Three-dimensional natural convection around an inner circular cylinder located in a cubic enclosure with sinusoidal thermal boundary condition

Lee, Seong Han; Seo, Young Min; Yoon, Hyun Sik; Ha, Man Yeong

doi:10.1016/j.ijheatmasstransfer.2016.05.079

Cited by 27 publications

(5 citation statements)

References 23 publications

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“…The configurations commonly studied are air or water in a rectangular cavity of which two opposite (horizontal/vertical) walls are maintained at different constant and uniform temperatures (hot and cold) while the other walls are perfectly insulated (adiabatic). Many studies also introduce porous medium or solid J o u r n a l P r e -p r o o f 6 objects (flat plate, cylinder and sphere) in the cavity to observe their effects on heat transfer and airflow (Ataei-Dadavi et al, 2019;Lee et al, 2016). The knowledge acquired using a cavity filled with porous media can be applied to the case of small products such as cereal grains (ratio between characteristic lengths of product and cavity ≤ 0.02).…”

mentioning

confidence: 99%

Experimental investigation of airflow and heat transfer by natural convection in an insulated box with a Phase Change Material using a Particle Image Velocimetry technique

Leungtongkum¹,

Laguerre²,

Flick³

et al. 2023

Journal of Food Engineering

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mentioning

confidence: 99%

Experimental investigation of airflow and heat transfer by natural convection in an insulated box with a Phase Change Material using a Particle Image Velocimetry technique

Leungtongkum¹,

Laguerre²,

Flick³

et al. 2023

Journal of Food Engineering

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“…Recently, natural convection in a three-dimensional cubic enclosure immersed with cylinder has received much attention (Feldman 2018b;Lee et al 2016;Seo et al 2016;Spizzichino et al 2019b). Comparing with the twodimensional calculations, significant difference exists for the thermal and flow fields (Choi et al 2015b;Pandey et al 2019) as well as the surface-averaged Nusselt number (Choi et al 2015a) in the three-dimensional simulations, even the overall computational parameters are similar.…”

Section: Natural Convectionmentioning

confidence: 99%

Immersed boundary method for multiphase transport phenomena

Wei

Zhang

Luo

et al. 2020

Reviews in Chemical Engineering

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Multiphase flows with momentum, heat, and mass transfer exist widely in a variety of industrial applications. With the rapid development of numerical algorithms and computer capacity, advanced numerical simulation has become a promising tool in investigating multiphase transport problems. Immersed boundary (IB) method has recently emerged as such a popular interface capturing method for efficient simulations of multiphase flows, and significant achievements have been obtained. In this review, we attempt to give an overview of recent progresses on IB method for multiphase transport phenomena. Firstly, the governing equations, the basic ideas, and different boundary conditions for the IB methods are introduced. This is followed by numerical strategies, from which the IB methods are classified into two types, namely the artificial boundary method and the authentic boundary method. Discussions on the implementation of various boundary conditions at the interphase surface with momentum, heat, and mass transfer for different IB methods are then presented, together with a summary. Then, the state-of-the-art applications of IB methods to multiphase flows, including the isothermal flows, the heat transfer flows, and the mass transfer problems are outlined, with particular emphasis on the latter two topics. Finally, the conclusions and future challenges are identified.

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“…The combination of the conditions of the enclosure and the internal bodies provides various reach topics. Thus, numerous studies have dealt with the natural convection for the internal bodies in the enclosure by considering the individual condition or combined conditions such as the thermal boundary [1][2][3][4][5], the shape [3,4,[6][7][8][9], 3D effect [2,[10][11][12], the size [8,9,11,[13][14][15][16][17][18][19][20][21][22], the number of the internal bodies [23], the concentric and eccentric internal body [12,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40], Rayleigh number…”

Section: Introductionmentioning

confidence: 99%

Classification of Flow Modes for Natural Convection in a Square Enclosure with an Eccentric Circular Cylinder

Yoon¹,

Shim²

2021

Energies

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The present study investigated the natural convection for a hot circular cylinder embedded in a cold square enclosure. The numerical simulations are performed to solve a two-dimensional steady natural convection for three Rayleigh numbers of 103, 104 and 105 at a fixed Prandtl number of 0.7. This study considered the wide range of the inner cylinder positions to identify the eccentric effect of the cylinder on flow and thermal structures. The present study classifies the flow structures according to the cylinder position. Finally, the present study provides the map for the flow structures at each Rayleigh number (Ra). The Ra = 103 and 104 form the four modes of the flow structures. These modes are classified by mainly the large circulation and inner vortices. When Ra = 105, one mode that existed at Ra = 103 and 104, disappears in the map of the flow structures. The new three modes appear, resulting in total six modes of flow structures at Ra = 105. New modes at Ra = 105 are characterized by the top side secondary vortices. The corresponding isotherms are presented to explain the bifurcation of the flow structure.

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Three-dimensional natural convection around an inner circular cylinder located in a cubic enclosure with sinusoidal thermal boundary condition

Cited by 27 publications

References 23 publications

Experimental investigation of airflow and heat transfer by natural convection in an insulated box with a Phase Change Material using a Particle Image Velocimetry technique

Experimental investigation of airflow and heat transfer by natural convection in an insulated box with a Phase Change Material using a Particle Image Velocimetry technique

Immersed boundary method for multiphase transport phenomena

Classification of Flow Modes for Natural Convection in a Square Enclosure with an Eccentric Circular Cylinder

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