Matches in SemOpenAlex for { <https://semopenalex.org/work/W2793665107> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W2793665107 abstract "This thesis presents evidence on the ability of grid-based, Computational Fluid Dynamics methods based on the Unsteady Reynolds Averaged Navier-Stokes equations to accurately predict axial flight performance of rotors with modest computer resources. Three well-studied blades, the B0-105, S-76, and PSP main rotor blades, are used and results are compared with experimental data. Likewise, performance analyses of the JORP propeller and XV-15 tiltrotor blades are carried out, respectively, aiming to validate the employed CFD method for such relevant flows.Validation of the HMB3 CFD solver for complete tiltrotors is also presented. The aim is to assess the capability of the present CFD method in predicting tiltrotor airloads at different flight configurations. In this regard, three representative cases of the ERICA tiltrotor were selected, corresponding to aeroplane, transition corridor, and helicopter modes, covering most modes of tiltrotor flight.Aerodynamic optimisation of tiltrotor blades with high-fidelity computational fluid dynamics coupled with a discrete adjoint method is also carried out. This work shows how the main blade shape parameters influence the optimal performance of the tiltrotor in helicopter and aeroplane modes, and how a compromise blade shape can increase the overall tiltrotor performance.Finally, the implementation and validation of an efficient, high-order, finite-volume scheme (up to 4th-order of spatial accuracy) in the HMB3 CFD solver is presented. The scheme shows a higher level of accuracy if compared with the standard-MUSCL, and 4th-order accuracy was achieved on Cartesian grids. Furthermore, a significantly high spectral resolution (dispersion and dissipation) of the new scheme is observed. Two-and three-dimensional test cases were considered to demonstrate the new formulation. Results of the steady flow around the 7AD, S-76, JORP propeller, and XV-15 blades showed a better preservation of the vorticity and higher resolution of the vortical structures compared with the standard MUSCL solution. The method was also demonstrated for three-dimensional unsteady flows using overset and moving grid computations for the UH-60A rotor in forward flight and the ERICA tiltrotor in aeroplane mode. For medium grids, the new high-order scheme adds CPU and memory overheads of 22% and 23%, respectively. The parallel performance of the scheme is fair but can be further improved." @default.
- W2793665107 created "2018-03-29" @default.
- W2793665107 creator A5063145363 @default.
- W2793665107 date "2018-01-01" @default.
- W2793665107 modified "2023-09-28" @default.
- W2793665107 title "Development of predictive methods for tiltrotor flows" @default.
- W2793665107 hasPublicationYear "2018" @default.
- W2793665107 type Work @default.
- W2793665107 sameAs 2793665107 @default.
- W2793665107 citedByCount "0" @default.
- W2793665107 crossrefType "dissertation" @default.
- W2793665107 hasAuthorship W2793665107A5063145363 @default.
- W2793665107 hasConcept C117185709 @default.
- W2793665107 hasConcept C127413603 @default.
- W2793665107 hasConcept C13393347 @default.
- W2793665107 hasConcept C146978453 @default.
- W2793665107 hasConcept C1633027 @default.
- W2793665107 hasConcept C199104240 @default.
- W2793665107 hasConcept C199360897 @default.
- W2793665107 hasConcept C2778770139 @default.
- W2793665107 hasConcept C41008148 @default.
- W2793665107 hasConcept C80055088 @default.
- W2793665107 hasConceptScore W2793665107C117185709 @default.
- W2793665107 hasConceptScore W2793665107C127413603 @default.
- W2793665107 hasConceptScore W2793665107C13393347 @default.
- W2793665107 hasConceptScore W2793665107C146978453 @default.
- W2793665107 hasConceptScore W2793665107C1633027 @default.
- W2793665107 hasConceptScore W2793665107C199104240 @default.
- W2793665107 hasConceptScore W2793665107C199360897 @default.
- W2793665107 hasConceptScore W2793665107C2778770139 @default.
- W2793665107 hasConceptScore W2793665107C41008148 @default.
- W2793665107 hasConceptScore W2793665107C80055088 @default.
- W2793665107 hasLocation W27936651071 @default.
- W2793665107 hasOpenAccess W2793665107 @default.
- W2793665107 hasPrimaryLocation W27936651071 @default.
- W2793665107 hasRelatedWork W2075462678 @default.
- W2793665107 hasRelatedWork W2093905601 @default.
- W2793665107 hasRelatedWork W2111293154 @default.
- W2793665107 hasRelatedWork W2326459299 @default.
- W2793665107 hasRelatedWork W2328388469 @default.
- W2793665107 hasRelatedWork W2330135533 @default.
- W2793665107 hasRelatedWork W241765407 @default.
- W2793665107 hasRelatedWork W2460466960 @default.
- W2793665107 hasRelatedWork W2584040356 @default.
- W2793665107 hasRelatedWork W2586299285 @default.
- W2793665107 hasRelatedWork W2594405425 @default.
- W2793665107 hasRelatedWork W2597697242 @default.
- W2793665107 hasRelatedWork W2890813894 @default.
- W2793665107 hasRelatedWork W2965630996 @default.
- W2793665107 hasRelatedWork W2982053571 @default.
- W2793665107 hasRelatedWork W3152874752 @default.
- W2793665107 hasRelatedWork W3174051219 @default.
- W2793665107 hasRelatedWork W3175586207 @default.
- W2793665107 hasRelatedWork W3183562888 @default.
- W2793665107 hasRelatedWork W771755117 @default.
- W2793665107 isParatext "false" @default.
- W2793665107 isRetracted "false" @default.
- W2793665107 magId "2793665107" @default.
- W2793665107 workType "dissertation" @default.