Publication detail

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

JAKUBÍK, T. LAWES, M. WOOLLEY, R. JÍCHA, M.

Original Title

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

English Title

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

Type

journal article in Web of Science

Language

en

Original Abstract

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.

English abstract

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.

Keywords

diesel spray, turbulence, droplet clustering, cfd, droplet-turbulence interaction

RIV year

2006

Released

01.11.2006

Publisher

Begell House

Location

50 Cross highway, Redding, CT 06896

Pages from

687

Pages to

703

Pages count

17

BibTex


@article{BUT43502,
  author="Tomáš {Jakubík} and Malcolm {Lawes} and Robert {woolley} and Miroslav {Jícha}",
  title="STUDY OF AMBIENT TURBULENCE EFFECTS ON DIESEL SPRAYS IN A FAN-STIRRED VESSEL",
  annote="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.",
  address="Begell House",
  chapter="43502",
  institution="Begell House",
  journal="Atomization and sprays",
  number="6",
  volume="16",
  year="2006",
  month="november",
  pages="687--703",
  publisher="Begell House",
  type="journal article in Web of Science"
}