Modeling Flood in an Urban Area: Validation of Numerical Tools Against Experimental Data

2013 ◽  
pp. 207-220
Author(s):  
Quentin Araud ◽  
Pascal Finaud-Guyot ◽  
Fabrice Lawniczak ◽  
Pierre François ◽  
José Vazquez ◽  
...  
Keyword(s):  
Experimental Data ◽  
Urban Area ◽  
Numerical Tools

PAHs Modelling over Urban Area of Rome: Integration of Models Results with Experimental Data

2014 ◽  
pp. 349-354 ◽  
Author(s):  
Claudio Gariazzo ◽  
Camillo Silibello ◽  
Sandro Finardi ◽  
Paola Radice ◽  
Alessio D’Allura ◽  
...  
Keyword(s):  
Experimental Data ◽  
Urban Area

scholarly journals Numerical Tools Dedicated to Wind Engineering in Large Urban Area

2016 ◽  
Vol 04 (03) ◽  
pp. 22-29
Author(s):  
Li Wang ◽  
Sophie Puygrenier ◽  
Guillaume Caniot ◽  
Stéphane Sanquer ◽  
Didier Delaunay
Keyword(s):  
Urban Area ◽  
Wind Engineering ◽  
Large Urban Area ◽  
Numerical Tools

Experimental and Numerical Analysis of the Fatigue Behaviour of Panels Repaired by Patches in Composite Material

2009 ◽  
Vol 417-418 ◽  
pp. 597-600
Author(s):  
F. Ricci ◽  
F. Franco ◽  
Nicola Montefusco
Keyword(s):  
Experimental Data ◽  
Fatigue Life ◽  
Fatigue Behaviour ◽  
Optimized Design ◽  
Bonded Composite ◽  
Crack Tips ◽  
Numerical Tools ◽  
Aluminum Panels ◽  
State Of Tension ◽  
Good Agreement

In this paper, the mechanisms of propagation of the damage in aluminum panels repaired with bonded composite patches of different mechanical characteristics is analyzed. The aim of this study is to analyze analytically, experimentally and numerically the advantage of the use of bonded composite patches to increase the fatigue life and to reduce the state of tension at the crack tips. The experimental results show that both static strength and fatigue life of the repaired aluminum panel has significantly increased due to the bonded composite patches. The different patches and adhesive, used for cracked panels, have provided about a 100-110% improvement in the fatigue life and a 30-35% decrease in the stress intensity factor. A comparison between finite elements calculations and experimental data has been carried out. The good agreement between the experimental data and the numerical ones has demonstrated the possibility to obtain an optimized design of bonded patches with the numerical tools.

scholarly journals Experimental study of hygrothermal conditions in a wooden room for numerical comparisons

2021 ◽  
Vol 2069 (1) ◽  
pp. 012209
Author(s):  
C Legros ◽  
A Piot ◽  
M Woloszyn ◽  
M Pailha
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Relative Humidity ◽  
Ventilation Rate ◽  
Experimental Setup ◽  
Experimental Measurements ◽  
Materials Properties ◽  
Numerical Comparisons ◽  
Numerical Tools ◽  
Heat And Moisture

Abstract The use of hygroscopic materials indoors has a significant impact on the hygrothermal balance of a room air. It affects both the temperature and the relative humidity. Numerical tools still lack of accuracy in predicting these parameters and some discrepancies are observed between their predictions and experimental measurements. It may be caused by the model itself or by incorrect inputs data (materials properties, occupancy schedule, ventilation rate, etc…) Therefore, an experimental study has been carried out at the room scale under real climate to obtain an experimental dataset as a basis for numerical comparisons. The hygrothermal parameters of the room air have been measured for different loads while all the inputs (heat and moisture generation, air exchange and materials properties) have been properly quantified. This article presents the experimental setup and some of the experimental data obtained.

