Calleja Lapeña, Fernando(Universitat Politècnica de València, 2015-03-04)
[ES] El riego de espacios verdes supone consumos de agua muy importantes dentro de las dotaciones urbanas, donde es preciso ajustar los volúmenes aportados.
Los emisores de riego a presión usados pueden ser goteros, ...
Salvador, Francisco Javier; Gimeno, Jaime; De La Morena, Joaquín; González-Montero, Lucas Antonio(Elsevier, 2021-05-15)
[EN] Primary atomization and initial spray development are critical in the operation of high-pressure liquid sprays such as the ones used in internal combustion engines. In the current paper, an analysis of the effect of ...
Payri, Raul; Salvador, F.J.; Gimeno, Jaime; Viera-Sotillo, Juan Pablo(Frontiers Media SA, 2015)
[EN] Understanding and controlling mixing and combustion processes is fundamental in
order to face the challenges set by the ever more demanding pollutant regulations
and fuel consumption standards of direct injection ...
Macian Martinez, Vicente; Payri, Raul; García Martínez, Antonio; Bardi ., Michele(Society for Experimental Mechanics, 2011)
[EN] In this article, two of the most used methods for diesel spray macroscopic characterization are presented; the first one is the likelihood ratio test method (LRT) and the second one is the Otsu's thresholding method ...
[EN] This paper deals with the influence of flow regime (laminar, transition or turbulent) on the internal flow behavior, and how it affects the spray development in diesel nozzles. In particular, the research described ...
Njere, Darlington; Emekwuru, Nwabueze(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] The evolution of diesel fuel injection technology, to facilitate strong correlations of in-cylinder spray propagation
with injection conditions and injector geometry, is crucial in facing emission challenges. More ...
Payri, Raul; De La Morena, Joaquín; Monsalve-Serrano, Javier; Pesce, Francesco Concetto; Vassallo, Alberto(SAGE Publications, 2019-01)
[EN] This article describes the main results of an investigation about counter-bore injector nozzle impact on the combustion process in a modern Euro 6 diesel engine. First, hydraulic and spray visualization tests have ...
Yokev, Neta; Greenberg, J.B.(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] A model is presented for a one-dimensional laminar premixed flame, propagating into a rich, off-stoichiometric,
fresh homogenous mixture of water-in-fuel emulsion spray, with air and inert gas. The main purpose is ...
Tosal Lázaro, Raquel(Universitat Politècnica de València, 2016-12-20)
[EN]
This thesis aims of study painting with spray or aerosol like artistic way. It has tried to show how this material, from industrial and decorative painting, has established itself as pictorial technique in the art ...
[EN] A weak coupling strategy is proposed to simulate the pressurised spray without any empirical readjustment. Volume
Of Fluid is used to simulate the nozzle internal flow with cavitation and its primary atomization into ...
Kapusta, Łukasz(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] Recent trends in SCR (Selective Catalytic Reduction) systems development increase requirements for UWS (Urea
Water Solution) injection. Close-coupled SCR system designs decrease the distance available for water
evaporation ...
[EN] The efficiency of combustion process in diesel engine depends on the spray characteristics. The most important
of them are droplet size and velocity distributions. There are four methods which are used for describing ...
González Montero, Lucas Antonio(Universitat Politècnica de València, 2017-10-03)
El objetivo del presente Trabajo de Fin de Máster es el estudio de la primera etapa de atomización de un chorro diésel mediante técnicas computacionales. Un análisis en profundidad de este proceso permitir´a entender con ...
[EN] Nearly all active fire extinguishing systems consist of injecting an agent into the space set on fire. For aircraft cargo cabins, the agent widely used up to date is Halon 1301. The FAA provides a level of safety for ...
Garrido Sempere, Carolina(Universitat Politècnica de València, 2022-09-14)
[ES] El presente trabajo de carácter práctico está formado por una serie de cuatro murales realizados, dos de ellos titulados Las Claudias y Karol Gym, por encargo a diferentes clientes. La temática varía entre ellos, ...
[EN] Optical techniques are widely employed for their non-intrusive behavior and are applied to two-phase flow
investigations. Until now, the most commonly used technique to determine the droplet size is the Phase ...
[EN] Air-transmitted pathogens have become of particular interest for the general population during the COVID pandemic. Coughing is one of the most important spreading vector for air transmitted pathogens. To prevent and ...
Schmid, Andreas; Yamada, Naoki(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] Large marine two-stroke diesel engines still represent the major propulsion system for merchant shipping. With
steadily increasing transport demands, rising operational costs and stricter environmental legislations, ...
Payri, Raul; Gimeno, Jaime; De La Morena, Joaquín; Battiston, Paul A.; Wadhwa, Arnrita; Straub, Robert(Elsevier, 2016-08-15)
A new prototype common rail injector featuring a complete new nozzle design concept was exhaustively characterized both from the hydraulic and spray formation point of view. A commercial injection rate meter together with ...
Mendoza Álvarez, Víctor Daniel(Universitat Politècnica de València, 2021-10-21)
[ES] Las estrategias de inyección múltiple han aumentado sus capacidades en conjunto con la evolución de las tecnologías de sistemas de inyección hasta el punto de que hoy en día es posible inyectar ocho pulsos diferentes ...