Small Jet Engine Centrifugal Compressor Stability Margin Assessment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F17%3A00533843" target="_blank" >RIV/60162694:G43__/17:00533843 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/GT2017-64444" target="_blank" >http://dx.doi.org/10.1115/GT2017-64444</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/GT2017-64444" target="_blank" >10.1115/GT2017-64444</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Small Jet Engine Centrifugal Compressor Stability Margin Assessment

Popis výsledku v původním jazyce

Centrifugal compressors with low and moderate pressure ratio usually have characteristic with a wider stable operating region. Flat speed lines allow substantial reduction of the air mass flow rate with almost constant pressure ratio and without sudden surge occurrence. The surge is typically preceded by a stall or mild surge causing significant and thus quite easily detectable pressure oscillations. The preceding unstable operation is oscillatory yet still quite safe compared to deep surge. Research described in this paper deals with changes in both the engine slow pressures and fast parameters (pressures, noise, vibrations). Parameters were measured along constant speed lines from the operating line point down near to the compressor surge line. The goal was to describe typical changes in engine parameters and to define a stipulated limit of engine safe operation. Newly defined criteria of centrifugal compressor stable run will allow evaluation of engine operability, without the need to drive the engine into the compressor surge repeatedly.

Název v anglickém jazyce

Small Jet Engine Centrifugal Compressor Stability Margin Assessment

Popis výsledku anglicky

Centrifugal compressors with low and moderate pressure ratio usually have characteristic with a wider stable operating region. Flat speed lines allow substantial reduction of the air mass flow rate with almost constant pressure ratio and without sudden surge occurrence. The surge is typically preceded by a stall or mild surge causing significant and thus quite easily detectable pressure oscillations. The preceding unstable operation is oscillatory yet still quite safe compared to deep surge. Research described in this paper deals with changes in both the engine slow pressures and fast parameters (pressures, noise, vibrations). Parameters were measured along constant speed lines from the operating line point down near to the compressor surge line. The goal was to describe typical changes in engine parameters and to define a stipulated limit of engine safe operation. Newly defined criteria of centrifugal compressor stable run will allow evaluation of engine operability, without the need to drive the engine into the compressor surge repeatedly.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of ASME Turbo Expo 2017

ISBN

978-0-7918-5081-7

ISSN

—

e-ISSN

—

Počet stran výsledku

8

Strana od-do

—

Název nakladatele

ASME

Místo vydání

Charlotte, North Carolina, USA

Místo konání akce

Charlotte

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000412716100024