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The last decade has contributed to the rapid progress in developing high-power microwave sources. This Special Issue aims to bring together information about the most striking theoretical and experimental results, new trends in development, remarkable modern applications, new demands in parameter enhancement, and future goals. Although only a tiny part of the achievements of recent years is included in this Issue, we hope that the presented articles will be useful for experts and students focusing on modern vacuum electronics.

Technology: general issues --- Energy industries & utilities --- velocity ratio --- velocity spread --- low-voltage --- gyrotrons --- MIG --- particle simulation --- space charge effects --- pillbox window --- wide-band --- W-band --- low loss --- mode converter --- 220 GHz --- taper --- terahertz --- traveling-wave tube --- folded waveguide (FWG) --- slow wave system --- high harmonic traveling wave tube --- gyrotron --- quasi-optical cavity --- confocal waveguide --- frequency tuning --- high power --- sub-millimeter wave --- PFN-Marx --- compact --- modular --- trigger source --- gas switch --- mica capacitor --- millimeter waves --- wireless power transmitting --- quasi-optical antenna --- gaussian beam --- Gyrotron --- sub-terahertz --- high-power microwave source --- HPM source --- virtual cathode oscillator --- vircator --- ring reflector --- high-power electromagnetic waves (HPEM) --- semiconductor --- failure threshold time --- microwave hardness --- electromagnetic pulse (EMP) shielding --- broadband --- gyro-TWT --- high-resolution imaging radar --- TE02 mode --- dielectric properties --- low-reflection barrier windows --- broadband window --- microwaves --- terahertz radiation --- n/a

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• Reference Manager
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The last decade has contributed to the rapid progress in developing high-power microwave sources. This Special Issue aims to bring together information about the most striking theoretical and experimental results, new trends in development, remarkable modern applications, new demands in parameter enhancement, and future goals. Although only a tiny part of the achievements of recent years is included in this Issue, we hope that the presented articles will be useful for experts and students focusing on modern vacuum electronics.

velocity ratio --- velocity spread --- low-voltage --- gyrotrons --- MIG --- particle simulation --- space charge effects --- pillbox window --- wide-band --- W-band --- low loss --- mode converter --- 220 GHz --- taper --- terahertz --- traveling-wave tube --- folded waveguide (FWG) --- slow wave system --- high harmonic traveling wave tube --- gyrotron --- quasi-optical cavity --- confocal waveguide --- frequency tuning --- high power --- sub-millimeter wave --- PFN-Marx --- compact --- modular --- trigger source --- gas switch --- mica capacitor --- millimeter waves --- wireless power transmitting --- quasi-optical antenna --- gaussian beam --- Gyrotron --- sub-terahertz --- high-power microwave source --- HPM source --- virtual cathode oscillator --- vircator --- ring reflector --- high-power electromagnetic waves (HPEM) --- semiconductor --- failure threshold time --- microwave hardness --- electromagnetic pulse (EMP) shielding --- broadband --- gyro-TWT --- high-resolution imaging radar --- TE02 mode --- dielectric properties --- low-reflection barrier windows --- broadband window --- microwaves --- terahertz radiation --- n/a

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This book contains the successful submissions to a Special Issue of Energies entitled “Engineering Fluid Dynamics 2019–2020”. The topic of engineering fluid dynamics includes both experimental and computational studies. Of special interest were submissions from the fields of mechanical, chemical, marine, safety, and energy engineering. We welcomed original research articles and review articles. After one-and-a-half years, 59 papers were submitted and 31 were accepted for publication. The average processing time was about 41 days. The authors had the following geographical distribution: China (15); Korea (7); Japan (3); Norway (2); Sweden (2); Vietnam (2); Australia (1); Denmark (1); Germany (1); Mexico (1); Poland (1); Saudi Arabia (1); USA (1); Serbia (1). Papers covered a wide range of topics including analysis of free-surface waves, bridge girders, gear boxes, hills, radiation heat transfer, spillways, turbulent flames, pipe flow, open channels, jets, combustion chambers, welding, sprinkler, slug flow, turbines, thermoelectric power generation, airfoils, bed formation, fires in tunnels, shell-and-tube heat exchangers, and pumps.

