Study on Behavior of Breakup and Radial Migration of Droplets in a 5-stage Compressor

DOI

10.2991/ipemec-15.2015.120How to use a DOI?

Keywords

Wet compression; Two-phase flow; Droplet breakup; radial migration of droplet; multistage compressor.

Abstract

As an economical and effective means, water injection technology is currently used to improve the gas turbine power and efficiency. Due to the relatively long residence time of water droplets in the multistage compressor, the droplets may have a large amount of migration along the radial direction in the strong centrifugal force while they will also encounter considerable breakup because of aerodynamic shear stress and impacting onto blade surface. Numerical simulation was carried out to study motion and breakup of water droplets via Eulerian-Lagrangian multiphase flow model through a 5-stage subsonic axial compressor. Simulation results show that only very small droplets can follow the gas flow well. Droplets above 30 microns in diameter will eventually become smaller because of continuously impacting and breakup. It shows also that for large droplets radial migrations along the flow direction increase obviously.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Lanxin Sun
AU  - Tao Sun
AU  - Yigang Luan
PY  - 2015/05
DA  - 2015/05
TI  - Study on Behavior of Breakup and Radial Migration of Droplets in a 5-stage Compressor
BT  - Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference
PB  - Atlantis Press
SP  - 649
EP  - 654
SN  - 2352-5401
UR  - https://doi.org/10.2991/ipemec-15.2015.120
DO  - 10.2991/ipemec-15.2015.120
ID  - Sun2015/05
ER  -