...Shafiq Mohamad; Sachindra Kumar Rout; Jnana Ranjan Senapati; Sunil Kumar Sarangi An extensive numerical analysis is performed on a vertical cylindrical open cavity made of aluminum with varying thicknesses to study conjugate natural convection. The key purpose of this study is to evaluate...

...Assunta Andreozzi; Bernardo Buonomo; Yogesh Jaluria; Oronzio Manca A numerical study on natural convection in an inclined channel partially filled with open metal foam is investigated in two-dimensional laminar and incompressible and steady-state condition. The upper wall is heated at uniform heat...

... Transfer-Trans. ASME , 105 ( 3 ), pp. 454 – 459 . 10.1115/1.3245606 [3] Khan , J. , and Kumar , R. , 1989 , “ Natural Convection in Vertical Annuli: A Numerical Study for Constant Heat Flux on the Inner Wall ,” ASME J. Heat Transfer-Trans. ASME , 111 ( 4 ), pp. 909 – 915...

...J. M. Floryan; N. N. Haq; S. Panday An analysis of natural convection in horizontal slots has been carried out. It is demonstrated that a proper combination of heating and groove patterns can create a net horizontal fluid movement, which we refer to as the horizontal chimney effect. Groove shapes...

...Farah Zemani; Amina Sabeur A numerical investigation is performed to analyze air's steady natural convection phenomena in an enclosure with partial active sidewalls. A partition is attached to the hot wall for different active locations to study the effect of the partition position on the heat...

...Majed M. Alhazmy; Ibraheem Alqadi; Ali M. Al-Bahi This paper presents the results of a numerical simulation for the natural convection inside an enclosure that has an inner open square at its center. The inner square is open at the top and connected to the ceiling of the enclosure. The open inner...

... 2021 phase change material heat transfer closed cavity segmented wall natural convection The world population prospects of the United Nations (UN) [ 1 ] indicate that the population density in 2040 will be 70.7 persons per square kilometer, 18% more than 2020, which will have...

.... incompressible smoothed particle hydrodynamics natural convection heat transfer confined motion Boussinesq approximation particle image velocimetry (PIV) Heat transfer by natural convection in an enclosed space has received increasing attention in the past years because of its importance in many...

... 25 12 2020 22 02 2021 perforated cylinder natural convection Nusselt number hollow cylinder inline holes staggered holes correlation of Nusselt number Natural convection plays a vital role in cooling the electronics and electrical components, cooling of the nuclear fuel...

...Siva Subrahmanyam Mendu; Prasanta Kumar Das This paper reports the numerical investigations for steady-state natural convection in power-law fluids inside a square enclosure embedded with bottom discrete heaters. The lattice Boltzmann method (LBM) is employed to model the flow and heat transfer...

... . For simulating appropriately the effects of variable properties on natural convection flows in which sodium or gallium act as cooling agents, dependence laws for thermophysical properties as a function of temperature are developed from literature benchmark data. Numerical simulations are conducted...

... only for the natural convection inside open cavities and that too only for one aspect ratio (AR). The validity of the approach had not been evaluated for inclined, as well as, shallow cavities. This study focuses on the analysis of the accuracy of RDA against extended domain approach (EDA) in open...

...Subhashish Dasgupta; Abhishek Gupta Flow acceleration by imposing flow channelization structures like chimneys and/or solid barriers to improve natural convection cooling in pure fluids, is a well-known technique and a thoroughly investigated topic in thermal engineering. However, accelerating flow...

.... Various types of anodization were examined with different thickness of anodic aluminum oxide layer (AAO), pore size distributions, and surface coloring conditions. A customized natural convection and thermal radiation experimental chamber was built to measure the cooling capacity and heat sink...

...Ashish Saxena; Suneet Singh; Atul Srivastava The phenomenon of natural convection is investigated in three-dimensional (3D) cavities with four adiabatic walls and one hot wall. The surface opposite to the hot wall is either a wall (closed cavity) at a lower constant temperature or is open...

...Omprakash S. Bharti; Devesh Rajan; Arun K. Saha; Malay K. Das The present research proposes an inverse natural convection algorithm for simultaneous estimation of correct values of Prandtl number (Pr) and Rayleigh number (Ra). The inverse problem is formulated as the minimization of appropriate...

...Hayder I. Mohammed; Donald Giddings Heat and mass transfer are investigated numerically with steady-state laminar natural convection through a vertical cylindrical enclosure filled with a liquid-saturated porous medium. The vertical wall is under a constant magnetic field and various durations...

...Wei Wang; Ben-Wen Li; Zhang-Mao Hu The coupled phenomena of radiative–magnetohyrodynamic (MHD) natural convection in a horizontal cylindrical annulus are numerically investigated. The buoyant flow is driven by the temperature difference between the inner and outer cylinder walls, while...

... by the Heat Transfer Division of ASME for publication in the J OURNAL OF H EAT T RANSFER . Manuscript received August 30, 2018; final manuscript received December 21, 2018; published online February 4, 2019. Assoc. Editor: Srinath V. Ekkad. 30 08 2018 21 12 2018 natural convection...

...Salam Hadi Hussain; Mustafa Salah Rahomey Numerical simulations are carried out for fluid flow and natural convection heat transfer induced by a temperature difference between a hot inner cylinder with different geometries (i.e., circular; triangular; elliptic; rectangular; and rhombic) and a cold...