History of engineering & technology --- CFD --- gap resonance --- hydrodynamic forces --- free surface waves --- URANS --- twin-box deck --- aerodynamics --- vortex shedding --- splash lubrication --- dynamic motion --- gearbox --- churning power losses --- non-inertial coordinate system --- ground roughness --- hill shape --- hill slope --- large-eddy simulations --- turbulent flow fields --- turbulent structure --- computational fluid dynamics (CFD) --- large eddy simulations (LES) --- 3D hill --- canopy --- flow fields --- radiation --- blocked-off-region procedure --- heat recuperation --- anisotropic scattering --- mie particles --- numerical simulation --- horizontal face angle --- energy dissipation rates --- stepped spillway --- ultra-low specific speed magnetic drive pump --- orthogonal test --- splitter blades --- optimized design --- pressure fluctuation --- radial force --- dilution --- turbulent flame --- premixed --- OH --- CH2O --- planar laser-induced fluorescence --- self-excited oscillation jet --- organ–Helmholtz nozzle --- pulse waterjet --- pressure pulsation amplitude --- WMLES --- VLSMs --- LSMs --- turbulent boundary flow --- roughness --- surrogate model --- deep neural network --- multiphase flow --- horizontal pipe --- liquid holdup --- pressure gradient --- coherent structures --- turbulent boundary layer --- stability --- pre-multiplied wind velocity spectrum --- spatial correlation coefficient field --- tunnel fires --- jet fan speed --- heat release rate --- aspect ratio --- smoke movement --- visibility --- smoke layer thickness --- smoke stratification --- orifice shape --- vertical jet --- velocity ratio --- numerical investigation --- hydraulic characteristics --- impinging water jet --- impinging height --- numerical calculation --- swirler --- optimized --- genetic algorithms --- recirculation --- combustion --- experimental validation --- welding spatter --- distribution --- shield arc metal welding --- particle heat transfer --- fire risk --- sprinkler --- fire dynamics simulator (FDS) --- fire suppression --- extinguishing coefficient --- smoke logging --- smoke spread --- pipe insulation --- fire growth rate index --- scale factor --- volume fraction --- ignition heat source --- maximum heat release rate --- time to reach maximum HRR (heat release rate) --- control --- cylinder --- energy efficiency --- clamping --- pneumatics --- unsteady RANS simulation --- two-phase flow --- riser-induced slug flow --- LedaFlow --- VOF-model --- evacuation --- interaction between smoke and evacuees --- inner smoke force --- modified BR-smoke model --- twin H-rotor vertical-axis turbines --- wake --- instability --- wavelet transform --- computational fluid dynamics (CFD), multiphysics --- heat transfer --- thermoelectricity --- automotive --- traditional market --- fire spread rate --- radiant heat flux --- separation distance --- rotor stator interaction --- boundary layer --- secondary vortex --- unsteady flow --- submerged jet --- climate change --- renewable energy --- wind power --- accelerators --- turbines --- power extraction --- Betz --- freestream theory --- hybrid simulation method --- multi-fluid model --- discrete element method, sedimentation, bed formation --- PIV --- shell-and-tube --- shell side --- tube bundle --- heat exchanger --- baffle --- maldistribution

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This book contains the successful submissions to a Special Issue of Energies entitled “Engineering Fluid Dynamics 2019–2020”. The topic of engineering fluid dynamics includes both experimental and computational studies. Of special interest were submissions from the fields of mechanical, chemical, marine, safety, and energy engineering. We welcomed original research articles and review articles. After one-and-a-half years, 59 papers were submitted and 31 were accepted for publication. The average processing time was about 41 days. The authors had the following geographical distribution: China (15); Korea (7); Japan (3); Norway (2); Sweden (2); Vietnam (2); Australia (1); Denmark (1); Germany (1); Mexico (1); Poland (1); Saudi Arabia (1); USA (1); Serbia (1). Papers covered a wide range of topics including analysis of free-surface waves, bridge girders, gear boxes, hills, radiation heat transfer, spillways, turbulent flames, pipe flow, open channels, jets, combustion chambers, welding, sprinkler, slug flow, turbines, thermoelectric power generation, airfoils, bed formation, fires in tunnels, shell-and-tube heat exchangers, and pumps.

