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RESEARCH PROGRAM
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Research Units
Similar research programs:
- 1 - Prediction of thermofluiddynamic and structural effects of fires in underground constructions
- 2 - Learning Hierarchical, Abstract Models from Temporal or Spatial Data
- 3 - AEROELASTIC PHENOMENA AND OTHER DYNAMIC INTERACTIONS ON NON-CONVENTIONAL BRIDGES AND FOOTBRIDGES
- 4 - Web Ram: Web Retrieval and Mining
- 5 - Innovative numerical and experimental methods for the design of secondary stability in hip arthroplasty
- 6 - Optimisation of the Structural, Technological and Functional Performance of Construction Methodologies and Materials in Tunnel Linings
- 7 - Multiscale modelling and development of process reactors for polymeric nanoparticle precipitation
- 8 - Experimental analysis, modeling and simulations of bioslurry reactors for soil remediation
- 9 - Modelling and Numerical Environment for the Magnetogasdynamic Design of Hypersonic Vehicles.
- 10 - Structural joints, physical discontinuities and material interfaces: analysis and experimental testing.
Scientific and education field classification
International Patent Classification
- FIXED CONSTRUCTIONS
- EARTH DRILLING; MINING
- SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- EARTH DRILLING; MINING
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING ENGINES OR PUMPS
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- COMBUSTION APPARATUS USING FLUENT FUEL (combustion apparatus for solid fuel only F23B; burners F23D; constructional details of combustion chambers not otherwise provided for F23M; combustion chambers for generating combustion products of high pressure or high velocity F23R)
- HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A01G13/06; baking ovens and apparatus A21B; cooking devices other than ranges A47J; forging B21J, B21K; specially adapted for vehicles, see the relevant subclasses of B60 to B64; combustion apparatus in general F23; drying F26B; ovens in general F27; electric heating elements and arrangements H05B)
- AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING (devices for ventilating greenhouses A01G [N: F24F9/24; air-conditioning systems for greenhouses A01G9/24E]; animal husbandry A01K, e.g. controlling humidity in incubators A01K41/04; disinfecting or sterilising of air A61L; devices for reconditioning breathing air in sealed rooms or for ventilating gas-proof shelters A62B; filtering, washing or drying of gases B01D; mixing gases with vapours or liquids in general B01F3/00; spraying B05B, B05D; removing dirt or fumes from areas where they are produced B08B15/00; ventilation, air-conditioning or cooling, specially adapted for vehicles, see the relevant vehicle places, e.g. B60H, B61D27/00, [N: B64D13/00]; production of ozone C01B13/10; chimneys or flues E04F17/02, E04H12/28, F23J11/00, F23L17/02; air ducts or conduits E0417/04, F16L; ventilation in doors or windows E06B7/02; fans, blowers F04; noise-absorbing in pipes or pipe systems F16L; tops for chimneys and ventilating shafts F23L; cooling F25; details of heat-exchange or heat-transfer apparatus, of general application F28F; apparatus for generating ions to be introduced into non-enclosed gases, e.g. the atmosphere H01T23/00)
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- PHYSICS
- MEASURING (counting G06M); TESTING
- MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME (milk flow sensing devices in milking machines or devices A01J5/01; measuring or recording blood flow A61B5/02, A61B8/06; metering media to the human body A61M5/168; burettes or pipettes B01L3/02; arrangements of liquid volume meters or volume-flow meters in liquid-delivering apparatus, e.g. for retail sale purposes, B67D5/16; pumps, fluid motors, details common to measuring or metering devices and pumps or fluid motors F01 to F04; [N: sampling G01N1/00]; locating, determining distance or velocity using reflection or reradiation of radio waves, analogous arrangements using other waves G01S; systems for ratio control G05D11/00; [N: coin-freed apparatus for metering flow of liquid or gas G07F15/00]) [C9607]
- MEASURING (counting G06M); TESTING
Geographical classification
- Region: Veneto
Bibliografia
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[18] Baggio P., Bonacina C., Schrefler B. A., (1997). “Some considerations about modeling heat and mass transfer in porous media”, Transport in Porous Media, vol. 28, p. 233-251.
