Impacts of Non-Uniform Border Temperature Variations on Time-Dependent Nanofluid Free Convection within a Trapezium: Buongiorno's Nanofluid Model

被引：16

作者：

Revnic, Cornelia ^{[1
]}

Ghalambaz, Mohammad ^{[2
,3
]}

Grosan, Teodor ^{[4
]}

Sheremet, Mikhail ^{[5
]}

Pop, Ioan ^{[4
]}

机构：

[1] Univ Med & Pharm, Fac Pharm, Cluj Napoca 400012, Romania

[2] Ton Duc Thang Univ, Dept Management Sci & Technol Dev, Ho Chi Minh City 758307, Vietnam

[3] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City 758307, Vietnam

[4] Babes Bolyai Univ, Dept Appl Math, Cluj Napoca 400084, Romania

[5] Tomsk State Univ, Dept Theoret Mech, Tomsk 634050, Russia

来源：

ENERGIES | 2019年 / 12卷 / 08期

关键词：

natural convection; nanofluids; non-uniform wall temperature; numerical results; DIFFUSIVE NATURAL-CONVECTION; TRAPEZOIDAL ENCLOSURE; FLOW; LAMINAR;

D O I：

10.3390/en12081461

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The present study develops the influence of inclined border temperature variations on the isotherms, streamlines, and isoconcentrations for unsteady free convection in a trapezoidal region filled with the water-based nanofluid. The considered mathematical nanofluid approach was formulated based on the Buongiorno's model. The set of governing partial differential equations formulated using non-dimensional primitive variables such as velocity, pressure, temperature, and nanoparticles concentration volume fraction was solved numerically using the finite element method for various magnitudes of control characteristics. It was revealed that control characteristics affected the liquid circulation and energy transport coefficients. The Nusselt number is a growing function of wave number, amplitude, and the Rayleigh number.

引用

页数：14

共 48 条

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