Matches in SemOpenAlex for { <https://semopenalex.org/work/W2753707060> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W2753707060 abstract "To reduce fuel consumption as well as noise and CO2 emissions, the overall trend in civil aviation is to decreaseexhaust velocities associated with an increase of the fan diameter, implying more weight and more drag because ofthe larger nacelle size. To compensate for the introduced weight increase, the concept of nacelles with short inlet,for which the interaction between the nacelle and the fan is higher than for current engines, is often considered. Thispaper proposes to design a short inlet geometry with a length over diameter ratio of l/D�0.35 that provides better orequal aerodynamic performances, predominantly for the fan, than conventional long inlet configurations with typicalratios of l/D�0.65. To obtain such a design, an optimization process with a flow field covering the entire fan, intakeand nacelle system is used. The first step is to define the parameterization of the nacelle which finally containsthe nacelle and the intake contour as basics parameters. The next step is to establish a robust and automaticmeshing procedure of the entire calculation domain (far field, nacelle, intake and fan), which guarantees a highmesh quality independent of the parameter selected. AutoOpti, which is an optimization tool developed at DLR,is applied, providing an optimization framework based on an evolutionary algorithm with heavy surrogate modelenhancements. For the calculations, which are realized with the DLR in-house solver TRACE, three operatingconditions are considered: static take-off (OP1), take-off (OP2) and cruise (OP3). The classification of the resultsis based on the assessment of the fan aerodynamic performances, considering fan total pressure ratio for OP1and OP2 with the aim to increase the fan stability limit and on the isentropic efficiency for OP3. Among the Paretofront,the best individual is selected and analyzed qualitatively and quantitatively, explaining the performance gainand corresponding geometric modifications of the intake and lip section. A new optimization process is realized tominimize the pressure peak observed at static take-off condition on the nacelle’s leading edge. Then, a full annulusnacelle geometry is created in order to study the influence of some asymmetric parameters such as the angle ofthe nacelle inlet face (droop angle), the thickness in circumferential direction and the inflow angle" @default.
- W2753707060 created "2017-09-15" @default.
- W2753707060 creator A5022560140 @default.
- W2753707060 creator A5036528152 @default.
- W2753707060 creator A5069961145 @default.
- W2753707060 date "2015-09-01" @default.
- W2753707060 modified "2023-09-27" @default.
- W2753707060 title "FAN AND INTAKE COUPLED AERODYNAMIC DESIGN OPTIMIZATION FOR UHBR AERO-ENGINES WITH LOW-PRESSURE RATIO FANS" @default.
- W2753707060 hasPublicationYear "2015" @default.
- W2753707060 type Work @default.
- W2753707060 sameAs 2753707060 @default.
- W2753707060 citedByCount "0" @default.
- W2753707060 crossrefType "journal-article" @default.
- W2753707060 hasAuthorship W2753707060A5022560140 @default.
- W2753707060 hasAuthorship W2753707060A5036528152 @default.
- W2753707060 hasAuthorship W2753707060A5069961145 @default.
- W2753707060 hasConcept C110050840 @default.
- W2753707060 hasConcept C127413603 @default.
- W2753707060 hasConcept C13393347 @default.
- W2753707060 hasConcept C145244895 @default.
- W2753707060 hasConcept C146978453 @default.
- W2753707060 hasConcept C171146098 @default.
- W2753707060 hasConcept C199104240 @default.
- W2753707060 hasConcept C199360897 @default.
- W2753707060 hasConcept C201289731 @default.
- W2753707060 hasConcept C205167488 @default.
- W2753707060 hasConcept C2778449969 @default.
- W2753707060 hasConcept C2778770139 @default.
- W2753707060 hasConcept C34329639 @default.
- W2753707060 hasConcept C41008148 @default.
- W2753707060 hasConcept C45882903 @default.
- W2753707060 hasConcept C72921944 @default.
- W2753707060 hasConcept C78519656 @default.
- W2753707060 hasConceptScore W2753707060C110050840 @default.
- W2753707060 hasConceptScore W2753707060C127413603 @default.
- W2753707060 hasConceptScore W2753707060C13393347 @default.
- W2753707060 hasConceptScore W2753707060C145244895 @default.
- W2753707060 hasConceptScore W2753707060C146978453 @default.
- W2753707060 hasConceptScore W2753707060C171146098 @default.
- W2753707060 hasConceptScore W2753707060C199104240 @default.
- W2753707060 hasConceptScore W2753707060C199360897 @default.
- W2753707060 hasConceptScore W2753707060C201289731 @default.
- W2753707060 hasConceptScore W2753707060C205167488 @default.
- W2753707060 hasConceptScore W2753707060C2778449969 @default.
- W2753707060 hasConceptScore W2753707060C2778770139 @default.
- W2753707060 hasConceptScore W2753707060C34329639 @default.
- W2753707060 hasConceptScore W2753707060C41008148 @default.
- W2753707060 hasConceptScore W2753707060C45882903 @default.
- W2753707060 hasConceptScore W2753707060C72921944 @default.
- W2753707060 hasConceptScore W2753707060C78519656 @default.
- W2753707060 hasLocation W27537070601 @default.
- W2753707060 hasOpenAccess W2753707060 @default.
- W2753707060 hasPrimaryLocation W27537070601 @default.
- W2753707060 hasRelatedWork W1635891078 @default.
- W2753707060 hasRelatedWork W1900130681 @default.
- W2753707060 hasRelatedWork W1966514058 @default.
- W2753707060 hasRelatedWork W1978774091 @default.
- W2753707060 hasRelatedWork W1982701580 @default.
- W2753707060 hasRelatedWork W2024320532 @default.
- W2753707060 hasRelatedWork W2078656275 @default.
- W2753707060 hasRelatedWork W2094956820 @default.
- W2753707060 hasRelatedWork W2188552368 @default.
- W2753707060 hasRelatedWork W2331143477 @default.
- W2753707060 hasRelatedWork W2378624352 @default.
- W2753707060 hasRelatedWork W2392287614 @default.
- W2753707060 hasRelatedWork W2503024809 @default.
- W2753707060 hasRelatedWork W2905076047 @default.
- W2753707060 hasRelatedWork W2945343533 @default.
- W2753707060 hasRelatedWork W2990957573 @default.
- W2753707060 hasRelatedWork W3037343835 @default.
- W2753707060 hasRelatedWork W3131769999 @default.
- W2753707060 hasRelatedWork W4687061 @default.
- W2753707060 hasRelatedWork W2324937332 @default.
- W2753707060 isParatext "false" @default.
- W2753707060 isRetracted "false" @default.
- W2753707060 magId "2753707060" @default.
- W2753707060 workType "article" @default.