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Author: Chandra Sekhar Srigiriraju Publisher: ISBN: Category : Fluid dynamics Languages : en Pages : 43
Book Description
The problem of forced convection in a cavity is very well know and widely studied in the field of fluid mechanics. Numerous numerical techniques are present in literature which successfully simulate the fluid flow in a cavity upto a certain degree of accuracy. This present study is inspired by the physical phenomenon of fire in a ventilated aircraft cabin. Fluid flow inside a cavity is simulated numerically and the boussinesq approximation is considered in all the simulations. The governing equations and boundary conditions are solved using a commercially available code, namely Ansys Fluent. Benchmarking is done by solving the classic problem of a differentially heated two dimensional enclosed cavity. In first part of this study a rectangular cavity with vents is considered. Heat flux is applied to the bottom wall of the cavity. The inlet velocity and the heat flux applied are considered as parameters in the simulation. Different configurations of the cavity are considered by changing the location of the inlet and outlet vents. The simulations run are laminar as well as steady state in nature. The effects of buoyancy for varying heat fluxes are considered in detail. Comparative studies are done to find the best configuration in terms of heat removal. The second part of this study involves the numerical simulation of forced convection in a two dimensional aircraft fuselage cross-section with contains two seats. The seats are modeled as zero thickness walls and a temperature gradient is created by applying heat flux to them. The simulations are transient as well as turbulent in nature. Different configurations of the cross- iii section are considered. The velocity vector fields and the temperature contours are studied in detail. Comparative studies are done to find the most efficient configuration for heat removal.
Author: Chandra Sekhar Srigiriraju Publisher: ISBN: Category : Fluid dynamics Languages : en Pages : 43
Book Description
The problem of forced convection in a cavity is very well know and widely studied in the field of fluid mechanics. Numerous numerical techniques are present in literature which successfully simulate the fluid flow in a cavity upto a certain degree of accuracy. This present study is inspired by the physical phenomenon of fire in a ventilated aircraft cabin. Fluid flow inside a cavity is simulated numerically and the boussinesq approximation is considered in all the simulations. The governing equations and boundary conditions are solved using a commercially available code, namely Ansys Fluent. Benchmarking is done by solving the classic problem of a differentially heated two dimensional enclosed cavity. In first part of this study a rectangular cavity with vents is considered. Heat flux is applied to the bottom wall of the cavity. The inlet velocity and the heat flux applied are considered as parameters in the simulation. Different configurations of the cavity are considered by changing the location of the inlet and outlet vents. The simulations run are laminar as well as steady state in nature. The effects of buoyancy for varying heat fluxes are considered in detail. Comparative studies are done to find the best configuration in terms of heat removal. The second part of this study involves the numerical simulation of forced convection in a two dimensional aircraft fuselage cross-section with contains two seats. The seats are modeled as zero thickness walls and a temperature gradient is created by applying heat flux to them. The simulations are transient as well as turbulent in nature. Different configurations of the cross- iii section are considered. The velocity vector fields and the temperature contours are studied in detail. Comparative studies are done to find the most efficient configuration for heat removal.
Author: W. Minkowycz Publisher: CRC Press ISBN: 135146826X Category : Science Languages : en Pages : 421
Book Description
This volume discusses the advances in numerical heat transfer modeling by applying high-performance computing resources, striking a balance between generic fundamentals, specific fundamentals, generic applications, and specific applications.