CFD --- gap resonance --- hydrodynamic forces --- free surface waves --- URANS --- twin-box deck --- aerodynamics --- vortex shedding --- splash lubrication --- dynamic motion --- gearbox --- churning power losses --- non-inertial coordinate system --- ground roughness --- hill shape --- hill slope --- large-eddy simulations --- turbulent flow fields --- turbulent structure --- computational fluid dynamics (CFD) --- large eddy simulations (LES) --- 3D hill --- canopy --- flow fields --- radiation --- blocked-off-region procedure --- heat recuperation --- anisotropic scattering --- mie particles --- numerical simulation --- horizontal face angle --- energy dissipation rates --- stepped spillway --- ultra-low specific speed magnetic drive pump --- orthogonal test --- splitter blades --- optimized design --- pressure fluctuation --- radial force --- dilution --- turbulent flame --- premixed --- OH --- CH2O --- planar laser-induced fluorescence --- self-excited oscillation jet --- organ–Helmholtz nozzle --- pulse waterjet --- pressure pulsation amplitude --- WMLES --- VLSMs --- LSMs --- turbulent boundary flow --- roughness --- surrogate model --- deep neural network --- multiphase flow --- horizontal pipe --- liquid holdup --- pressure gradient --- coherent structures --- turbulent boundary layer --- stability --- pre-multiplied wind velocity spectrum --- spatial correlation coefficient field --- tunnel fires --- jet fan speed --- heat release rate --- aspect ratio --- smoke movement --- visibility --- smoke layer thickness --- smoke stratification --- orifice shape --- vertical jet --- velocity ratio --- numerical investigation --- hydraulic characteristics --- impinging water jet --- impinging height --- numerical calculation --- swirler --- optimized --- genetic algorithms --- recirculation --- combustion --- experimental validation --- welding spatter --- distribution --- shield arc metal welding --- particle heat transfer --- fire risk --- sprinkler --- fire dynamics simulator (FDS) --- fire suppression --- extinguishing coefficient --- smoke logging --- smoke spread --- pipe insulation --- fire growth rate index --- scale factor --- volume fraction --- ignition heat source --- maximum heat release rate --- time to reach maximum HRR (heat release rate) --- control --- cylinder --- energy efficiency --- clamping --- pneumatics --- unsteady RANS simulation --- two-phase flow --- riser-induced slug flow --- LedaFlow --- VOF-model --- evacuation --- interaction between smoke and evacuees --- inner smoke force --- modified BR-smoke model --- twin H-rotor vertical-axis turbines --- wake --- instability --- wavelet transform --- computational fluid dynamics (CFD), multiphysics --- heat transfer --- thermoelectricity --- automotive --- traditional market --- fire spread rate --- radiant heat flux --- separation distance --- rotor stator interaction --- boundary layer --- secondary vortex --- unsteady flow --- submerged jet --- climate change --- renewable energy --- wind power --- accelerators --- turbines --- power extraction --- Betz --- freestream theory --- hybrid simulation method --- multi-fluid model --- discrete element method, sedimentation, bed formation --- PIV --- shell-and-tube --- shell side --- tube bundle --- heat exchanger --- baffle --- maldistribution

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This book contains the successful submissions to a Special Issue of Energies entitled “Engineering Fluid Dynamics 2019–2020”. The topic of engineering fluid dynamics includes both experimental and computational studies. Of special interest were submissions from the fields of mechanical, chemical, marine, safety, and energy engineering. We welcomed original research articles and review articles. After one-and-a-half years, 59 papers were submitted and 31 were accepted for publication. The average processing time was about 41 days. The authors had the following geographical distribution: China (15); Korea (7); Japan (3); Norway (2); Sweden (2); Vietnam (2); Australia (1); Denmark (1); Germany (1); Mexico (1); Poland (1); Saudi Arabia (1); USA (1); Serbia (1). Papers covered a wide range of topics including analysis of free-surface waves, bridge girders, gear boxes, hills, radiation heat transfer, spillways, turbulent flames, pipe flow, open channels, jets, combustion chambers, welding, sprinkler, slug flow, turbines, thermoelectric power generation, airfoils, bed formation, fires in tunnels, shell-and-tube heat exchangers, and pumps.

