Following the spirit of the past five meetings held in Japan, Australia,
United States, Germany and Canada, the
6th International Colloquium
on Bluff Bodies Aerodynamics and Applications

will be held in Milano, ITALY, from Sunday, July 20 to Thursday, July 24, 2008

The colloquium is a well established broad forum for exchanging results on the latest advances
in the study of the separated flow around Bluff Bodies both in terms of Fundamentals as well as Applications.


The scientific and general organisation of BBAA VI Colloquium are coordinated in agreement with IAWE.
The contributions for the sixth BBAA Colloquium will be focused on Fundamentals
and Applications especially in the following areas:

• Vortex shedding and wakes
• CFD and numerical simulations techniques
• Fluid-structure interaction

• Cables
• Bridges
• Buildings
• Vehicles and Sports
A special session on high-speed train aerodynamics will be organized.


Vortex shedding and wakes
Vortex shedding problems and vortex induced vibrations are a key feature in the field of bluff bodies
aerodynamics. The area involves the physics of the separated flow, the dynamic effects induced by
vortex shedding and the forces acting on the body invested by the blowing fluid. This subject can be
approached under numerical, analytical and experimental point of view and it is strictly connected to
various industrial field as oil industry and power utilities.

CFD and numerical simulation techniques
Today it is easy to have powerful calculators able to solve, in a reasonable time, CFD models of flow field
around bluff bodies. It is well known that separated flow are the most challenging,  and therefore
exciting, numerical problems numerical fluid-dynamics. BBAA VI will give the opportunity to compare
numerical and experimental approach to the same problems.

Fluid-structure interaction
The external geometry, i.e. the interface geometry seen by a blowing fluid, of several structures
can be considered as bluff bodies; in engineering practice it is necessary to compute the response
of this structures to wind or water actions, defining suited analytical and numerical tools.


Cable aerodynamics involves several engineering applications as overhead transmission lines, mooring
lines and risers or bridge stays and hangers, the problem is very complex because the cables could
experience different type of fluid-structure interactions, as vortex induced vibrations, galloping, wake
interaction and rain wind vibrations.

Bridges and wind engineering grew together in the last century, so it is not possible to face fluid
structure interactions problems without considering bridges. Nowadays the deck girders and bridge
towers are becoming longer an higher, i.e. more slender, and the flow induced dynamic is becoming
more and more important in defining bridge and stays design.

Wind effects are significant in determining global forces and cladding loads on both small and tall
buildings. Typically a building is a bluff body and its interaction with the wind involves the physics of the
separated flow with effects on the pressure distribution and hence on the global force. Moreover
separation on the surface induce negative pressure or very high overpressure that can produce buckling

Vehicles and Sports
Vehicles aerodynamics is a major industrial application of bluff bodies knowledge especially  because
a great interest is addressed to side wind effects on both road and rail vehicles which can be at risk
of a wind-induced accident especially on exposed sites such as embankments, viaducts and bridges.
In these last years, methods and techniques for assessing the safety road and rail vehicles in high winds
have been proposed by different authors and European project and the cross wind safety represents
nowadays an open and very interesting international subject.

Symposium on high speed train aerodynamic
In the field of high speed train aerodynamics, there are currently open issues which have direct impact
on the safety and reliability of high speed railway operation. The cross-wind effects on high speed trains
are one of the most critical problems especially for risk of vehicle overturning and track instability.
Moreover, in these last years, the cross wind safety theme has risen a great importance since a
“Technical Specification for Interoperability”, covering also this specific topic, needed. For these reasons,
the European Transportation Authorities and manufacturers have decided to joint into international
cooperation, before the Cross Wind Deufrako project and now the AOA (Aerodynamics in Open Air)
project. Between the objectives there are the set up of common methodologies for vehicle and line
aerodynamic characterization and pilot applications of results to evaluate the practicability of method.


The Colloquium is organized by the Research Centre for Wind Engineering (CIRIVE) of Politecnico
di Milano, and will be hosted at Campus Bovisa Politecnico by the Faculty of Industrial Engineering.

G. Diana, Conference Chairman, Italy
M. Belloli, Italy
F. Cheli, Italy
F. Fossati, Italy
S. Giappino, Italy
S. Muggiasca, Italy
F. Resta, Italy
D. Rocchi, Italy
L. Rosa Italy
A. Zasso Italy


G. Diana, Conference Chairman, Italy
C. Baker, United Kingdom
K. R. Cooper, Canada
N. P. Jones, USA
A. Kareem, USA
M. Matsumoto, Japan
S. Murakami, Japan
G. Solari, President IAWE, Italy
Y. Tamura, Japan
C. H. K. Willamson, USA


G. Bartoli, Italy
C. Borri, Italy
G. Buresti, Italy
L. Caracoglia, Italy
A. Cogotti, Italy
R. Flay, New Zealand
G. Gibertini, Italy
M. Hajj, USA,
M. Kasperski, Germany
A. Laneville, Canada
G. Larose, Canada
F. Ricciardelli, Italy
W. Rodi, Germany
H, Ruscheweyh, Germany
J. Sheridan, Australia
D. Sumner, Canada,
L. Vigevano, Italy
T. Yagi, Japan


Authors intending to present a paper at BBAA VI are invited to submit an extended abstract in English
language with a length of 1000-1500 words. The summary paper may include figures or graphs,
but should not exceed 4 A4 pages, since the papers will be selected on the basis of the abstracts
submitted, these must contain sufficient information on the problem definition, the scientific approach
and on the obtained results.
The summary papers will be reviewed and the papers accepted for presentation will be collected
in a volume of summary papers distributed at the Colloquium. The Authors of the papers accepted for
presentation will be asked to submit a full paper (up to 16 pages) before the Colloquium
scheduled date. The full papers will be collected in a CD enclosed in the summary papers volume
distributed at the Colloquium.