Comparison of Numerical Models and Verification Against Experimental Data, Using Pelastar TLP Concept

2015 ◽  
Author(s):  
Luca Vita ◽  
G. K. V. Ramachandran ◽  
Antonia Krieger ◽  
Marit I. Kvittem ◽  
Daniel Merino ◽  
...  
Keyword(s):  
Experimental Data ◽  
Numerical Solutions ◽  
Numerical Models ◽  
Complex Problem ◽  
Ocean Basin ◽  
Irregular Waves ◽  
Test Results ◽  
Regular Waves ◽  
Numerical Tools ◽  
Good Agreement

The analysis of a FWT is a complex problem, which requires advanced tools. Several numerical solutions have been used to couple hydrodynamics and aerodynamics and some of the available numerical tools have been compared in code-to-code comparisons. However the code validation for analysis of FWTs is limited by the number of available experimental data. In the present article, DNV GL and Glosten present a code comparison of four numerical tools against model test results. The design used for the analysis is the Pelastar Tension Leg Platform (TLP) by Glosten. A 1/50 downscaled model of the platform and NREL-5 MW wind turbine was tested in MARIN ocean basin. The results from the model tests are used to verify the results from the numerical codes. The FWT is modelled using four different codes: HAWC2 (by DTU and used by DNV GL), BLADED (by DNV GL and used by DNV GL), SIMA (by Marintek and used by DNV GL) and ORCAFLEX (by Orcina and used by Glosten). Although differences exist among these codes, comparable approaches have been used. Results from the numerical codes are compared against the experimental data, in terms of: - Natural periods - Response in regular waves - Response in irregular waves - Response in irregular waves with aerodynamic loads. In general, the results show a good agreement between the different numerical models and all the codes are capable to reproduce the main dynamics of the system. Some deviations were found and should be solved, in order to use these models for a detailed analysis. However these differences do not seem to be due to limitations of the codes and they might be solvable with a more accurate model of the system.

scholarly journals Prediction of Satellite Shadowing in Smart Cities with Application to IoT

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 475 ◽  
Author(s):  
Susana Hornillo-Mellado ◽  
Rubén Martín-Clemente ◽  
Vicente Baena-Lecuyer
Keyword(s):  
Experimental Data ◽  
Internet Of Things ◽  
Urban Area ◽  
High Power ◽  
Urban Areas ◽  
Planning Process ◽  
Graphical Method ◽  
Smart Cities ◽  
Network Planning ◽  
Power Losses

The combination of satellite direct reception and terrestrial 5G infrastructure is essential to guarantee coverage in satellite based-Internet of Things, mainly in smart cities where buildings can cause high power losses. In this paper, we propose an accurate and fast graphical method for predicting the satellite coverage in urban areas and SatCom on-the-move scenarios. The aim is to provide information that could be useful in the IoT network planning process, e.g., in the decision of how many terrestrial repeaters are really needed and where they should be placed. Experiments show that the shadowed areas predicted by the method correspond almost perfectly with experimental data measured from an Eutelsat satellite in the urban area of Barcelona.

scholarly journals Post-Test Numerical Analysis of a Helium-Cooled Breeding Blanket First Wall under LOFA Conditions with the MELCOR Fusion Code

2021 ◽  
Vol 12 (1) ◽  
pp. 187
Author(s):  
Michela Angelucci ◽  
Bruno Gonfiotti ◽  
Bradut-Eugen Ghidersa ◽  
Xue Zhou Jin ◽  
Mihaela Ionescu-Bujor ◽  
...  
Keyword(s):  
Experimental Data ◽  
Numerical Analysis ◽  
Fusion Reactor ◽  
Numerical Analyses ◽  
Main Concern ◽  
First Wall ◽  
Pebble Bed ◽  
Experimental Campaign ◽  
Post Test ◽  
Numerical Tools

The validation of numerical tools employed in the analysis of incidental transients in a fusion reactor is a topic of main concern. KIT is taking part in this task providing both experimental data and by performing numerical analysis in support of the main codes used for the safety analyses of the Helium Cooled Pebble Bed (HCPB) blanket concept. In recent years, an experimental campaign has been performed in the KIT-HELOKA facility to investigate the behavior of a First Wall Mock-Up (FWMU) under Loss Of Flow Accident (LOFA) conditions. The aim of the experimental campaign was twofold: to check the expected DEMO thermal-hydraulics conditions during normal and off-normal conditions and to provide robust data for code validation. The present work is part of these validation efforts, and it deals with the analysis of the LOFA experimental campaign with the system code MELCOR 1.8.6 for fusion. A best-estimate methodology has been used in support of this analysis to ease the distinction between user’s assumptions and code limitations. The numerical analyses are here described together with their goals, achievements, and lesson learnt.

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