Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Claus Lahiri"'
A Hybrid, Runtime Coupled Incompressible CFD-CAA Method for Analysis of Thermoacoustic Instabilities
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
Thermoacoustic instabilities in gas turbine engines are of increasing interest for design of future low-emission technology combustors. Numerical methods used to predict thermo-acoustic instabilities often employ either fully compressible resource-in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::781105e1b1fc78a46f365ba1d959c0a9
https://doi.org/10.1115/1.4055666
https://doi.org/10.1115/1.4055666
Publikováno v:
Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions.
During development of modern lean burn aero engine combustors, prediction and characterization of injector thermoacoustic response plays an important role. The SCARLET (SCaled Acoustic Rig for Low Emission Technologies) test rig fulfills this need by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf38b9055facf64f3628878b8ccbeeb4
https://doi.org/10.1115/gt2022-82901
https://doi.org/10.1115/gt2022-82901
Autor:
Nicholas C. W. Treleaven, André Fischer, Andrew Garmory, Max Staufer, Claus Lahiri, Gary J. Page
Publikováno v:
Volume 3B: Combustion, Fuels, and Emissions.
The flame transfer function (FTF) of an industrial lean-burn fuel injector has been computed using large eddy simulation (LES) and compared to experimental measurements using the multi-microphone technique and OH* measurements. The flame transfer fun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::328ab31147abe6408a8b5103cdaac1dd
https://doi.org/10.1115/gt2021-59553
https://doi.org/10.1115/gt2021-59553
Autor:
André Fischer, Claus Lahiri
Publikováno v:
Volume 3B: Combustion, Fuels, and Emissions.
Many modern low emission combustion systems suffer from thermoacoustic instabilities, which may lead to customer irritation (noise) or engine damages. The prediction of the frequency response of the flame is oftentimes not straightforward, so that it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c00d480f5b9b1922ba6db98fe6091237
https://doi.org/10.1115/gt2021-59561
https://doi.org/10.1115/gt2021-59561
Autor:
Claus Lahiri, Friedrich Bake
Publikováno v:
Journal of Sound and Vibration. 400:564-605
The optimized design of bias flow liner is a key element for the development of low emission combustion systems in modern gas turbines and aero-engines. The research of bias flow liners has a fairly long history concerning both the parameter dependen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70ebb694a46baa1eda3d6c744e9e0f3b
https://doi.org/10.1016/j.jsv.2017.04.005
https://doi.org/10.1016/j.jsv.2017.04.005
Autor:
Antonio Scofano, Lars Enghardt, Christophe Richter, Claus Lahiri, Ingo Roehle, Piergiorgio Ferrante, Stefan Busse-Gerstengarbe, Frank Thiele
Publikováno v:
AIAA Journal. 50:867-879
This paper presents the results of insertion loss measurements and numerical impedance eduction of three different liner samples. An overview of the test rig and methodology is given, and preprocessed results in terms of reflection and transmission c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c19b37339039ac6481aaeae954543ce
https://doi.org/10.2514/1.j051232
https://doi.org/10.2514/1.j051232
Publikováno v:
Scopus-Elsevier
At ambient conditions the acoustic losses within the fluid are two orders of magnitude smaller than those occurring at a duct wall, so that they are commonly neglected in duct acoustics. Recent measurements revealed an increasing sound attenuation at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f953cf906cc3ebabebad5920e46b1a6
https://elib.dlr.de/83191/
https://elib.dlr.de/83191/
Autor:
Friedrich Bake, Stefan Busse-Gerstengarbe, Hans Bodén, Lars Enghardt, Claus Lahiri, Tamer Elnady, Lin Zhou
Publikováno v:
Scopus-Elsevier
This thesis is motivated by the need for noise control in aircraft engine with orifices and perforated liner. The presence of high-level acoustic excitation, different flow situations either bias flow, grazing flow or any combination in the aircraft
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f1c43a8084dd7aff733518ebcfbc2e5
https://elib.dlr.de/89645/
https://elib.dlr.de/89645/
Publikováno v:
Web of Science
Thermo-acoustic instabilities in gas turbine combustors can prevent the implementation of modern combustion concepts, which are essential for higher efficiency and lower emissions. Perforated combustor liners, especially in combination with a bias fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45ce1e978f24749e6dd912c7f988b385
https://elib.dlr.de/82825/
https://elib.dlr.de/82825/