The abstract must be accompanied by the following information:
1. Title of the paper
2. Name of the Author(s)
3. Affiliation(s)
4. Contact Person
Complete mailing address
E-mail address
Telephone number

Download here the second call for paper
Paper template

Download here the Poster Template
Poster Template


Submission of 4 pages summary Paper until 04/30/2008 (+ 1 week later)
Submission of Full Paper (up to 16 pages) from 05/05/2008 to 06/27/2008
Early Registration June 27th


Download here the scientific programm
Download here the Colloquium programme table



To receive regular updates on BBAA VI please preregister by visiting
BBAA VI web site: or by email to

EARLY REGISTRATION FEE              € 550,00
FULL REGISTRATION FEE                € 600,00



- Sunday 20th July from 5 pm to 7.30 pm
Welcome drink at the congress venue

- Monday 21st July from 8.30 pm
Welcome party at Palazzo Reale, Piazza del Duomo 12 Milano

- Tuesday 22nd July
6.30 pm BBAA General Assembly
7.30 pm IAWE Executive Board Meeting
8.30 pm IAWE Executive Board Meeting

- Wednesday 23rd July from 8.30 pm
Social Dinner at Villa Parravicini – Como



Official language of the symposium is English.

Presenting facilities
For oral presentations the following presenting facilities will be provided:

  • PC+ beamer
  • Overhead projector
  • Laser pointer
  • Wireless microphone
If you need additional specific presentation hardware, please contact the local organising committee
as soon as possible, preferably using the e-mail address:
The software installed on the PC will be consist in Microsoft Powerpoint and Adobe Acrobat Reader.
If you are planning to use another software for your presentation, please also contact the local
organising committee. Please note that, in order to minimise time delays during the sessions,
plugging your laptop directly to the beamer will not be allowed (unless strictly necessary):
you may bring your presentation on a CD or floppy, or USB memory. Our staff will be provided
with USB memories to transfer your presentation from your own laptop to the PC used for
presentation, but please be aware that not all operative systems are "plug&play" compatible
with this kind of hardware. You are invited to check that your presentation is compatible
with the software installed on the PC used for presentation, well before the beginning of the session.

Power supply in Italy is the standard European Continental 220 V AC 50 Hz. For poster presentation,
a board will be provided to each Author. Authors of posters will be informed in due time about the exact
dimensions of the board.

Climate and clothing
Weather in Milano in middle July is mild/hot (daytime temperatures (Celsius degrees) min 25°C,
max 35°C).
For more information see
All rooms for the colloquium sessions are air-conditioned. We suggest that you have with you a light
pullover, because temperature could become relatively cool in case of bad weather, especially
in the evening.

Time zone
Italy standard time is GMT+1.

Currency and VAT/TAXES
The European Euro is the unit of currency. VAT is 20% on the purchase price of most items.

Foreign currency exchange and Traveller's checks
Purchasing of traveller’s checks in Euro or US dollars before departure is recommended. Some stores
in Italy will accept only Euro in cash only. Foreign currency exchange and cashing of traveller’s check
can be done at the major banks which can be found easily in Milan. Banks are open from 8:30 to 13:00
and one hour in the afternoon (many banks open from 14:30 to 15:30). Banks are closed on Saturday
and Sunday.

Credit Cards
American Express, Diners, MasterCard and VISA are usually accepted at major stores and hotels
in Italy, however, there are some major credit cards which are not accepted at shops, stores
and even at hotels in Italy.

Tipping is not necessary. A service charge is included in hotel and restaurant bills, etc.


Monday 21st July from 9.00 am

Tuesday 22nd from 9.00 am

Wednesday 23rd from 3.00 pm

Thursday 24th form 9.oo am

The detailed programme is available at


Milano is an important centre for culture, industry and finance. The city was founded on 590 b.C.
along a road linking the Mediterranean Sea to Northern Europe. Today Milano is the main city of
Lombardia, a region of northern Italy, and is well known for industry, culture and fashion.
Milano itself, its surroundings and the whole Lombardia region offer magnificent landscapes, with its
lakes and mountains, and cities with significant cultural heritage.

The conference will take place at Politecnico di Milano- Campus Bovisa located within the city of Milano,
and is very well served by public transportations system to the centre of the town.
The campus is very conveniently located with respect to the international airport of Malpensa (main
airport in Milano), as the trains connecting Malpensa to down-town Milano stop just outside the campus.

