Abonnement à la biblothèque: Guest
Page d'accueil ICHMT DL Année en cours Archives Comité de direction Centre international pour le transfert de chaleur et de masse


DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.1630
pages 1691-1708

Saurabh Bhardwaj
Department of Mechanical Engineering Indian Institute of Technology Guwahati Guwahati-781039, India

Amaresh Dalal
Department of Mechanical Engineering Indian Institute of Technology Guwahati Guwahati-781039, India

Gautam Biswas
Department of Mechanical Engineering, Indian Institute of Technology Guwahati, 781039 India


The present study numerically analyses the natural convection heat transfer and fluid flow behaviour having nano-fluids in a two-dimensional porous right-angled triangular enclosure having undulation on the left wall. The nano-fluids taken in this study are Cu-water and Al2O3-water. Darcy-Forchheimer model is used to simulate the momentum transfer in the porous medium. The stream function-vorticity equations are solved using finite-difference technique. The computations are done on a structured non-orthogonal body fitted mesh. The non-uniform heating of the enclosure has been considered for the study. The results are obtained to analyse the effect of Rayleigh number (103Ra ≤ 105), Darcy number (10−4Da ≤ 10−2) on the heat transfer and fluid flow. Solid volume fraction parameter ø of nanofluids is taken in the range of 0 ≤ ø ≤ 0.2. The results are presented in the form of streamlines, isotherms, local Nusselt number and average Nusselt number. It is found that the effective thermal conductivity of the nanofluid plays a huge role in increasing the heat transfer rate inside the enclosure. It is also observed that the more heat transfer can be achieved by using high thermal conductivity nanoparticles in the base fluid with large solid volume fraction.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH