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9th EASN International Conference on Innovation in Aviation & Space
| 9th EASN International Conference on Innovation in Aviation & Space |
| Autore | Pantelakis Spiros |
| Pubbl/distr/stampa | MDPI - Multidisciplinary Digital Publishing Institute, 2022 |
| Descrizione fisica | 1 online resource (158 p.) |
| Soggetto topico |
History of engineering & technology
Technology: general issues |
| Soggetto non controllato |
aeronautical
aging aircraft aircraft thermal management analytical model anti-icing axial compressor blade brownout carbon fibre thermoplastic composite CENTRELINE CFD CFRP coating compressor surge CubeSat DC link voltage level design space exploration electric propulsion embedded battery erosion FEM functional integration fuzzy set gas path analysis gas turbine engine gas-turbine performance hybrid electric propulsion identification mechanical testing membership function n/a Pareto sets PEEK matrix performance model propeller propeller optimization regularization robust estimation spray-coat stall margin static and fatigue STOL aircraft structural battery structural integration superhydrophobic surface heat exchanger turboshaft wear woven |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910576870503321 |
Pantelakis Spiros
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| MDPI - Multidisciplinary Digital Publishing Institute, 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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The Fluid Dynamic Basis for Actuator Disc and Rotor Theories : Revised Second Edition
| The Fluid Dynamic Basis for Actuator Disc and Rotor Theories : Revised Second Edition |
| Autore | van Kuik G. A. M |
| Edizione | [1st ed.] |
| Pubbl/distr/stampa | 2022 |
| Descrizione fisica | 1 online resource (162 pages) |
| Soggetto topico | Technology, engineering, agriculture |
| Soggetto non controllato |
actuator disc
history wind turbine propeller conservative forces non-conservative forces |
| ISBN |
9781643682792
1643682792 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Intro -- Title Page -- Preface -- Reading guide -- Acknowledgement -- Nomenclature -- More than a century of rotor research -- Introduction -- History of the actuator disc momentum theory -- The British School -- The German and Russian School -- The contribution of Joukowsky and Betz to the vortex theory of propellers -- The Betz-Joukowsky limit for wind turbines -- From actuator disc to rotor aerodynamics -- Why this book? -- Force fields in fluid dynamics -- Introduction -- The equation of motion and the coordinate systems -- Equivalence of the kinematic and dynamic methods -- Conservative and non-conservative force fields -- Force fields and energy -- Work done by force fields -- Choice of reference system -- Work done by non-conservative force fields -- Pressure as a conservative force in momentum balances -- Pressure interpreted as potential energy -- Definition of (non-)conservative forces as used in this book -- Evaluation -- Force fields and vorticity -- Introduction -- The role of Helmholtz's conservation laws -- Generation of actuator disc vorticity -- Convection of actuator disc vorticity -- Convection of rotor vorticity -- Evaluation -- The disc as representation of a rotor -- Introduction -- Loads and power of a Joukowsky disc and rotor -- The actuator disc equation -- The rotor blade -- Power and thrust coefficients for Joukowsky discs / rotors -- The transition from a B-bladed rotor to the Joukowsky disc -- Comparison of the flow fields of a disc and rotor -- Evaluation -- Analysis of Froude's actuator disc flows -- Introduction -- One-dimensional momentum theory -- The momentum balance -- Momentum theory without conservative forces -- Momentum theory including conservative forces, applied to a stream annulus -- Numerical assessment of Froude's actuator disc performance -- The model and accuracy of computation.
