Detail publikace

Characteristics and behaviour of multi-hole effervescent atomizers

Originální název

Characteristics and behaviour of multi-hole effervescent atomizers

Anglický název

Characteristics and behaviour of multi-hole effervescent atomizers

Jazyk

en

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.

BibTex


@inproceedings{BUT13014,
  author="Jan {Jedelský} and Miroslav {Jícha} and Jaroslav {Sláma}",
  title="Characteristics and behaviour of multi-hole effervescent atomizers",
  annote="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.",
  address="University of Nottingham",
  booktitle="19th ILASS Europe 2004",
  chapter="13014",
  institution="University of Nottingham",
  year="2004",
  month="january",
  pages="521",
  publisher="University of Nottingham",
  type="conference paper"
}