Numerical Analysis of Rainfall-Induced Landslides. The Case of Camaldoli Hill, Naples: Test Case Nr.1 - October, 2004; Test Case Nr.2 - September, 2005

2009 ◽  
Author(s):  
Picarelli Luciano ◽  
Vinale Filippo
Keyword(s):  
Numerical Analysis ◽  
Test Case

Fire Suppression by Water-Mist Sprays: Experimental and Numerical Analysis

2010 ◽  
Author(s):  
Paolo E. Santangelo ◽  
Paolo Tartarini ◽  
Beatrice Pulvirenti ◽  
Paolo Valdiserri ◽  
Andre´ W. Marshall
Keyword(s):  
Numerical Analysis ◽  
Fire Suppression ◽  
Test Chamber ◽  
Water Mist ◽  
Specific Reference ◽  
Test Case ◽  
Fire Dynamics ◽  
Suppression Mechanism ◽  
Thermal Transient ◽  
Combustion Tests

Water-mist systems have become a promising technology in the fire-fighting field over the last twenty years. The present work is aimed at employing the available knowledge on water-mist sprays in an experimental and numerical analysis of the suppression mechanism. Therefore, a water-mist system has been operated within a typical fire case. Most notably, this latter is constituted by a heptane pool fire: experiments have been carried out inside a test chamber, where a set of thermocouples has conveniently been placed to evaluate the thermal transient at different locations of interest. Some free-combustion tests have been run as a benchmark to validate combustion models. Then, a typical water-mist nozzle has been inserted and activated to realize control, suppression and potential extinction of the generated fire. The recognized FDS (Fire Dynamics Simulator) and Fluent® codes have been challenged in reproducing the test case: thermal transient and suppression time have been considered as parameters for validation. Therefore, the water-mist spray has been modeled and the already mentioned results about its characterization have been implemented as initial or boundary conditions. Moreover, the fire scenario has been modeled as well. A good agreement between experimental and numerical results has been obtained, even under some approximations, with specific reference to combustion mechanisms.

Thermal Analysis of Stacked Ni-MH Battery

1999 ◽  
Author(s):  
Katsumi Hisano ◽  
Hideo Iwasaki ◽  
Masaru Ishizuka ◽  
Tetsuya Yamane
Keyword(s):  
Thermal Analysis ◽  
Numerical Analysis ◽  
Temperature Rise ◽  
Test Case ◽  
Charge Retention ◽  
Calculated Temperature ◽  
Computational Load ◽  
Three Stages ◽  
Mh Battery ◽  
Good Agreement

Abstract Numerical analysis was carried out to evaluate the temperature rise and charge retention of Ni-MH batteries as pallet loads. In this paper, thermal analysis of pallet loads which contain 2400 mAh Ni-MH batteries is considered as a test case. To reduce computational load, thermal analysis was performed in three stages. Measured and calculated temperature rise of the load showed good agreement, and it can be observed that there exists an appropriate charge retention of the battery to sustain high retention during transportation.

scholarly journals The influence of distance between vehicles in platoon on aerodynamic parameters

2018 ◽  
Vol 180 ◽  
pp. 02030
Author(s):  
Renata Gnatowska ◽  
Marcin Sosnowski
Keyword(s):  
Numerical Analysis ◽  
Wind Tunnel ◽  
Velocity Fields ◽  
Simplified Model ◽  
Test Case ◽  
Safety Issues ◽  
Traffic Conditions ◽  
Optimal Distance ◽  
Aerodynamic Parameters ◽  
Numerical Research

The paper presents the results of experimental and numerical research focused on the reduction of fuel consumption of vehicles driving one after another in a so-called platoon arrangement. The aerodynamic parameters and safety issues were analyzed in order to determine the optimal distance between the vehicles in traffic conditions. The experimental research delivered the results concerning the drag and was performed for simplified model of two vehicles positioned in wind tunnel equipped with aerodynamic balance. The additional numerical analysis allowed investigating the pressure and velocity fields as well as other aerodynamics parameters of the test case.

Impeller-Diffuser Interaction in Centrifugal Compressors: Numerical Analysis of Radiver Test Case

2007 ◽  
Vol 23 (6) ◽  
pp. 1304-1312 ◽  
Author(s):  
P. Boncinelli ◽  
M. Ermini ◽  
S. Bartolacci ◽  
A. Arnone
Keyword(s):  
Numerical Analysis ◽  
Test Case ◽  
Centrifugal Compressors
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