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

Two-phase flow and heat transfer
A NUMERICAL MODEL FOR 3D TRANSIENT EVAPORATION PROCESSES BASED ON THE VOLUME-OF-FLUID METHOD

Matthias Hase
Institute of Aerospace Thermodynamics (ITLR), University of Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany

Abstract

A method for the computation of evaporating two-phase flow with is presented. The method is based on a Volume-of-fluid (VOF) implementation. The aim of the new-implemented method is to obtain more knowledge about the evaporation during the highly dynamical spray processes by the investigation of single droplets or small droplet groups. The focus of the present work is on the fluid mechanical implementation and validation. The computational model of the evaporation rate itself is only a very simple one for a single component, which can and must be adapted to experimental results by a empirical factor. The derivation of the governing equations and the numerical implementation are described in detail. The capability of the interface transport algorithm is presented. Additionally, for the validation of the new-implemented method a comparison with experimental data for heat and mass transfer is performed. In a first step the vapour distribution around a droplet is compared with laser-induced fluorescence (LIF) measurements of the vapour field behind a droplet. In a second step the Sherwood number for different Reynolds numbers is compared with experimental data. A good qualitative agreement for the vapour distribution between experiment and simulation is found. The accuracy of the predicted Sherwood number depends, however, strongly on the empirical factor.

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