Author: Mohsen Sheikholeslami Publisher: Elsevier ISBN: 0128141530 Category : Technology & Engineering Languages : en Pages : 782
Book Description
Application of Control Volume Based Finite Element Method (CVFEM) for Nanofluid Flow and Heat Transfer discusses this powerful numerical method that uses the advantages of both finite volume and finite element methods for the simulation of multi-physics problems in complex geometries, along with its applications in heat transfer and nanofluid flow. The book applies these methods to solve various applications of nanofluid in heat transfer enhancement. Topics covered include magnetohydrodynamic flow, electrohydrodynamic flow and heat transfer, melting heat transfer, and nanofluid flow in porous media, all of which are demonstrated with case studies. This is an important research reference that will help readers understand the principles and applications of this novel method for the analysis of nanofluid behavior in a range of external forces. Explains governing equations for nanofluid as working fluid Includes several CVFEM codes for use in nanofluid flow analysis Shows how external forces such as electric fields and magnetic field effects nanofluid flow
Author: Amimul Ahsan Publisher: BoD – Books on Demand ISBN: 9533075821 Category : Science Languages : en Pages : 410
Book Description
The convection and conduction heat transfer, thermal conductivity, and phase transformations are significant issues in a design of wide range of industrial processes and devices. This book includes 18 advanced and revised contributions, and it covers mainly (1) heat convection, (2) heat conduction, and (3) heat transfer analysis. The first section introduces mixed convection studies on inclined channels, double diffusive coupling, and on lid driven trapezoidal cavity, forced natural convection through a roof, convection on non-isothermal jet oscillations, unsteady pulsed flow, and hydromagnetic flow with thermal radiation. The second section covers heat conduction in capillary porous bodies and in structures made of functionally graded materials, integral transforms for heat conduction problems, non-linear radiative-conductive heat transfer, thermal conductivity of gas diffusion layers and multi-component natural systems, thermal behavior of the ink, primer and paint, heating in biothermal systems, and RBF finite difference approach in heat conduction. The third section includes heat transfer analysis of reinforced concrete beam, modeling of heat transfer and phase transformations, boundary conditions-surface heat flux and temperature, simulation of phase change materials, and finite element methods of factorial design. The advanced idea and information described here will be fruitful for the readers to find a sustainable solution in an industrialized society.
Author: Mohammad Mehdi Rashidi Publisher: Elsevier ISBN: 0443136262 Category : Technology & Engineering Languages : en Pages : 427
Book Description
Nanofluids are a new class of heat transfer fluids engineered by dispersing and stably suspending nanoparticles in traditional heat transfer fluids. Recently they have obtained global attention from the scientific community owing to their unique properties and significant applications in different engineering fields. Nanofluids: Preparation, Applications and Simulation Methods provides a comprehensive review of recent advances in this important research field. Different approaches for preparing some remarkable families of nanofluids such as aluminum oxide-based nanofluids, CuO/Cu-based nanofluids, carbon nanotubes/graphene-based nanofluids, ZnO-based nanofluids, Fe3O4-based nanofluids, and SiO2-based nanofluids are discussed in detail as well as their current and potential applications. Different approaches for numerical, semi-analytical and analytical simulations are also discussed including molecular dynamics, the Lattice Boltzmann method, and spectral methods, as well as advanced analytical techniques such as the Differential Transform Method, the Homotopy Analysis Method, and Optimal Homotopy Analysis. The book will be a valuable reference resource for academic and industrial researchers, materials scientists and engineers, nanotechnologists, and chemists working in the development of nanomaterials and nanofluids for heat transfer in energy and engineering applications. Covers the synthesis of nanostructures, preparation of nanofluids, different applications and proposed models for fluid mechanics and heat transfer Presents recent advances on preparation methods, including green chemistry-based methods for preparation of nanomaterials and nanofluids Includes novel model-based approaches such as molecular dynamics and Lattice Boltzmann methods Delves into applications in renewable energy technologies and thermal management Contains a Semi-analytical approach for solving Time-Fractional Navier-Stokes Equation
Author: W. Minkowycz Publisher: Routledge ISBN: 1351468251 Category : Science Languages : en Pages : 245
Book Description
This volume discusses the advances in numerical heat transfer modeling by applying high-performance computing resources, striking a balance between generic fundamentals, specific fundamentals, generic applications, and specific applications.
Author: Chandra Sekhar Srigiriraju
Author: Chandra Sekhar Srigiriraju
Author: W. Minkowycz
Author: Graham De Vahl Davis
Author: Mohsen Sheikholeslami
Author: Amimul Ahsan
Author: Graham De Vahl Davis
Author: 
Author: 
Author: Mohammad Mehdi Rashidi
Author: W. Minkowycz