Výzkum vlivu okolní turbulence na sprej naftového motoru ve vířivé komoře

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F06%3APU62856" target="_blank" >RIV/00216305:26210/06:PU62856 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

STUDY OF AMBIENT TURBULENCE EFFECTS ON DIESEL SPRAYS IN A FAN-STIRRED VESSEL

Popis výsledku v původním jazyce

This study investigates the influence of the ambient turbulence on a pressure atomized diesel-like spray in the well characterized and controlled turbulence flow field of a fan-stirred experimental vessel. Injections were performed into nitrogen at 15 bar and 400 K under four turbulent conditions with RMS velocities ranging from 0.5 up to 5.5 m/s. Mie-scatter laser sheet and Schlieren techniques were applied to visualize the liquid and the vapor phase of the spray. With increasing turbulence there was increasing formation of droplet clusters and ligaments which resulted in a reduced detection of droplet vapor along the whole penetration length of the spray. From considerations of the Stokes numbers for the droplet-turbulence interaction, it is concluded that the micro length scales of the ambient turbulence were the probable source of this droplet clustering.

Název v anglickém jazyce

STUDY OF AMBIENT TURBULENCE EFFECTS ON DIESEL SPRAYS IN A FAN-STIRRED VESSEL

Popis výsledku anglicky

This study investigates the influence of the ambient turbulence on a pressure atomized diesel-like spray in the well characterized and controlled turbulence flow field of a fan-stirred experimental vessel. Injections were performed into nitrogen at 15 bar and 400 K under four turbulent conditions with RMS velocities ranging from 0.5 up to 5.5 m/s. Mie-scatter laser sheet and Schlieren techniques were applied to visualize the liquid and the vapor phase of the spray. With increasing turbulence there was increasing formation of droplet clusters and ligaments which resulted in a reduced detection of droplet vapor along the whole penetration length of the spray. From considerations of the Stokes numbers for the droplet-turbulence interaction, it is concluded that the micro length scales of the ambient turbulence were the probable source of this droplet clustering.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Atomization and sprays

ISSN

1044-5110

e-ISSN

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Svazek periodika

16

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

687-703

Kód UT WoS článku

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EID výsledku v databázi Scopus

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