Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Olivier Léonard"'
Autor:
Wenhai Du, Olivier Léonard
Publikováno v:
International Journal of Rotating Machinery, Vol 2012 (2012)
The object of this paper is to provide a reliable tool to simulate the stationary and transient operation performances in multistage axial compression systems, especially poststall behavior. An adapted version of the 1D Euler equations with additiona
Externí odkaz:
https://doaj.org/article/8d82d86f17454bcfb13c6c7274b95088
Autor:
Sebastien Borguet, Olivier Léonard
Publikováno v:
International Journal of Rotating Machinery, Vol 2011 (2011)
The goal of module performance analysis is to reliably assess the health of the main components of an aircraft engine. A predictive maintenance strategy can leverage this information to increase operability and safety as well as to reduce costs. Degr
Externí odkaz:
https://doaj.org/article/7d20e8bd0b9841e5af24196741446756
Publikováno v:
Journal of Thermal Science. 21:311-321
In this contribution a quasi-one-dimensional tool for stationary and transient simulations of post-stall flows in multistage axial compressors is presented. An adapted version of the 1D Euler equations with additional source terms is discretized with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce6a695a7a77c6f5026edf70257b3513
https://doi.org/10.1007/s11630-012-0549-y
https://doi.org/10.1007/s11630-012-0549-y
Autor:
Olivier Léonard, Sébastien Borguet
Publikováno v:
Control Engineering Practice. 17:494-502
Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of performing an accurate assessment of the engine condition. It is generally accepted that a practical im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bc09d1f302f4bd85dfb62fa2e212654
https://doi.org/10.1016/j.conengprac.2008.09.008
https://doi.org/10.1016/j.conengprac.2008.09.008
Publikováno v:
Journal of Propulsion and Power. 24:763-769
In the frame of turbine engine performance monitoring, system identification procedures are often used to adapt a simulation model of the engine to some observed data through a set of so-called health parameters. Doing so, the values of these health
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f85a810b0eaccc38740de9fd5a9f7be1
https://doi.org/10.2514/1.34320
https://doi.org/10.2514/1.34320
Publikováno v:
Journal of Computational and Applied Mathematics. 215:448-456
Evolutionary algorithms are robust and powerful global optimization techniques for solving large-scale problems that have many local optima. However, they require high CPU times, and they are very poor in terms of convergence performance. On the othe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c141addf023ebde1b48e33166e84c6f
https://doi.org/10.1016/j.cam.2006.03.048
https://doi.org/10.1016/j.cam.2006.03.048
Autor:
Olivier Léonard, Olivier Adam
Publikováno v:
Journal of Thermal Science. 17:7-20
The objective of this paper is to present a fast and reliable CFD model that is able to simulate stationary and transient operations of multistage compressors and turbines. This analysis tool is based on an adapted version of the Euler equations solv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::341d94d4899bcd269394d3f98e96f176
https://doi.org/10.1007/s11630-008-0007-z
https://doi.org/10.1007/s11630-008-0007-z
Autor:
Olivier Léonard, Sébastien Borguet
Publikováno v:
International Journal of Rotating Machinery, Vol 2008 (2008)
Engine health monitoring has been an area of intensive research for many years. Numerous methods have been developed with the goal of determining a faithful picture of the engine condition. On the other hand, the issue of sensor selection allowing an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeada7a845d73900dc492ea03984cd4a
https://doi.org/10.1155/2008/784749
https://doi.org/10.1155/2008/784749
Autor:
Jean-Francois Simon, Olivier Léonard
Publikováno v:
Journal of Thermal Science. 16:208-214
This contribution is dedicated to the modeling of the end-wall flows in a throughflow model for turbomachinery applications. The throughflow model is based on the Euler or Navier-Stokes equations solved by a Finite-Volume technique. Two approaches ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82c3f426100ca764e8231d9c8cc95048
https://doi.org/10.1007/s11630-007-0208-x
https://doi.org/10.1007/s11630-007-0208-x
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 138
Module performance analysis is a well-established framework to assess changes in the health condition of the components of the engine gas-path. The primary material of the technique is the so-called vector of residuals, which are built as the differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e65b29dc8843197fc363dda414e71fe
https://doi.org/10.1115/1.4031253
https://doi.org/10.1115/1.4031253