Detail publikačního výsledku

Characteristics and behaviour of multi-hole effervescent atomizers

JEDELSKÝ, J.; JÍCHA, M.; SLÁMA, J.

Originální název

Characteristics and behaviour of multi-hole effervescent atomizers

Anglický název

Characteristics and behaviour of multi-hole effervescent atomizers

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The paper shows results of continuos research of multi-hole effervescent atomizers for industrial burners. The atomizer is powered with light heating oil and uses air as an atomizing medium. Here we focus on several new versions of multi-hole effervescent atomizers developed on the basis of previous research. Detailed description of spray quality is presented. 3-D graphs show spatial distribution of Sauter Mean Diameter and mean velocity. Influence of design and operational conditions on spray quality is analyzed. Size-velocity correlation and size and velocity distribution is described. The results are compared with results of other authors. Two-phase flow inside the atomizers is described by Bakers map for horizontal flow. Our previous results with two-phase flow visualization invoked a possibility of liquid-gas gravitational separation. Results of spray heterogeneity measurements show that differences between fuel flow rate of individual holes can be of the order of tens %. Effervescent atomizer sprays tend to be unsteady under some operating conditions. Spray unsteadiness at lower pressure and GLR were observed and measured.

Anglický abstrakt

The paper shows results of continuos research of multi-hole effervescent atomizers for industrial burners. The atomizer is powered with light heating oil and uses air as an atomizing medium. Here we focus on several new versions of multi-hole effervescent atomizers developed on the basis of previous research. Detailed description of spray quality is presented. 3-D graphs show spatial distribution of Sauter Mean Diameter and mean velocity. Influence of design and operational conditions on spray quality is analyzed. Size-velocity correlation and size and velocity distribution is described. The results are compared with results of other authors. Two-phase flow inside the atomizers is described by Bakers map for horizontal flow. Our previous results with two-phase flow visualization invoked a possibility of liquid-gas gravitational separation. Results of spray heterogeneity measurements show that differences between fuel flow rate of individual holes can be of the order of tens %. Effervescent atomizer sprays tend to be unsteady under some operating conditions. Spray unsteadiness at lower pressure and GLR were observed and measured.

Klíčová slova

drop size, spray, multi-hole effervescent atomizer

Klíčová slova v angličtině

drop size, spray, multi-hole effervescent atomizer

Autoři

JEDELSKÝ, J.; JÍCHA, M.; SLÁMA, J.

Vydáno

01.01.2004

Nakladatel

University of Nottingham

Místo

Nottingham

Kniha

19th ILASS Europe 2004

Strany od

521

Strany počet

6

BibTex

@inproceedings{BUT13014,
  author="Jan {Jedelský} and Miroslav {Jícha} and Jaroslav {Sláma}",
  title="Characteristics and behaviour of multi-hole effervescent atomizers",
  booktitle="19th ILASS Europe 2004",
  year="2004",
  pages="6",
  publisher="University of Nottingham",
  address="Nottingham"
}