Literature Survey of Numerical Heat Transfer (2000–2009): Part II
10 Mar 2010-Numerical Heat Transfer Part A-applications (Taylor & Francis Group)-Vol. 57, Iss: 3, pp 159-296
TL;DR: A comprehensive survey of the literature in the area of numerical heat transfer (NHT) published between 2000 and 2009 has been conducted by as mentioned in this paper, where the authors conducted a comprehensive survey.
Abstract: A comprehensive survey of the literature in the area of numerical heat transfer (NHT) published between 2000 and 2009 has been conducted Due to the immenseness of the literature volume, the survey
Citations
More filters
01 Jan 2003
TL;DR: In this paper, an analytical solution of the problem of diffusional mass transport inside a spherical binary mixture droplet is presented, where the droplet evaporates according to the d2-law.
Abstract: An analytical solution of the problem of diffusional mass transport inside a spherical binary mixture droplet is presented. The droplet evaporates according to the d2-law. Mass fraction profiles of the mixture components are obtained as series expansions in confluent hypergeometric, Legendre and sine/cosine functions. The analytical description is valid for arbitrary ratio of the rate of shrinkage of the sphere surface to the diffusion coefficient in the liquid phase. The results allow for a prediction of the morphology of the dried particles, i.e., whether hollow or solid spheres result from the drying process. The field of application of the results presented is spray drying of solutions of solid substances.
42 citations
TL;DR: Significant growth is observed in scientific production particularly in the period from 2000–2015, and the countries that became evident as most productive on a scientific basis are the United States, Germany and China.
Abstract: Extensive analyses of technological developments and technology foresight studies have been vital to help prepare possible scientific scenarios for the future. The primary purpose of this type of foresight study is to utilise methods and attempt to assess development trends in science and technology. This paper presents an approach to find out the various trends in scientific studies in the field of drying brick/tile that are occurring in the world. All documents used in this study were obtained from the Scopus database. To shed light on drying trends, both bibliometric and network analyses were conducted in this research. For the bibliometric analysis, the Scopus database was systematically searched to obtain a dataset in relation to the drying of brick/tile. The year range covered from 1980 to 2015. On the other hand, the patent data used in the study were taken from the Espacenet international patent database. The same keywords coupled with bibliometric analysis were used to find the relevant patent data. Some parameters were considered, such as the number of documents, authorship and ownership, patterns of international collaborations, address, and number of times cited. The collaboration networks with co-citation analysis for authors were also analysed in this study. Significant growth is observed in scientific production particularly in the period from 2000–2015. The countries that became evident as most productive on a scientific basis are the United States, Germany and China.
39 citations
01 Jan 2004
TL;DR: In this paper, a finite-volume-based computational study of steady laminar forced convection inside a square cavity with inlet and outlet ports is presented, where the widths of the ports are equal to 5, 15 and 25 percent of the side.
Abstract: A finite-volume-based computational study of steady laminar forced convection inside a square cavity with inlet and outlet ports is presented. Given a fixed position of the inlet port, the location of outlet port is varied along the four walls of the cavity. The widths of the ports are equal to 5, 15 and 25 percent of the side. By positioning the outlet ports at 9 locations on the walls for Re = 10, 40, 100 and 500 and Pr = 5, a total of 101 cases were studied. For high Re and with the shortest distance between the inlet and outlet ports along the top wall, a primary CW rotating vortex that covers about 70 to 80 percent of the cavity is observed. Similar cases with smaller Re exhibit identical flow patterns but with weaker vortices as Re is lowered. As the outlet ports is lowered along the right wall, the CW primary vortex diminishes its strength; however a CCW vortex that is present next to the top right corner covers a greater portion of the cavity. With the outlet port moving left along the bottom wall, the CW primary vortex is weakened further and the CCW vortex occupies nearly the right half of the cavity. The temperature fields are directly related to the presence of the multiple vortices in the cavity. Regions of high temperature gradient are consistently observed at the interface of the throughflow and next to the solid walls on both sides of the outlet port. Local Nusselt numbers are low at 3 corners when no outlet port is present in their vicinity, whereas intense heat transfer rate is observed on the two sides of the outlet port. Between these minima and maxima, the local Nusselt number can vary drastically depending on the flow and temperature fields. By placing the outlet port with one end at the 3 corners, maximum total Nusselt number of the cavity can be achieved. Minimum total heat transfer of the cavity is achieved with the outlet port located at the middle of the walls.Copyright © 2004 by ASME
35 citations
TL;DR: A comprehensive survey of the literature in the area of numerical heat transfer (NHT) published in 2010 and 2011 has been conducted as mentioned in this paper, which can be used as a starting point for future work.
Abstract: Here a comprehensive survey of the literature in the area of numerical heat transfer (NHT) published in 2010 and 2011 has been conducted. Due to the immenseness of the literature volume, journals s...
30 citations
TL;DR: In this paper, the authors explore nonlinear mixed convection flow of nanomaterials (Prandtl-Eyring nanoliquid) with activation energy, and analyze cross-diffusion impacts.
Abstract: The aim of the study is to explore nonlinear mixed convection flow of nanomaterials (Prandtl–Eyring nanoliquid) with activation energy. Analysis of cross-diffusion (Soret and Dufour) impacts is addressed. Features of nanoliquid are analysed with thermophoresis and Brownian diffusion. Consideration of proper variables yields ordinary differential equations. Relevant system is tackled via numerical scheme. Significant outcomes are depicted graphically and elaborated in the relevance of sundry variables. Moreover, analysis of temperature and velocity gradients at the surface versus various variables of interest is tabulated and inspected.
29 citations
References
More filters
[...]
40,330 citations
Additional excerpts
...Reynolds Averaged Navier–Stokes (RANS): [99, 245, 407, 424, 1228, 1230, 1257, 1264, 1404, 1423, 1655, 1891, 2401, 2417, 2469, 2482, 2644, 2735, 2737, 2789, 2861, 2864, 3104, 3225, 3338]...
[...]
TL;DR: In this article, the authors considered seven slip mechanisms that can produce a relative velocity between the nanoparticles and the base fluid and concluded that only Brownian diffusion and thermophoresis are important slip mechanisms in nanofluids.
Abstract: Nanofluids are engineered colloids made of a base fluid and nanoparticles (1-100 nm) Nanofluids have higher thermal conductivity' and single-phase heat transfer coefficients than their base fluids In particular the heat transfer coefficient increases appear to go beyond the mere thermal-conductivity effect, and cannot be predicted by traditional pure-fluid correlations such as Dittus-Boelter's In the nanofluid literature this behavior is generally attributed to thermal dispersion and intensified turbulence, brought about by nanoparticle motion To test the validity of this assumption, we have considered seven slip mechanisms that can produce a relative velocity between the nanoparticles and the base fluid These are inertia, Brownian diffusion, thermophoresis, diffusioplwresis, Magnus effect, fluid drainage, and gravity We concluded that, of these seven, only Brownian diffusion and thermophoresis are important slip mechanisms in nanofluids Based on this finding, we developed a two-component four-equation nonhomogeneous equilibrium model for mass, momentum, and heat transport in nanofluids A nondimensional analysis of the equations suggests that energy transfer by nanoparticle dispersion is negligible, and thus cannot explain the abnormal heat transfer coefficient increases Furthermore, a comparison of the nanoparticle and turbulent eddy time and length scales clearly indicates that the nanoparticles move homogeneously with the fluid in the presence of turbulent eddies so an effect on turbulence intensity is also doubtful Thus, we propose an alternative explanation for the abnormal heat transfer coefficient increases: the nanofluid properties may vary significantly within the boundary layer because of the effect of the temperature gradient and thermophoresis For a heated fluid, these effects can result in a significant decrease of viscosity within the boundary layer, thus leading to heat transfer enhancement A correlation structure that captures these effects is proposed
5,329 citations
TL;DR: In this article, a model is developed to analyze heat transfer performance of nanofluids inside an enclosure taking into account the solid particle dispersion, where the transport equations are solved numerically using the finite-volume approach along with the alternating direct implicit procedure.
Abstract: Heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids is investigated for various pertinent parameters. A model is developed to analyze heat transfer performance of nanofluids inside an enclosure taking into account the solid particle dispersion. The transport equations are solved numerically using the finite-volume approach along with the alternating direct implicit procedure. Comparisons with previously published work on the basis of special cases are performed and found to be in excellent agreement. The effect of suspended ultrafine metallic nanoparticles on the fluid flow and heat transfer processes within the enclosure is analyzed and effective thermal conductivity enhancement maps are developed for various controlling parameters. In addition, an analysis of variants based on the thermophysical properties of nanofluid is developed and presented. It is shown that the variances within different models have substantial effects on the results. Finally, a heat transfer correlation of the average Nusselt number for various Grashof numbers and volume fractions is presented.
2,560 citations
"Literature Survey of Numerical Heat..." refers background in this paper
...Physically, they consist of rigid and randomly oriented particles of various sizes and shapes, and a viscous medium in which these particles are suspended [ 552 , 912 , 964 , 1910 , 2013 ]....
[...]
TL;DR: In this article, the authors proposed two different approaches for deriving heat transfer correlation of the nanofluid, and investigated the mechanism of heat transfer enhancement of the nano-fluid.
Abstract: The nanofluid is a solid–liquid mixture in which metallic or nonmetallic nanoparticles are suspended. The suspended ultrafine particles change transport properties and heat transfer performance of the nanofluid, which exhibits a great potential in enhancing heat transfer. The mechanism of heat transfer enhancement of the nanofluid is investigated. Based on the assumption that the nanofluid behaves more like a fluid rather than a conventional solid–fluid mixture, this article proposes two different approaches for deriving heat transfer correlation of the nanofluid. The effects of transport properties of the nanofluid and thermal dispersion are included.
2,355 citations
"Literature Survey of Numerical Heat..." refers background in this paper
...Physically, they consist of rigid and randomly oriented particles of various sizes and shapes, and a viscous medium in which these particles are suspended [ 552 , 912 , 964 , 1910 , 2013 ]....
[...]