Comparison of calculated performance with momentum theory results -- Comparison with experimental results -- Flow details -- Flow and pressure patterns -- Properties of the wake boundary -- Pressure and velocity at the disc -- Pressure at the axis -- Evaluation -- Analysis of Joukowsky's actuator disc flows -- Introduction -- Two-dimensional momentum theory -- The equations for a Joukowsky disc -- The disc load -- The far wake outside the vortex core -- The vortex core -- The momentum, mass and energy balance -- Limit values of the Joukowsky momentum theory -- Results for , 0. -- Propeller discs with a wake of constant radius or with wake expansion -- The static disc or disc in hover -- The maximum efficiency of a wind turbine disc -- The efficiency of propeller discs -- Numerical assessment of flow details -- The numerical model -- Comparison of wind turbine and propeller discs at =1 -- Comparison of a wind turbine and propeller disc with similar wake expansion -- The role of swirl and conservative pressure distributions -- Comparison of the Joukowsky and Betz-Goldstein solutions -- Evaluation -- The velocity distribution at the disc -- Introduction -- The absolute velocity -- Wind turbine flows -- Propeller flows -- Explanation of the (non-)uniformity of vs -- The axial velocity -- Momentum balance per annulus -- An engineering model for the axial velocity at a high wind turbine disc -- The radial velocity -- Evaluation -- Special topics: cons. loads at a thick disc & -- blade tip -- Introduction -- The generation of a Rankine vortex -- Wu's actuator disc equation -- The force field required to generate a Rankine vortex -- Interpretation of the radial component of the load -- Numerical assessment of the impact of the radial load -- The rotor blade -- Inboard motion of a tip vortex of a wind turbine blade. Side step: conservative, spanwise load on an elliptic wing -- Conservative and non-conservative blade loads -- Experimental and numerical results for a model wind turbine rotor -- Determination of the conservative tip load -- The tip vortex trajectory -- The role of conservative forces -- Evaluation -- From disc theory to BEM models: the tip correction -- Introduction -- Development of the tip correction -- In BEM methods -- In actuator disc, actuator line and lifting line methods -- The distribution of the axial velocity -- The radial distribution -- The azimuthal distribution: averaged or at blade position -- The azimuthal distribution: decambering of aerofoils -- The radial distribution of blade -- The aspect ratio as a measure for tip effects -- Conservative tip load and the tip vortex trajectory -- Evaluation -- Epilogue -- Vector expressions in cylindrical coordinates -- Balance of angular momentum -- The blade load expressed as pressure distribution -- The potential flow model -- Components of the model -- Convergence scheme -- Verification, sensitivity and accuracy -- Bibliography -- Index. |
| Record Nr. | UNINA-9910629581603321 |
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van Kuik G. A. M
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| 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Fluid/Structure Interactions
| Fluid/Structure Interactions |
| Autore | Semenov Yuriy |
| Pubbl/distr/stampa | Basel, : MDPI - Multidisciplinary Digital Publishing Institute, 2022 |
| Descrizione fisica | 1 online resource (240 p.) |
| Soggetto topico |
History of engineering & technology
Technology: general issues |
| Soggetto non controllato |
acoustic-structure coupling
axial hydraulic force blade design boundary condition Brillouin criterion cavity detachment CFD-DEM coastal structure codend computational fluid dynamics cutting ratio deformation dominant frequency electromagnetic excitation engineering design parameters environment protection flexible beam flexible pipe fluid excitation fluid mechanics fluid-structure interaction fluttering motions free streamlines freefall high speed imaging higher mode hydraulic machinery runner hydrodynamic characteristics hydrodynamic loading ice crack ice resistance intake velocity Kane's method lifeboat lock-in marine centrifugal pump marine growth morison coefficients motion trajectory mussels n/a numerical analysis numerical simulation one-way approach one-way coupling open water test OpenFOAM oscillatory flow propeller pump turbine roughness ship motion starting-up stress structural analysis system coupling the Fourier series time-varying velocity cap vibration excitation source vortex-induced vibration wet modal analysis |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910557615203321 |
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Semenov Yuriy
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| Basel, : MDPI - Multidisciplinary Digital Publishing Institute, 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Selected Papers from the ICEUBI2019 - International Congress on Engineering - Engineering for Evolution
| Selected Papers from the ICEUBI2019 - International Congress on Engineering - Engineering for Evolution |
| Autore | Calado Maria do Rosário Alves |
| Pubbl/distr/stampa | Basel, Switzerland, : MDPI - Multidisciplinary Digital Publishing Institute, 2021 |
| Descrizione fisica | 1 online resource (116 p.) |
| Soggetto topico | Technology: general issues |
| Soggetto non controllato |
aerodynamic coefficients
air-cooled condenser aircraft bioenergetics biomimetics energy saving and efficiency evaporative flight efficiency flight speed grey wolf optimizer grid-tied inverter HVAC hydro-thermal coordination Lagrange multipliers Lagrangian dual problem Lagrangian relaxation LCL filter Liquid Rocket Engines passive damping PR controllers propeller propulsive efficiency step-size update algorithm subgradient methods supercritical injection turboprop turbulence modeling TWI water-cooled condenser |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910557344903321 |
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Calado Maria do Rosário Alves
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| Basel, Switzerland, : MDPI - Multidisciplinary Digital Publishing Institute, 2021 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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