Unsteady effects at the interface between impeller-vaned diffuser in a low pressure centrifugal compressor
Journal Title: INCAS BULLETIN - Year 2013, Vol 5, Issue 1
Abstract
In this paper, Proper Orthogonal Decomposition (POD) is applied to the analysis of the unsteady rotor-stator interaction in a low-pressure centrifugal compressor. Numerical simulations are carried out through finite volumes method using the Unsteady Reynolds-Averaged Navier-Stokes Equations (URANS) model. Proper Orthogonal Decomposition allows an accurate reconstruction of flow field using only a small number of modes; therefore, this method is one of the best tools for data storage. The POD results and the data obtained by the Adamczyk decomposition are compared. Both decompositions show the behavior of unsteady rotor-stator interaction, but the POD modes allow quantifying better the numerical errors.
Authors and Affiliations
Sterian DANAILA, Mihai Leonida NICULESCU
Keywords
Related Articles
- EP ID EP87299
- DOI 10.13111/2066-8201.2013.5.1.8
- Views 151
- Downloads 0
A NUMERICAL MODEL OF THE LASER LIGHT INTENSITY TRANSVERSAL DISTRIBUTION INTO UNDEFORMED/DEFORMED OPTICAL FIBERS
Preliminary results obtained in developing a numerical model of laser light intensity transverse distribution into undeformed/deformed step index optical fiber are presented. The main purpose of the presented preliminar...
Drag coefficient modelling in the context of small launcher optimisation
The purpose of this paper is to present a fast mathematical model that can be used to quickly asses the drag coefficient for generic launcher configurations. The tool developed based on this mathematical model can be use...
Present and future of aircraft carriers as a floating diplomatic and military means of deterrence
The aircraft carrier is the most capable offshore military warship the mankind has ever build and is considered as a symbol of the absolute navy and national strenght. Construction of an aircraft carrier is having a grea...
Responsibility of the Russian Federation for Shooting Down a Malaysian Passenger Aircraft on 17th July 2014
On 17 July 2014, Malaysia Airlines Flight MH17 from Amsterdam to Kuala Lumpur was shot down over Eastern Ukraine. On board Boeing 777 there were 283 passengers and 15 crew members who all lost their lives. The victims’ f...
The Use of Satellite Technologies for Maritime Surveillance: An Overview of EU Initiatives
The sea lies at the heart of the EU prosperity and security: the Union and its member states depend on open and secure seas and oceans for their trade, transportation, energy, food, mineral resources, tourism, and a heal...