[19] Baggio P., Campanale M., Moro L., (2001). “Analytical and experimental investigations on the transient heat transfer process in moist wood wool slabs”, Journal of Thermal Environment and Building Science, vol. 24, n.3, p. 211-225.
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Keywords
HEAT AND MASS TRANSFER, THERMOFLUIDDYNAMICS, RISK ASSESSMENT, FIRE, TUNNELPrediction of thermo-fluid-dynamic and structural effects of tunnel fires, for risk analysis and emergency management
Università degli Studi di PadovaAbstract
Since a long time tunnels are very attractive for easier communications (by road or rail) in presence of natural obstacles (such as mountains and rivers) or even existing urban areas. Not surprisingly, Italy with its peculiar orographic conformation and geographic positioning, has the highest European tunnel lenght (more than 1900 km, not including city metro tunnels), equal to 27% of the European total. However, in parallel with an always increasing interest for underground transportation structures, there is also an increasing concern for possible fire emergencies occurring inside tunnels, taking into account the peculiar geometry of such infrastructures and the intrinsic risk of many freights.Therefore, continuing a research activity started in 2004 within a PRIN Project, this new research Project aimed to maintain the effective links established among several Italian research groups which are very active in different fields related to tunnel fires, ranging from combustion to fluid-dynamics, from thermo-structural problems to construction technologies and ventilation systems.
The strict cooperation among these groups, each bringing its know-how, will allow not only for studying all the different aspects the fire scenario, strictly interrelated to each other, but especially for developing an unitary approach for risk assessment and safety planning, as requested by designers, traffic managers and local authorities.
Principal Investigator
Pierfrancesco Brunello Università degli Studi di PADOVAResearch Objectives
As already mentioned, this Research Project will be addressed to proceed in the research field already dealt with during previous activities financed by MIUR for the years 2004-2006, with the scientific coordination of prof. P. Brunello.In this regard, several changes have been also introduced, both in the Units participating to the Project, and in the researchers involved; thus, specific competences have been added, especially in the fields of electrical and ventilation systems and in the area of risk assessment and emergency management.
The main activities will be briefly described hereafter, but the reader will certainly find more information in the B Models of the various Research Units.
From the very beginning of the biennal activity, the various numerical models will be upgraded and accompanied by suitable experimental measurements, in order to provide the necessary input data and also to validate the numerical results against experimental data.
Starting from combustion phenomena, the Unit of TRENTO (prof. Baggio) is planning to gain a better knowledge of the behavior of materials during a fire both trough experimental investigations and by extending the capabilities of the numerical model previously developed. Such aim will be pursued by experimental analyses of pyrolysis taking place during the heating phase of materials affected by open fire: this activity will be carried out by heating the materials according to a preprogrammed >>>
Timescale
24 monthsNational and international background
It is well known that for obtaining reliable analyses of tunnel fires, various phenomena related to different research fields have to be considered at the same time.Traditionally, fluid-dynamics is certainly dominant when tunnel fires are analysed, because of the strong effects of fire on temperature and nature of the fluids involved (fresh air and combustion products). This situation is also due to the fact that fluid-dynamics is important also for the simulation of tunnels under normal operative conditions, since the evaluation of the air quality is often required.
For this purpose classical semi-empirical relationships, based on the energy and mass balance of ducts, have been used for a long time. Some applications of this kind have been proposed also by international institutions, for instance the “Centre d’Études des Tunnels (CETU)” in France.
Recently, since computational resources drastically improved, the possibilities offered by the so-called CFD (Computational Fluid Dynamics) have been often emphasized. In fact, nowadays several CFD codes are available, both for general purposes and specifically for fluid-dynamic analyses of tunnels (also during fire). One of the most important dedicated software is SOLVENT, developed by ASHRAE in the framework of the “Memorial Tunnel Fire Ventilation Test Program” [1].
However, in spite of the above mentioned improvements of computational capabilities, CFD analyses still require considerable resources >>>



