Opendata, web and dolomites

ROSSINI SIGNED

Radial cOmpresSor Surge INception Investigation

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 ROSSINI project word cloud

Explore the words cloud of the ROSSINI project. It provides you a very rough idea of what is the project "ROSSINI" about.

vaneless    devoted    separation    experimentally    restricted    forth    outside    investigations    configuration    compressor    excited    first    validation    inception    damped    orbit    nonetheless    self    reported    kulite    academic    ideally    sufficiently    relies    safe    array    behavior    limited    impeller    centrifugal    stage    oscillations    rotor    premature    reference    theoretical    put    sub    prerequisite    surge    modeling    rotational    mostly    diffuser    scenario    industrial    margins    predicting    ultimate    phenomena    entire    elastic    stall    effort    numerically    localized    aero    computational    speeds    predict    physical    hazardous    nowadays    experimental    effect    aging    onset    loads    unsteady    diffusers    flow    data    fatigue    start    off    models    resolved    pressure    frequently    instabilities    induce    piv    underlying    stages    itself    harmonic    time    statement    operated    physics    quality    cells    rotating   

Project "ROSSINI" data sheet

The following table provides information about the project.

Coordinator
DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV 

Organization address
address: Linder Hoehe
city: KOELN
postcode: 51147
website: www.dlr.de

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website https://www.dlr.de/at/rossini
 Total cost 1˙102˙458 €
 EC max contribution 1˙102˙458 € (100%)
 Programme 1. H2020-EU.3.4.5.6. (ITD Systems)
 Code Call H2020-CS2-CFP02-2015-01
 Funding Scheme CS2-IA
 Starting year 2016
 Duration (year-month-day) from 2016-10-01   to  2021-03-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV DE (KOELN) coordinator 747˙375.00
2    STICHTING NATIONAAL LUCHT- EN RUIMTEVAARTLABORATORIUM NL (AMSTERDAM) participant 355˙083.00

Map

 Project objective

Centrifugal compressor stages using vaneless diffusers are known to have a wide operating range. However, when operated outside of this range, instabilities have been reported to commonly develop in the impeller (rotor) or diffuser or both. The unsteady flow phenomena are believed to start from a localized flow separation (stall) that frequently will orbit within the stage at sub-harmonic rotational speeds (rotating stall). If not damped sufficiently the stall cells will eventually develop into more hazardous self-excited pressure oscillations within the entire compressor stage leading to surge phenomena that can induce high aero-elastic loads on the rotor itself leading to premature aging (fatigue) or ultimate failure of the stage. Predicting of the onset of the instabilities is a prerequisite to maintain compressor operating within safe operating margins. Nonetheless the physical understanding and associated modeling of the stall and surge inception is rather limited and mostly restricted to cause-and-effect investigations. With improved computational models being available nowadays more in-depth investigations of the underlying flow physics have become possible, but relies on high quality experimental data for validation. Following the statement of work put forth in the call for proposal, the first objective of the proposed project is to determine a surge inception scenario for a given academic as well as industrial reference case of centrifugal compressor using vaneless diffuser. Within the proposed project the off-design behavior of each compressor configuration will be investigated both numerically and experimentally, involving time-resolved Kulite array and PIV measurements. Based on this data and on existing theoretical analysis procedures, the second major effort of the present study is devoted to define low-order methodologies that ideally predict the onset of instabilities.

 Publications

year authors and title journal last update
List of publications.
2017 Jonas ROSEMEIER
Numerische Analyse eines Radialverdichters mit Spiralgehäuse und unbeschaufeltem Diffusor
published pages: all, ISSN: , DOI:
Master Thesis (DLR-IB-AT-KP-2017-71) 2020-02-27
2017 Jonas ROSEMEIER
Numerical Analysis of a Centrifugal Compressor Including a Vaneless Diffuser and a Volute
published pages: , ISSN: , DOI:
ODAS 2017 17th ONERA-DLR Aerospace Sympos 2020-02-27

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