Suscripción a Biblioteca: Guest
Página principal de la Biblioteca Digital de ICHMT Año actual Archivos Comité Ejecutivo Centro Internacional de Transferencia de Calor y Masa

CFD modelling of turbulent airflow through plant systems using 3D canopy architecture

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.1240
page 12

A. Melese Endalew
BIOSYST-MeBioS, Katholieke Universiteit Leuven, Willem de Croylaan 42,B-3001 Leuven, Belgium

M. Hertog
BIOSYST-MeBioS, Katholieke Universiteit Leuven, Willem de Croylaan 42,B-3001 Leuven, Belgium

M.A. Delele
BIOSYST-MeBioS, Katholieke Universiteit Leuven, Willem de Croylaan 42,B-3001 Leuven, Belgium

Martine Baelmans
Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300 box 2421, 3001 Leuven, Belgium; Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; EnergyVille, Genk, 3600, Belgium

H. Ramon
K.U. Leuven, Department of Biosystems, Kasteelpark Arenberg 30, bus 2456, B-3001 Heverlee, Belgium

B. M. Nicolai
BIOSYST-MeBioS, Katholieke Universiteit Leuven, Willem de Croylaan 42,B-3001 Leuven, Belgium

P. Verboven
BIOSYST-MeBioS, Katholieke Universiteit Leuven, Willem de Croylaan 42,B-3001 Leuven, Belgium

Sinopsis

This work presents an integrated CFD model to simulate airflow through plant canopies using 3D architecture. The effect of the solid parts of the trees on airflow was resolved by introducing the actual architecture of the tree into the model. The effect of the leaves was modelled by adding source-sink terms in the momentum and turbulence equations in a sub-domain created around the branches that contain leaves. Based on wind tunnel experiments an accuracy of more than 92 % was obtained in all regions behind the tree for a model with leafless trees and with leafed and half leafed trees the model accuracy was more than 70 % for RMS velocity, U. The model in the atmospheric boundary layer (ABL) compared with previous works gave fairly good accuracy. The prediction capability of the model for turbulent kinetic energy, K both in the wind tunnel and in the ABL, though not as accurate as velocity and with some discrepancies, was good with physically meaningful vertical profiles.

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