/BIM-917949
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 306-307
Record ID
BIM-917949