Research Papers: Gas Turbines: Industrial & Cogeneration

On the Behavior of Water Droplets When Moving Onto Blade Surface in a Wet Compression Transonic Compressor

[+] Author and Article Information
Lanxin Sun

 Harbin Engineering University, Harbin 150001, Chinasunlanxin@yahoo.com.cn

Qun Zheng

 Harbin Engineering University, Harbin 150001, Chinazhengqun@hrbeu.edu.cn

Mingcong Luo, Yijin Li

 Harbin Engineering University, Harbin 150001, China

Rakesh Bhargava

 Foster Wheeler USA Corporation, 585 N. Dairy Ashford, Houston, TX 77079Rakesh_Bhargava@fwhou.fwc.com

J. Eng. Gas Turbines Power 133(8), 082001 (Apr 07, 2011) (10 pages) doi:10.1115/1.4002822 History: Received June 23, 2010; Revised July 08, 2010; Published April 07, 2011; Online April 07, 2011

The process of wet compression in an axial compressor is an intricate two-phase flow involving not only heat and mass transfer processes but also droplet breakup and even formation of discontinuous water film on the blade surface and then breaking into droplets. In this paper, the droplet-wall interactions are analyzed using the theory of spray wall impingement through two computational models for an isolated transonic compressor rotor (NASA rotor 37). Model 1, representing spread phenomenon, assumes that all droplets impacting on the blade are trapped in the water film and subsequently released from its trailing edge and enter the wake region with an equivalent mass flow but bigger in diameter and smaller in number. Whereas, the model 2, representing splashing phenomenon, assumes that upon impacting on the blade, the droplets will breakup into many smaller ones. The three-dimensional flow simulation results of these two models are analyzed and compared in this paper.

Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Computational grids for NASA rotor 37

Grahic Jump Location
Figure 2

Comparison of simulated results for various turbulence models with the experimental data

Grahic Jump Location
Figure 3

Particle size distribution (γ=2.0,de=10 μm)

Grahic Jump Location
Figure 4

Slip velocity needed to obtain We=1

Grahic Jump Location
Figure 5

Schematic of droplet-wall interaction

Grahic Jump Location
Figure 6

Schematic of droplet-wall interaction

Grahic Jump Location
Figure 7

Schematic of forces on a film cell

Grahic Jump Location
Figure 8

Spanwise distribution of film mass fraction from deposited droplets

Grahic Jump Location
Figure 9

Water droplets motion trajectories with big droplets from shed water film (spread) (Inlet injection: RR size 10 μm; water flowrate 5.6 g/s (1%))

Grahic Jump Location
Figure 10

Water droplets motion trajectories with droplet breakup due to impacting onto blade (splash) (inlet injection: RR size 10 μm; water flowrate 5.6 g/s (1%))

Grahic Jump Location
Figure 11

Cold regions in computational domain

Grahic Jump Location
Figure 12

Mach number contours on B2B surface of span 50% (black bold curve: 1 Ma)

Grahic Jump Location
Figure 13

Temperature contours on B2B surface of span 50% (black bold curve: 302.6 K)

Grahic Jump Location
Figure 14

Limiting streamlines on rotor blade suction surfaces



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In