ライブラリ登録: Guest
ICHMT DL ホーム 今年 アーカイブ 執行委員会 熱・物質移動国際センター

Impingement of a confined axisymmetric jet on smooth and rough flat plates: near wall behaviour

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.710
12 pages

Juliana Braga Rodrigues Loureiro
Mechanical Engineering Program (PEM/COPPE/UFRJ) C.P. 68503, Rio de Janeiro, 21941-972, Brazil; Scientific Division, National Institute of Standard (INMETRO), Rio de Janeiro, Brazil

Atila P. Silva Freire
Mechanical Engineering Department, Federal University of Rio de Janeiro, Av. Moniz de Aragao 420, 21945-972 Rio de Janeiro, Brazil

要約

This paper investigates the influence of some governing parameters on the near wall characteristics of a circular impinging jet onto smooth and rough flat plates. Laser Doppler anemometry (LDA) and particle image velocimetry (PIV) are used to characterize the mean and turbulent fields including the wall shear stress. The experiments were conducted at one nozzle-to-plate space and Reynolds number of 35,000. The work discusses in particular a near wall parametrization scheme for the mean velocity profile that resorts to a scaling procedure based on the stream-wise evolution of the flow characterized by its maximum velocity.

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