Politecnico di Milano wind tunnel and CIRIVE

The Colloquium will be held at the Politecnico di Milano, (Technical University of Milan) in Milano - Bovisa
Campus Sud, few kilometres north-west from downtown Milano, and easily reachable either from
downtown Milano and from Malpensa Airport by urban transportation.
The Bovisa Campus Sud hosts the Departments of Mechanical Engineering and Aerospace Engineering,
together with some of the most outstanding laboratories and research facilities owned by Politecnico
di Milano. The same campus also hosts the studies in Mechanical Engineering, Energetic Engineering,
Aerospace Engineering, organised in three levels: Bachelor (3-years degree), Master of Science
(2-years, following the Bachelor) and PhD (3-years, following the MSc).
Since October 2001 the Politecnico di Milano has a new Wind Tunnel (GVPM). The facility has
a dual aim, being designed to provide the highest technological standards for a wide range
of applications. In addition, its location in the academic environment of the Politecnico di Milano
denotes a strong commitment to the scientific approach. Thus the GVPM is both a research tool
and a modern instrument for high-technology industrial applications offering advantageous reciprocal
synergies. The GVPM has a special closed-circuit configuration, arranged in a vertical layout with two
test rooms in the loop. The larger one is located in the upper part of the loop and is intended for civil
engineering testing (Boundary Layer Test Section). The smaller one is located in the lower part of the
loop and is suitable for high speed low turbulence tests (Aeronautical test section).

How to reach the Bovisa Campus
From downtown Milano (Hotel area) by public transportation.
The Bovisa Campus Sud can be easily reached from Milano downtown by public transportation
by using "the S Lines" (also called "Passante ferroviario").
From station "Repubblica" or “Garibaldi” of "the S Lines" get on either a train for
BOVISA (S10 Line)
and get down in BOVISA station (the run lasts 8 minutes)
or a train for
and get down in VILLAPIZZONE station (the run lasts 10 minutes)
        By taxi
If you are using a taxi instead of public transportation, specify well the following address to the driver
Politecnico di Milano,
Via La Masa 34,
The taxi will leave you at the main entrance, E3 in the campus map. You will see the "L" building just
in front of you on the left.

From Malpensa Airport
At the airport get on the train to Milano ("Malpensa Express" one way ticket Eu 9,00). The total time
for the travel is 35 minutes, trains leave the airport each 30 min., for departure times refer to the
website of the "Ferrovie Nord Milano" ( Get out of the train in the station "MILANO
NORD BOVISA POLITECNICO" (please note that this is NOT the last stop of the train), then, while
getting out from the station, turn right, walk down the stairs and enter the gate in front of you
(gate E1 in the campus map) then walk (appr. 150 m) to the "L" building, that is the yellow steel
building that you will see in front of you at the opposite side of the court.
Travelling by taxi from Malpensa will not speed up very much your travel, and will be quite costly
(in the range of 40-50 Eu). Anyway, if you prefer to do so, read point 2.

From Linate Airport
Travelling from Linate Airport to the Bovisa Campus Sud is a little bit complicated and time consuming.
We suggest that you take a bus to the Central Railway Station "Milano Centrale"), then take Line 2
of the underground (the "green line"), direction ABBIATEGRASSO, and change in GARIBALDI station
(2 stops) to the "S" Lines, then follow instruction at point 1.

Bovisa Station name
Due to its long history, slight changes of location, and a certain amount of typical italian fantasy,
the BOVISA station has got many names. The official name is MILANO NORD BOVISA POLITECNICO,
but often Milan people call it simply Bovisa. (You can find the Bovisa station named "Bovisa Nord",
"Bovisa FN", "Bovisa FNM", "Milano Bovisa", "Milano Nord Bovisa", ...). In any case, the key word
is "Bovisa"', referring to this key word you will not miss the right stop.

        Milano urban transportation

Surface and underground urban transportation will allow you easy transfers throughout downtown
Milano and to / from the colloquium venue ( A map of underground railway lines in Milano
is shown below. You can buy tickets (1 Euro each, 10 ticket carnet 9,20 Euros) at any newspaper
kiosk / shop, or from automatic ticketing machines. The ticket is valid for 70 minutes on all surface
and underground transport systems, but allows you only one travel in the underground (that is once
you get out of the underground, if you want to take again the subway you have to stamp a new ticket).
If you take an underground line (line 1, 2 or 3) and then "the S lines", you can use the same ticket,
but you have to stamp it again.


Politecnico di Milano,
Milan Urban Trasportation,
Italian Railways,
Ferrovie Nord,
Milano Airport,
Wind Tunnel


Here you can download all the texts of the website
BBAA6 Pictures
BBAA6 Papers
BBAA6 Abstract


Scientific Secretariat

BBAA6 c/o Sez. Meccanica dei Sistemi,
Dipartimento di Meccanica
Via La Masa 34, 20156, Milano, Italy

Organizing Secretariat

Promo-est srl
Piazza Piemonte 2
20145 Milano, Italy
Tel: 0039 – 02 – 43912468
Fax: 0039 – 02 - 48018575