RECENT ADVANCES in FLUID MECHANICS and HEAT ... - Portal

RECENT ADVANCES in FLUID
MECHANICS and HEAT & MASS
TRANSFER
Proceedings of the 9th IASME / WSEAS International Conference on
FLUID MECHANICS & AERODYNAMICS (FMA '11)
Proceedings of the 9th IASME / WSEAS International Conference on
HEAT TRANSFER, THERMAL ENGINEERING and
ENVIRONMENT (HTE '11)
Florence, Italy
August 23-25, 2011
Published by WSEAS Press ISBN: 978-1-61804-026-8
HTUwww.wseas.orgUT

RECENT ADVANCES in FLUID
MECHANICS and HEAT & MASS
TRANSFER
Proceedings of the 9th IASME / WSEAS International Conference on
FLUID MECHANICS & AERODYNAMICS (FMA '11)
Proceedings of the 9th IASME / WSEAS International Conference on
HEAT TRANSFER, THERMAL ENGINEERING and
ENVIRONMENT (HTE '11)
Florence, Italy
August 23-25, 2011
Published by WSEAS Press
www.wseas.org
Copyright © 2011, by WSEAS Press
All the copyright of the present book belongs to the World Scientific and Engineering Academy and
Society Press. All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, without the prior written permission of the Editor of World Scientific and Engineering Academy
and Society Press.
All papers of the present volume were peer reviewed by two independent reviewers. Acceptance was
granted when both reviewers' recommendations were positive.
See also: http://www.worldses.org/review/index.html
ISBN: 978-1-61804-026-8
World Scientific and Engineering Academy and Society
Universita degli Studi di Genova

Plenary Lecture 14: Conservative Averaging Method for Linear and Non-Linear Heat Problems 30
Andris Buikis
Semi-Analytical, Semi-Numerical Approach to Stability Analysis of Nonparallel Unsteady Flows 31
Georgy I. Burde, Ildar Sh. Nasibullayev, Alexander Zhalij
Acoustics And Instability Of High-Speed Boundary Layers 37
Gaponov S.A.
Studies Regarding Designing and Testing of a Multicolor Helical Wind Turbine with Vertical
Axis for a Power of 1000 W
Badea Lepadatescu, Nicolae Mugea, Adela-Eliza Dumitrascu, Enescu Ioan
Numerical Optimization of Flow-Heat Ducts with Helical Micro-Fins, Using Entropy Generation
Minimization (EGM) Method
Piotr Jasinski
43
47
Hexavalent Chromium Reduction with Scrap Iron. The Effect of Cr(Vi) Initial Concentration 55
Marius Gheju, Ionel Balcu
Optimization of the Energy Consumption in the Industrial Cycle of Soot Production Using Pinch
Technology
Ashkan Ghafouri, Mehdi Salari
61
Real Soil Treatment by Chemical Oxidation: Aqueous Sodium Percarbonate Application 68
Ruth G. De La Calle, Paula C. Marinosa, F. Javier Rivas, Olga Gimeno
Real Soil Treatment by Chemical Oxidation: Hydrogen Peroxide Application 73
Paula C. Marinosa, Ruth G. De La Calle, F. Javier Rivas, Olga Gimeno
Correlation Function Approach for Estimating Thermal Conductivity in Highly Porous Fibrous
Materials
Jorge Martinez-Garcia, Leonid Braginsky, Valery Shklover, John W. Lawson
Chemical Characterization of Dry Atmospheric Deposition in a Natural Protected Area Impacted
by an Oil-Fired Power Plant in Mexico
Ceron-Breton J. G, Ceron-Breton R. M., Cardenas-Gonzalez B., Ortinez-Alvarez J. A., Cruz-Chavez E.,
Diaz-Morales B., Carballo-Pat C. G., Retama A., Rivera O.
The Impact of Consumers Behaviour on the Difference Between Practical and Theoretical
Domestic Energy Consumption for Space Heating
Amaryllis Audenaert, Katleen Briffaerts
78
84
90
Influence of Surface Porosity on Supersonic Flat Plate Boundary Layer Stability and Transition 98
S. A. Gaponov, Yu. G. Yermolaev, A. D. Kosinov, V. I. Lysenko, N. V. Semionov, B. V. Smorodsky
Flow Associated with a Generic Catheter: Influence of SVC Wall on Jet Interaction 104
Emine Celik

