Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Robert E. Kielb"'
Publikováno v:
Journal of Turbomachinery. 145
A lack of reliable experimental data on transonic blade flutter in real turbomachines hampers the further improvement of computational design predictions for off-design operation regimes of newly-built machines. Acquiring unsteady pressure distributi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e08ff94d4a2e2f68a9479f470cf6f816
https://doi.org/10.1115/1.4062181
https://doi.org/10.1115/1.4062181
Publikováno v:
Journal of Turbomachinery. 145
Boundary-layer ingestion systems have the potential to improve propulsion efficiency using fluid with lower momentum near the airframe. However, they also bring variations in the velocity and total pressure, leading to a complex distortion of the flo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f3aee0361fa5c6bdd7aa257a607ca97
https://doi.org/10.1115/1.4055970
https://doi.org/10.1115/1.4055970
Publikováno v:
Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions.
This paper expands upon a multi-degree-of-freedom, Van der Pol oscillator used to model buffet and Nonsynchronous Vibrations (NSV) in turbines. Two degrees-of-freedom are used, a fluid tracking variable incorporating a Van der Pol oscillator and a cl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5f7430b3d597e2dd08a5f287ab7fa16
https://doi.org/10.1115/gt2021-58965
https://doi.org/10.1115/gt2021-58965
Publikováno v:
Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering.
This paper focuses on the impact of hub labyrinth seal leakage flows on the aeromechanical behavior of an embedded compressor rotor. End wall flows are critical in determining the performance of gas turbine engine compressors, particularly the hub le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81b7df2134bf86bdc20dd0a95921f977
https://doi.org/10.1115/gt2021-58779
https://doi.org/10.1115/gt2021-58779
Publikováno v:
AIAA Scitech 2021 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9358f67980151e303b5d54b777bd02f
https://doi.org/10.2514/6.2021-0265
https://doi.org/10.2514/6.2021-0265
Autor:
Shreyas Hegde, Robert E. Kielb
Publikováno v:
AIAA Scitech 2021 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e95710edc740df23bc88fc7bc3fd439
https://doi.org/10.2514/6.2021-1224
https://doi.org/10.2514/6.2021-1224
Autor:
Robert E. Kielb, Fanny M. Besem
Publikováno v:
Journal of Propulsion and Power. 33:227-233
The flutter CFD calculations conducted in industry generally use a single-row, single-passage approach with a minimum of detailing to reduce the computational time as much as possible. The question arises of what level of detailing is necessary for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75dbe1a8defb64c48ad19181bf72cf8c
https://doi.org/10.2514/1.b36121
https://doi.org/10.2514/1.b36121
Publikováno v:
Journal of Turbomachinery. 141
The aerodynamic interaction of upstream and downstream blade rows can have a significant impact on the forced response of the compressor. Previously, the authors carried out the forced response analysis of a three-row stator-rotor-stator (S1-R2-S2) c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3470f2bda6960f847bae33d3c044017
https://doi.org/10.1115/1.4044212
https://doi.org/10.1115/1.4044212
Publikováno v:
AIAA Scitech 2019 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12bbcf8abae427ccd754327983638904
https://doi.org/10.2514/6.2019-1862
https://doi.org/10.2514/6.2019-1862
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 141
Accuracy when assessing mistuned forced response analyses is still a major concern. Since a fully coupled analysis is still very computational expensive, several simplifications and reduced-order models (ROMs) are carried out. The use of a reduction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b6832776b855bd8fcf2b729cc2c434f
https://doi.org/10.1115/1.4041280
https://doi.org/10.1115/1.4041280