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Context. Fast and accurate positioning of Inlet Guide Vane (IGV) is critical for flow regulation in centrifugal air compressors, especially for surge avoidance control. . Besides the theoretical work on the compression system surge, a lot of experimental work and computational fluid dynamics (CFD) modeling had also been
2015 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the Omsk State Technical University. Keywords: inlet guide vanes; blade system; centrifugal compressor; the loss factor; the attack angle. 1. Introduction. In solving the problems of obtaining theoretical gas-dynamic characteristics (GDC) of the
Compressed Air Best Practices® (CABP) Magazine recently caught up with Rick Stasyshan, the Compressed Air and Gas Institute's (CAGI) Technical Consultant, and John Kassin of Cameron to discuss variable inlet guide vanes (IGV). The following interview describes how centrifugal compressor efficiency can be
28 Jul 2011
28 Feb 2014 Introduction. Inlet Guide Vanes (IGVs) are used to deliver a defined preswirl for the following rotor and can be used to adjust the stage's aerodynamic performance. Using Variable Inlet Guide Vanes. (VIGVs) the preswirl can be varied in a wide range in order to control the compressor's operating point.
24 Feb 2014 Introduction. In industrial centrifugal compressors, the prewhirl regulation by inlet guide vanes (IGVs) is a widely With installing IGVs at the centrifugal pump inlet, an inevitable pressure loss is induced . In this model, a transport equation with source terms based on the homogeneous flow theory is used.
The control system regulates airflow with an inlet throttle valve or guide vanes. The throttled surge point limits the amount of reduction in flow rate at a given pressure. Centrifugal air compressors provide lubricant-free air. Lubrication used for speed-increasing gears and high-speed shaft bearings is kept away from the
RESULTS AND DISCUSSION. The main variables for each of the two compressor configurations were rotor speed, pressure ratio, and inlet-guide-vane angle. In addition, the thickness and the axial loca tion of the inlet guide vanes were varied on the three-stage transonic configuration. The single-stage subsonic
28 Jul 2017
Discussion Is printed only if the paper Is published in an ASME Journal. Authorization to Variable inlet guide vanes (VIGVs) have been developed for a of compressor. A weak fluid oscillation, which usually occurs in the region of high pressure-ratio and high mass flow rates, has been controlled by using VIGVs.

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February 2018