Paper Title:
Steady Air Injection Flow Control in Centrifugal Compressor
  Abstract

In the present work steady air injection upstream of the leading edge was used in a centrifugal compressor, Whose preliminary design of compressor injection systems can be modeled by a geometrical relationship between user-specified yaw angle and resulting blade incidence angle based on simple velocity triangles, the error between the best yaw angle obtained from this relationship and that obtained from numerical simulation is less than 3%. To reveal the mechanism, steady numerical simulations were performed on high pressure ratio centrifugal compressor rotor operated with a rotor tip speed of 586 m/s. Parametric studies of the injection yaw angle was performed to determine the configuration that provide the best steady results for the compression systems studied in this work. The injectors were placed at short distance (ten percent of the inlet tip radius upstream of the compressor face) the objective of this was to achieve maximum control over the leading edge flow by varying individual injection parameters. The injection angle, α, was fifteen while the yaw angle, β, was parametrically varied. The results show that at design speed (n= 50 000 r/min) with injection flow rate equal to 3% of the main flow rate and 25 degree air injection yaw angle can lower the mass flow rate at stall for approximately 7.5%.

  Info
Periodical
Chapter
Chapter 1: Applied Mechanics Mechanical Engineering
Edited by
Honghua Tan
Pages
471-477
DOI
10.4028/www.scientific.net/AMM.138-139.471
Citation
I. Benhegouga, C. Yang, "Steady Air Injection Flow Control in Centrifugal Compressor", Applied Mechanics and Materials, Vols. 138-139, pp. 471-477, 2012
Online since
November 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yu Liang Lu, Yun Feng Zhao, Bo Liang
Chapter 2: Flow Machinery and Engineering
Abstract:Centrifugal compressor in bootstrap turbine cooler was studied to build computational model of flow domain for compressor component. The...
133
Authors: S. Seralathan, D.G. Roy Chowdhury
Chapter 5: Research and Design of Industrial Equipments and Machines
Abstract:Innovative methods in the design of radial diffuser are necessary for reducing the energy losses associated with diffusion in order to design...
1063
Authors: Valeriu Drăgan, Bogdan Gherman, Ion Mălăel, Razvan Bimbasa
Chapter 3: Designing, Modeling and Optimization of Manufacturing Machines and Mechanisms
Abstract:In this paper a case study of a trans-sonic centrifugal compressor at various tip gap values is presented. At all clearance values, global...
128