Detail publikace

EXPERIMENTÁLNÍ STUDIE NĚKTERÝCH ASPEKTŮ SPREJŮ TYPU „EFFERVESCENT“

JEDELSKÝ, J.

Originální název

Some Aspects of Effervescent Atomization: Experimental Study

Český název

EXPERIMENTÁLNÍ STUDIE NĚKTERÝCH ASPEKTŮ SPREJŮ TYPU „EFFERVESCENT“

Anglický název

Some Aspects of Effervescent Atomization: Experimental Study

Typ

habilitační práce

Jazyk

en

Originální abstrakt

The present work is focused on experimental study of a single-hole, plain-orifice effervescent atomizer with an outside-in gas injection configuration for combustion applications. Introductory chapter outlines main features of the effervescent atomization. Next chapter deals with two-phase flow inside the atomizer. Qualitative description of fluid mixing, internal two-phase transport and discharge of the mixture is based on published maps, analytical two-phase flow models are used for predictions of discharge of the gas-liquid mixture and compared with experimental data. Phenomenological explanation of liquid break-up and spray-gas interaction is followed with experimental description of the spray structure using Particle Image Velocimetry-Planar Laser-Induced Fluorescence technique; spatially and temporally resolved distributions of the liquid within the spray and spray cone angles are studied with respect to operation conditions of the atomizer. Spatial variation of droplet characteristics, such size and velocity distributions, are probed by means of Phase-Doppler Anemometry. Energy considerations in effervescent atomization are followed with an estimation of atomization efficiency. The last chapter describes several applications of the effervescent atomizer for waste fuel and suspension spraying.

Český abstrakt

Předložená práce systematicky shrnuje poznatky získané při experimentálním výzkumu atomizace typu effervescent. Věnuje se těmto aspektům: vnitřní dvoufázové proudění, vlastnosti spreje (velikost a rychlost kapek, hmotnostní toky ve spreji atd.), atomizační účinnost, nestability, atomizace suspenzí, návrhy trysek pro různé aplikace atd.

Anglický abstrakt

The present work is focused on experimental study of a single-hole, plain-orifice effervescent atomizer with an outside-in gas injection configuration for combustion applications. Introductory chapter outlines main features of the effervescent atomization. Next chapter deals with two-phase flow inside the atomizer. Qualitative description of fluid mixing, internal two-phase transport and discharge of the mixture is based on published maps, analytical two-phase flow models are used for predictions of discharge of the gas-liquid mixture and compared with experimental data. Phenomenological explanation of liquid break-up and spray-gas interaction is followed with experimental description of the spray structure using Particle Image Velocimetry-Planar Laser-Induced Fluorescence technique; spatially and temporally resolved distributions of the liquid within the spray and spray cone angles are studied with respect to operation conditions of the atomizer. Spatial variation of droplet characteristics, such size and velocity distributions, are probed by means of Phase-Doppler Anemometry. Energy considerations in effervescent atomization are followed with an estimation of atomization efficiency. The last chapter describes several applications of the effervescent atomizer for waste fuel and suspension spraying.

Klíčová slova

dvoufázové proudění, effervescent atomizace, vlastnosti spreje, suspenze, směs kapalina–plyn, atomizační účinnost

Vydáno

29.03.2013

Nakladatel

VUT Brno

Místo

Brno

Strany od

1

Strany do

92

Strany počet

92

BibTex


@misc{BUT104350,
  author="Jan {Jedelský}",
  title="Some Aspects of Effervescent Atomization: Experimental Study",
  annote="The present work is focused on experimental study of a single-hole, plain-orifice effervescent atomizer with an outside-in gas injection configuration for combustion applications. Introductory chapter outlines main features of the effervescent atomization. Next chapter deals with two-phase flow inside the atomizer. Qualitative description of fluid mixing, internal two-phase transport and discharge of the mixture is based on published maps, analytical two-phase flow models are used for predictions of discharge of the gas-liquid mixture and compared with experimental data. Phenomenological explanation of liquid break-up and spray-gas interaction is followed with experimental description of the spray structure using Particle Image Velocimetry-Planar Laser-Induced Fluorescence technique; spatially and temporally resolved distributions of the liquid within the spray and spray cone angles are studied with respect to operation conditions of the atomizer. Spatial variation of droplet characteristics, such size and velocity distributions, are probed by means of Phase-Doppler Anemometry. Energy considerations in effervescent atomization are followed with an estimation of atomization efficiency. The last chapter describes several applications of the effervescent atomizer for waste fuel and suspension spraying.",
  address="VUT Brno",
  chapter="104350",
  institution="VUT Brno",
  year="2013",
  month="march",
  pages="1--92",
  publisher="VUT Brno",
  type="habilitation thesis"
}