00986nam a2200277 i 450099100152051970753620020503122514.0000419s1979 it ||| | ita b10232540-39ule_instLE01279207ExLDip.to LingueitaO'Hara, John439141Appuntamento a Samarra /John O'Hara ; traduzione di Raffaella Lotteri ; nota introduttiva di Ferruccio Folkel1 ed.Milamo :Mondadori,c1979259 p. ;19 cm.Oscar narrativa ;962Lotteri, RaffaellaFolkel, FerruccioAppointement in Samarra.b1023254017-02-1727-06-02991001520519707536LE012 818.54 OHA12012000017856le012-E0.00-l- 02020.i1028257927-06-02Appuntamento a Samarra207553UNISALENTOle01201-01-00ma -itait 0104392oam 2200649I 450 991097001040332120240410023124.01-317-39674-X0-429-22599-710.1201/b18441 (CKB)2670000000616285(EBL)2050822(SSID)ssj0001481819(PQKBManifestationID)11857918(PQKBTitleCode)TC0001481819(PQKBWorkID)11502950(PQKB)11726052(MiAaPQ)EBC2050822(OCoLC)908932213(EXLCZ)99267000000061628520180420d20152015 uy 0engur|n|---|||||txtccrEnergy dissipation in hydraulic structures /Hubert Chanson, School of Civil Engineering, University of Queensland, Brisbane, Australia1st ed.Boca Raton :CRC Press,[2015].©20151 online resource (178 p.)Balkema BookIAHR MonographsDescription based upon print version of record.1-138-02755-3 1-315-68029-7 Includes bibliographical references at the end of each chapters.Front Cover; About the IAHR Book Series; Table of contents; Preface; 1. Introduction: Energy dissipators in hydraulic structures; 2. Energy dissipation at block ramps; 3. Stepped spillways and cascades; 4. Hydraulic jumps and stilling basins; 5. Ski jumps, jets and plunge pools; 6. Impact dissipators; 7. Energy dissipation: Concluding remarksRecent advances in technology have permitted the construction of large dams, reservoirs and channels. This progress has necessitated the development of new design and construction techniques, particularly with the provision of adequate flood release facilities. Chutes and spillways are designed to spill large water discharges over a hydraulic structure (e.g. dam, weir) without major damage to the structure itself and to its environment. At the hydraulic structure, the flood waters rush as an open channel flow or free-falling jet, and it is essential to dissipate a very signifi cant part of the flow kinetic energy to avoid damage to the hydraulic structure and its surroundings. Energy dissipation may be realised by a wide range of design techniques. A number of modern developments have demonstrated that such energy dissipation may be achieved (a) along the chute, (b) in a downstream energy dissipator, or (c) a combination of both. The magnitude of turbulent energy that must be dissipated in hydraulic structures is enormous even in small rural and urban structures. For a small storm waterway discharging at a 4 m3/s mm high drop, the turbulent kinetic energy flux per unit time is 120 kW! At a large dam, the rate of energy dissipation can exceed tens to hundreds of gigawatts; that is, many times the energy production rate of nuclear power plants. Many engineers have never been exposed to the complexity of energy dissipator designs, to the physical processes taking place and to the structural challenges. Several energy dissipators, spillways and storm waterways failed because of poor engineering design. It is believed that a major issue affecting these failures was the lack of understanding of the basic turbulent dissipation processes and of the interactions between free-surface aeration and flow turbulence. In that context, an authoritative referencebook on energy dissipation in hydraulic structures is proposed here. The book contents encompass a range of design techniques including block ramps, stepped spillways, hydraulic jump stilling basins, ski jumps and impact dissipators.IAHR MonographsHydrodynamicsHydraulic structuresEnergy dissipationDiversion structures (Hydraulic engineering)Hydrodynamics.Hydraulic structures.Energy dissipation.Diversion structures (Hydraulic engineering)628.10826634Chanson Hubert285131FlBoTFGFlBoTFGBOOK9910970010403321Energy dissipation in hydraulic structures2876157UNINA