Download or read book Numerical Simulation of Natural Convection in Cavities Using the Finite Analytic Method microform written by Mehrdad Rahdar and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1998 with total page 166 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 Mehrdad Rahdar and published by . This book was released on 1998 with total page 0 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 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 Numerical Investigation of Natural Convection and Entropy Generation of Water Near Density Inversion in a Cavity Having Circular and Elliptical Body written by Nguyen Minh Phu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, a water-filled square cavity with left hot wall and right cold wall was numerically investigated. The hot and cold wall temperatures are 10¬∞C and 0¬∞C respectively to examine the density inversion of natural convection water, i.e. water at 4¬∞C. In the middle of the square, there are circular and elliptical bodies to study fluid,Äìstructure interaction in terms of the thermohydraulic behavior and entropy generation. 2D numerical simulation was performed using finite volume method in Ansys fluent software with the assumption of laminar flow. The simulation results are compared with benchmark data to determine reliability. The results indicate that the body insertions increase the convection heat transfer coefficients at the best heat transfer positions due to impingement heat transfer. An increase in heat transfer rate of 1.06 times is observed in the case of circular body compared to none. There are three primary eddies in the cavity with bodies, whereas the cavity without body has two primary eddies. Maximum entropy generation was found in the upper right corner of cavity mainly due to high horizontal temperature gradient. Bodies of circle and vertical ellipse have almost the same thermohydraulic and entropy generation characteristics due to the same horizontal dimension which mainly effects on the downward natural convection current. The entropy generation of cavity with circular body is 1.23 times higher than that of the cavity without body. At positions y/L¬†=¬†1 on the hot wall and y/L¬†=¬†0.74 on the cold wall, the convection heat transfer coefficient is close to zero due to stagnant fluid.

Download or read book Numerical Simulation of Natural Convection in Closed Containers Using a Fully Implicit Method written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical solutions have been obtained for two-dimensional free convective flow in rectangular and annular cavities using the strongly implicit procedure (SIP) and the cyclic reduction-fast Fourier transform (CR-FFT) technique. Rayleigh numbers range from 104 to 106, Prandtl numbers from 0.713 to 103, radius ratios from 1 to 3 (annular cavities), and aspect ratios (height/width) from 1 to 15. Motion is generated by either uniformly heating the bottom wall or heating a vertical wall (nondimensional temperature of 1) and cooling the opposite wall (nondimensional temperature of 0). Both time-dependent and steady state solutions confirm results previously obtained by others. The computational speed of the SIP and CR-FFT methods is very fast. Because SIP uses a common set of matrix algorithms, the governing equations of motion can be solved simultaneously without major modification to the method for each equation.

Download or read book Finite Element Simulation of Natural Convection in a Square Cavity with Localized Heating from Below written by Benyoussef Bisbis and published by . This book was released on 1985 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Convection From An Open Rectangular Cavity With Cylinder written by Sheikh Anwar Hossain and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite Element Simulation of two-dimensional laminar steady state natural convection in a rectangular open cavity has been studied. A heated circular cylinder is placed at the centre of the cavity where the left sidewall to the cavity is heated by a constant heat flux. The top wall is kept cool and the bottom wall is kept at a hot temperature. The fluid is concerned with different Prandtl numbers. The properties of the fluid are assumed to be constant. The physical problems are represented mathematically by different sets of governing equations along with the corresponding boundary conditions. In this study, finite element method for steady state incompressible natural convection flows is used to find the numerical results. The Galerkin Weighted Residual method of finite element formulation is applied to discretize the non-dimensional governing equations. The results of the investigation are obtained in terms of streamlines, isotherms and heat transfer characteristics Nusselt numbers for different Grashof numbers and different inclination angles of the cavity ranges from 0o to 45o.

Download or read book Numerical Simulation of Natural Convection in Ventilated Fa ades written by Milad Najafzadeh Babaei and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical simulation on the influence of surface convection on the laminar air flow induced by natural convection in vertical parallel plates is explained. This simulation discussed symmetrically and asymmetrically for uniform heated flux (UHF) and uniform wall temperature (UWT) cases. The effects of variable fluid parameters taken into account for incompressible Navier-Stokes equations. The thermophysical properties variation are determined from air temperature at the inlet of channel. Distribution of several parameters in different sections considered and visited for natural convection. Many tests in various conditions have been undertaken for incompressible Navier-Stokes equations to allow evaluating average Nusselt numbers and air mass flow rate in this thesis. It has found out narrow vertical channels with different aspect ratios exhibit different heat transfer behaviours. Influence of mesh refinement on physical characteristic behaviour has been investigated. Several specific numerical codes, based on stabilized finite element method (FEM) used to solve the incompressible Navier-Stokes equations within the air gap region. These specific codes are suitable to determine the accuracy of heat transfer behaviours in different areas.

Download or read book Simulation of Natural Convection Heat Transfer in an Enclosed Cavity Using Constrained Interpolated Profile Navier stokes Equation cipnse Method written by Chee Kin Loh and published by . This book was released on 2010 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Solutions for a Comparison Problem on Natural Convection in an Enclosed Cavity written by I. P. Jones and published by . This book was released on 1981 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Solutions for a Comparison Problem on Natural Convection in an Enclosed Cavity written by I. P. Jones and published by . This book was released on 1981 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Convection of Air in a Square Cavity written by Graham De Vahl Davis and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NATURAL CONVECTION IN CAVITIES WITH INTERNAL FINS written by SANKAR GANESH SUBRAMANIAN and published by LAP Lambert Academic Publishing. This book was released on 2010-11-30 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A numerical study has been carried out in differentially heated square cavities, which are formed by horizontal adiabatic walls and vertical isothermal walls. Three cases such as Natural convection in a cavity without any fins, with one fin and with two fins each placed equidistant from the center on the hot wall have been considered. Heat transfer by natural convection is studied by numerically solving equations of continuity, momentum and energy. A parametric study is carried out using the following parameters: Rayleigh number from 104 to 107, Prandtl number of 0.729, internal fin length of 0.10 m. A total of 24 cases have been considered and plotted using Fluent.

Download or read book THE FINITE DIFFERENCE COMPUTATION OF NATURAL CONVECTION IN AN ENCLOSED RECTANGULAR CAVITY written by James O. Wilkes and published by . This book was released on 1963 with total page 224 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 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.