Library Subscription: Guest
ICHMT DL Home Current Year Archives Executive Committee International Centre for Heat and Mass Transfer

Flow and Heat Transfer Characteristics of a Helically Coiled Heat Exchanger Using Different Turbulence Models

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2390
pages 2321-2332

Wei-Cheng Lin
Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan 30043

Yuh-Ming Ferng
Institute of Nuclear Engineering and Science, National Tsing Hua University Hsinchu, Taiwan 30043, ROC

Ching-Chang Chieng
National Tsing Hua University Engineering and System Science Department Hsinchu city, Taiwan; Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong

Abstract

This study investigates the thermal-hydraulic characteristics of helically coiled tube heat exchangers in high temperature gas reactors. In a heat exchanger, the high-temperature helium and low-temperature water flow through the shell side and the coiled tube, respectively. Three turbulence models are adopted in simulations: Realizable k−ε, low-Reynolds k−ε and Reynolds stress. Existing experimental data on the Nusselt (Nu) number validate the present CFD simulations using these turbulence models.

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