# NUMERICAL SIMULATION OF HEAT TRANSFER IN TWO TURBULENT PLANE JETS IMPINGING ON A FLAT PLATE

DOI: 10.1615/ICHMT.2009.CONV.450
page 13

Fatiha Bentarzi
Theoretical and applied laboratory of fluid mechanics, University of science and Technology of Algiers USTHB, B.P: 32 Al Alia - BabEzzouar -16111- Algiers, Algeria

Amina Mataoui
Laboratoire de Mécanique des Fluides Théorique et Appliquée - Faculté de Physique Université des Sciences et de la Technologie Houari Boumediene

Nassira Nouali
Theoretical and applied laboratory of fluid mechanics, University of science and Technology of Algiers USTHB, B.P: 32 Al Alia - BabEzzouar -16111- Algiers, Algeria

Abdelali Terfous
Laboratoire de Génie de la Conception , INSA de STRASBOURG , 24, Boulevard de la Victoire − F-67084 − STRASBOURG - France

## Abstract

This study presents the numerical predictions of the fluid flow and heat transfer characteristics for impingement of two turbulent jets on a solid heated plate. The study is relevant to a wide range of practical applications including forced convection, manufacturing, material processing and electronic cooling, drying paper, textiles and tempering of glass. The turbulent governing equations are solved by a control volume- based finite-difference method with power-law scheme, the well known k-ε model, and its associate wall function to describe the turbulent behavior. The velocity and pressure terms of momentum equations are solved by the SIMPLE (Semi-Implicit Method for Pressure-Linked Equation) method. In this study non uniform staggered grids are managed. The power law interpolation scheme (PLDS) is used to achieve the best accuracy. The possibility of improving the heat transfer is carried out according to the characteristic parameters of the interaction jet-wall. The parameters interesting include jet exit Reynolds number (Re), dimensionless nozzle to surface space (D/W), the separating distance between the two jets and the difference of the temperature between the jet exit and the wall. For a fixed nozzle−plate distance, the influence of the Reynolds number on the heat transfer is investigated. Good agreement with previous studies of single jet and multijet is observed. Different type of interaction occur, when the wall is located before, within and after the merging region, The influence of the nozzle−plate distance and the Reynolds number on the Nusselt number is also discussed.

## 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