Download or read book Natural Convection from a Horizontal Heat Sink Numerical Simulation Using Fluent 19 2 written by Hesham Khalil and published by Fluent Tutorials. This book was released on 2019-03-02 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural convection is a phenomenon occurs when heat is transferred to a fluid, which raises its temperature and decreases its density and consequently makes it flows upward. This book is a complete tutorial on how to simulate this kind of phenomenon using ANSYS Fluent 19.2. This is applied to a simple application of cooling a small surface using a heat sink. The tutorial starts with creating the 3D domain itself inside ANSYS DesignModeler, then discretizing it (Meshing) in ANSYS Meshing application. After that, the model is defined in Fluent with the appropriate boundary conditions. Finally, the output data is processed in Fluent to see the resulting flow around the heat sink and the temperature distribution in both the fluid and the heat sink itself.This a tutorial for the complete steps required to complete this kind of simulation. It is presented in the form of high-resolution screenshots of the applications' windows which are preceded by a textual description of the steps. Also, some of these screenshots are followed by an explanation of the different choices when seen appropriate.
Download or read book Numerical Simulation of Natural Convection in Rectangular Enclosures of Varying Aspect Ratios and Its Feasibility in Environmental Impact Management Studies written by Charles Randall Walker and published by . This book was released on 2012 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author's abstract: Numerical simulation was used to investigate natural convection in horizontal and vertical enclosures with and without an internal heat source. Natural convection in rectangular enclosures is found in many real-world applications. Included in these applications are the energy efficient design of buildings, operation and safety of nuclear reactors, solar collector design, passive energy storage, heat transfer across multi-pane windows, thermo-electric refrigeration and heating devices, and the design-for-mitigation of optical distortion in large- scale laser systems. Considering all these applications, especially controlling heat transfer in nuclear power plants, knowledge and research results of natural convection in enclosure play a vital role in environmental impact management studies. This study simulated horizontal enclosures heated from below (configuration 1) and vertical enclosures heated from the side (configuration 2) with a variety of different aspect ratios (AR) and Rayleigh numbers (Ra). Each aspect ratio (1, 2, 4, 6, 8, and 10) was examined using different sets of Rayleigh numbers. The first numerical experiment used only external Rayleigh number (RaE = 2×104, 2×105, and 2×106) which simulated natural convection in enclosures for outside temperature gradient only. The second case used a constant external Rayleigh number (RaE = 2×105) with a changing internal Rayleigh number (RaI = 2×104, 2×105, and 2×106). The third simulation used a constant internal Rayleigh number (Ra I = 2×105) and a changing external Raleigh number (RaE = 2×104, 2×105, and 2×106). All three cases were simulated for each configuration and at each aspect ratio. The streamline and isotherm flow patterns were created to reflect each case. The average heat flux ratio and convection strength were also calculated. Tests with the external temperature gradient only confirmed previous studies. There were many notable outcomes in this study which are discussed in the main body of this thesis work. When RaE> RaI, the results were similar to the study with a varying external Rayleigh number (RaE) and no internal heat source.
Download or read book CFD Calculation of Internal Natural Convection in the Annulus Between Horizontal Concentric Cylinders written by and published by . This book was released on 2002 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this heat transfer and fluid flow study is to assess the ability of a computational fluid dynamics (CFD) code to reproduce the experimental results, numerical simulation results, and heat transfer correlation equations developed in the literature for natural convection heat transfer within the annulus of horizontal concentric cylinders. In the literature, a variety of heat transfer expressions have been developed to compute average equivalent thermal conductivities. However, the expressions have been primarily developed for very small inner and outer cylinder radii and gap-widths. In this comparative study, interest is primarily focused on large gap widths (on the order of half meter or greater) and large radius ratios. From the steady-state CFD analysis it is found that the concentric cylinder models for the larger geometries compare favorably to the results of the Kuehn and Goldstein correlations in the Rayleigh number range of about 105 to 108 (a range that encompasses the laminar to turbulent transition). For Rayleigh numbers greater than 108, both numerical simulations and experimental data (from the literature) are consistent and result in slightly lower equivalent thermal conductivities than those obtained from the Kuehn and Goldstein correlations.
Download or read book Numerical Simulation of Natural Convection Heat Transfer Across a Roof with Varying Pitch Angle written by Rassil El Hage and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Heat Transfer and Thermal Engineering written by Chuang Wen and published by Springer Nature. This book was released on 2021-06-01 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected papers from the 16th UK Heat Transfer Conference (UKHTC2019), which is organised every two years under the aegis of the UK National Heat Transfer Committee. It is the premier forum in the UK for the local and international heat transfer community to meet, disseminate ongoing work, and discuss the latest advances in the heat transfer field. Given the range of topics discussed, these proceedings offer a valuable asset for engineering researchers and postgraduate students alike.
Download or read book Numerical Simulation of Turbulent Natural Convection in an Enclosure written by Francis Kimani Gatheri and published by . This book was released on 1994 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Verification of a Numerical Simulation Technique for Natural Convection written by A. Gadgil and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present paper describes a verification of CONVEC2 for single-zone geometries by comparison with the results of two natural convection experiments performed in small-scale rectangular enclosures. These experiments were selected because of the high Rayleigh numbers obtained and the small heat loss through the insulated surfaces. Comparisons are presented for (1) heat transfer rates, (2) fluid temperature profiles, and (3) surface heat flux distributions.
Download or read book NATURAL CONVECTION INSIDE A HORIZONTAL CYLINDER written by WILLIAM ROGERS MARTINI and published by . This book was released on 1956 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Natural Convection in a Radiating Fluid Enclosed in a Cavity written by G. Lauriat and published by . This book was released on 1982 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Verification of a Numerical Simulation Technique for Natural Convection written by A. Gadgil and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present paper describes a verification of CONVEC2 for single-zone geometries by comparison with the results of two natural convection experiments performed in small-scale rectangular enclosures. These experiments were selected because of the high Rayleigh numbers obtained and the small heat loss through the insulated surfaces. Comparisons are presented for (1) heat transfer rates, (2) fluid temperature profiles, and (3) surface heat flux distributions.
Download or read book Modelling and Numerical Simulation of Natural Convection in Buildings written by Edwin Haas and published by . This book was released on 1999 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Natural Convection in a Differentially Heated Vertical Channel written by Theodorus Antonius Maria Versteegh and published by . This book was released on 1998 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Convection written by Yogesh Jaluria and published by Pergamon. This book was released on 1980 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Natural Convection Flow in Open Cavities written by Morteza Nateghi and published by . This book was released on 2004 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Natural Convection in Porous Media written by D. Brian Spalding and published by . This book was released on 1984 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Convection Heat Transfer written by Vedat S. Arpaci and published by Prentice Hall. This book was released on 1984 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Natural Convection in Cavities Using the Finite Analytic Method written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