Recent Advances in Fluid Mechanics and Heat & Mass Transfer
Studies Regarding Designing and Testing of a Multicolor Helical Wind
Turbine with Vertical Axis for a Power of 1000 W
BADEA LEPADATESCU 1 , NICOLAE MUGEA 2 ,
ADELA-ELIZA DUMITRASCU 1 , ENESCU IOAN 3
1 Manufacturing Engineering Department, 2 S.C. FINEX SRL, 3 Faculty of Mechanical Engineering
1,3 Transilvania University of Brasov
29 Eroilor Street, 500036 Brasov
ROMANIA
lepadatescu@unitbv.ro, finex@finex-solar.ro, dumitrascu_a@unitbv.ro, enescu@unitbv.ro
Abstract: - In the paper is presented a wind turbine with vertical axis helical type, which can have one or two
rotors on a common spindle which were performed in experimental tests very good energetic results even at
low wind speed. This type of wind turbine doesn’t need to be pointed into wind and PMG generator and
gearbox are placed close to the ground. One of the main advantage of this type of wind turbine is the fact that
is only one that was accepted by the environmental agencies, because of the special shape of the rotor doesn’t
kill birds that fly in the area where these turbine are mounted.
Key-Words: - wind turbine, green energy, energy management, respect for the environment
1 Introduction
Environmental pollution, greenhouses effect,
intensification due to the wide ranging of organic
fuel, as well care of energy supply to the future
generations caused the accelerator development of
technologies oriented to the realization of renewable
energy sources.
Environmental concerns are growing, interest in
environmental issues is increasing and the idea of
generating electricity with less pollution is
becoming more and more attractive. Unlike
conventional generation systems, “fuel” of the solar
photovoltaic energy and wind energy is available at
no cost.
Wind power is today the fastest growing
electricity generation technology. Impressive annual
growth rates of more than 35 % between 2001 and
2010 have made Europe into frontrunner in wind
energy technology development.
All around the world there is a number of small
isolated communities, like island and rural villages
without access to a large electricity grid. Further, in
many places, due to remoteness and cost, it is
unlikely that a main grid connection will ever be
established, as telecommunications stations,
inquiring centers, etc.
According to rough estimates, a significant
number of isolated consumers are spread all over
Europe, including mainly country houses,
inaccessible farms, shelters, telecommunications
stations, small islands, light houses, etc.
Additionally, a remarkable number of remote
consumers possess an outstanding wind potential.
Unfortunately, the absence of an electrical network
in their major area or the prohibitively high
consumers cost –due to large distances and peculiar
topography – force the remote consumers to cover
their urgent electrification needs to use small diesel
electric generators, with all the known problems of
pollution of environment and noise.
As it has been proved by a lot of researchers and
energy engineers, it will be a very positive and
economic solution the replacement of bigger part of
diesel generators with stand alone hybrid energy
systems, especially in medium and high wind and
solar potential locations. Power systems which can
generate and supply electricity to such remote
locations are variously termed - ”Remote
decentralized, autonomous, or stand alone”.
2 Wind Turbine with Vertical Axis to
Produce 1000 W
For the remote locations, and when is desired to be
independent regarding the electric energy source, it
was designed a wind turbine with vertical axis
helical type. This type of wind turbine is easy to
mount on the roof of a house, having the main
advantage of don’t need to be pointed into the wind
direction with a system as other types of wind
turbines. In the same time it works without any
noise and the shape of the rotor make these turbines
to be with any damage for the birds [2].
ISBN: 978-1-61804-026-8 43