Flow in a three-dimensional narrow-gap horizontal annulus with nanofluid DOI
Xiudan Huang, Kambiz Vafai

Physics of Fluids, Год журнала: 2025, Номер 37(5)

Опубликована: Май 1, 2025

The three-dimensional (3D) natural convection utilizing a nanofluid in narrow-gap horizontal annulus is investigated. influence of Rayleigh number (Ra) and nanoparticle volume fraction (φ) on flow dynamics characteristics heat transfer Ra varies between 8000 10 000, whereas φ the range 0–0.09. findings demonstrate that an increase correlates with rise maximum stream function value, resulting more isothermal deformation. Moreover, increased fractions lead to diminished roll size affected by φ. At = 0, exhibits crescent-shaped primary alongside opposing tadpole-shaped roll; when grows 0.04, small decreases into strip structure, it vanishes completely at 0.08. Instability onset occurs end walls. progressively converges toward center over time, amplifying intensity dimensions, considerable isotherm distortion. Three-dimensional circulation patterns are established, encompassing transverse rolls axial movement roll. As increases, average Nusselt (Nu¯i) first subsequently rises for greater than 0.06. Comprehensive simulations produce generalized correlations Nu¯i related φ, exhibiting divergence under 3.5% from correlation equation.

Язык: Английский

Magnetohydrodynamic nanofluids flow and heat transfer with radiative heat flux and exothermic chemical reactions DOI Creative Commons
Md. Mehedi Hasan, M. J. Uddin, Salah A. Faroughi

и другие.

International Journal of Thermofluids, Год журнала: 2025, Номер unknown, С. 101114 - 101114

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Editorial: Advances in Heat Transfer Science: Enhanced Techniques for Modern Industrial Applications DOI Creative Commons
Ali Alahmer, Ahmed Al-Manea, Raed Al-Rbaihat

и другие.

International Journal of Thermofluids, Год журнала: 2025, Номер unknown, С. 101145 - 101145

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Magnetohydrodynamic Nanofluid Flow in a U-Shaped Enclosure under Radiative Heat Flux and Exothermic Chemical Reactions DOI
M. J. Uddin,

S.K. Rasel

Thermal advances., Год журнала: 2025, Номер unknown, С. 100044 - 100044

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Flow in a three-dimensional narrow-gap horizontal annulus with nanofluid DOI
Xiudan Huang, Kambiz Vafai

Physics of Fluids, Год журнала: 2025, Номер 37(5)

Опубликована: Май 1, 2025

The three-dimensional (3D) natural convection utilizing a nanofluid in narrow-gap horizontal annulus is investigated. influence of Rayleigh number (Ra) and nanoparticle volume fraction (φ) on flow dynamics characteristics heat transfer Ra varies between 8000 10 000, whereas φ the range 0–0.09. findings demonstrate that an increase correlates with rise maximum stream function value, resulting more isothermal deformation. Moreover, increased fractions lead to diminished roll size affected by φ. At = 0, exhibits crescent-shaped primary alongside opposing tadpole-shaped roll; when grows 0.04, small decreases into strip structure, it vanishes completely at 0.08. Instability onset occurs end walls. progressively converges toward center over time, amplifying intensity dimensions, considerable isotherm distortion. Three-dimensional circulation patterns are established, encompassing transverse rolls axial movement roll. As increases, average Nusselt (Nu¯i) first subsequently rises for greater than 0.06. Comprehensive simulations produce generalized correlations Nu¯i related φ, exhibiting divergence under 3.5% from correlation equation.

Язык: Английский

Процитировано

0