History of engineering & technology --- CFD --- gap resonance --- hydrodynamic forces --- free surface waves --- URANS --- twin-box deck --- aerodynamics --- vortex shedding --- splash lubrication --- dynamic motion --- gearbox --- churning power losses --- non-inertial coordinate system --- ground roughness --- hill shape --- hill slope --- large-eddy simulations --- turbulent flow fields --- turbulent structure --- computational fluid dynamics (CFD) --- large eddy simulations (LES) --- 3D hill --- canopy --- flow fields --- radiation --- blocked-off-region procedure --- heat recuperation --- anisotropic scattering --- mie particles --- numerical simulation --- horizontal face angle --- energy dissipation rates --- stepped spillway --- ultra-low specific speed magnetic drive pump --- orthogonal test --- splitter blades --- optimized design --- pressure fluctuation --- radial force --- dilution --- turbulent flame --- premixed --- OH --- CH2O --- planar laser-induced fluorescence --- self-excited oscillation jet --- organ–Helmholtz nozzle --- pulse waterjet --- pressure pulsation amplitude --- WMLES --- VLSMs --- LSMs --- turbulent boundary flow --- roughness --- surrogate model --- deep neural network --- multiphase flow --- horizontal pipe --- liquid holdup --- pressure gradient --- coherent structures --- turbulent boundary layer --- stability --- pre-multiplied wind velocity spectrum --- spatial correlation coefficient field --- tunnel fires --- jet fan speed --- heat release rate --- aspect ratio --- smoke movement --- visibility --- smoke layer thickness --- smoke stratification --- orifice shape --- vertical jet --- velocity ratio --- numerical investigation --- hydraulic characteristics --- impinging water jet --- impinging height --- numerical calculation --- swirler --- optimized --- genetic algorithms --- recirculation --- combustion --- experimental validation --- welding spatter --- distribution --- shield arc metal welding --- particle heat transfer --- fire risk --- sprinkler --- fire dynamics simulator (FDS) --- fire suppression --- extinguishing coefficient --- smoke logging --- smoke spread --- pipe insulation --- fire growth rate index --- scale factor --- volume fraction --- ignition heat source --- maximum heat release rate --- time to reach maximum HRR (heat release rate) --- control --- cylinder --- energy efficiency --- clamping --- pneumatics --- unsteady RANS simulation --- two-phase flow --- riser-induced slug flow --- LedaFlow --- VOF-model --- evacuation --- interaction between smoke and evacuees --- inner smoke force --- modified BR-smoke model --- twin H-rotor vertical-axis turbines --- wake --- instability --- wavelet transform --- computational fluid dynamics (CFD), multiphysics --- heat transfer --- thermoelectricity --- automotive --- traditional market --- fire spread rate --- radiant heat flux --- separation distance --- rotor stator interaction --- boundary layer --- secondary vortex --- unsteady flow --- submerged jet --- climate change --- renewable energy --- wind power --- accelerators --- turbines --- power extraction --- Betz --- freestream theory --- hybrid simulation method --- multi-fluid model --- discrete element method, sedimentation, bed formation --- PIV --- shell-and-tube --- shell side --- tube bundle --- heat exchanger --- baffle --- maldistribution --- CFD --- gap resonance --- hydrodynamic forces --- free surface waves --- URANS --- twin-box deck --- aerodynamics --- vortex shedding --- splash lubrication --- dynamic motion --- gearbox --- churning power losses --- non-inertial coordinate system --- ground roughness --- hill shape --- hill slope --- large-eddy simulations --- turbulent flow fields --- turbulent structure --- computational fluid dynamics (CFD) --- large eddy simulations (LES) --- 3D hill --- canopy --- flow fields --- radiation --- blocked-off-region procedure --- heat recuperation --- anisotropic scattering --- mie particles --- numerical simulation --- horizontal face angle --- energy dissipation rates --- stepped spillway --- ultra-low specific speed magnetic drive pump --- orthogonal test --- splitter blades --- optimized design --- pressure fluctuation --- radial force --- dilution --- turbulent flame --- premixed --- OH --- CH2O --- planar laser-induced fluorescence --- self-excited oscillation jet --- organ–Helmholtz nozzle --- pulse waterjet --- pressure pulsation amplitude --- WMLES --- VLSMs --- LSMs --- turbulent boundary flow --- roughness --- surrogate model --- deep neural network --- multiphase flow --- horizontal pipe --- liquid holdup --- pressure gradient --- coherent structures --- turbulent boundary layer --- stability --- pre-multiplied wind velocity spectrum --- spatial correlation coefficient field --- tunnel fires --- jet fan speed --- heat release rate --- aspect ratio --- smoke movement --- visibility --- smoke layer thickness --- smoke stratification --- orifice shape --- vertical jet --- velocity ratio --- numerical investigation --- hydraulic characteristics --- impinging water jet --- impinging height --- numerical calculation --- swirler --- optimized --- genetic algorithms --- recirculation --- combustion --- experimental validation --- welding spatter --- distribution --- shield arc metal welding --- particle heat transfer --- fire risk --- sprinkler --- fire dynamics simulator (FDS) --- fire suppression --- extinguishing coefficient --- smoke logging --- smoke spread --- pipe insulation --- fire growth rate index --- scale factor --- volume fraction --- ignition heat source --- maximum heat release rate --- time to reach maximum HRR (heat release rate) --- control --- cylinder --- energy efficiency --- clamping --- pneumatics --- unsteady RANS simulation --- two-phase flow --- riser-induced slug flow --- LedaFlow --- VOF-model --- evacuation --- interaction between smoke and evacuees --- inner smoke force --- modified BR-smoke model --- twin H-rotor vertical-axis turbines --- wake --- instability --- wavelet transform --- computational fluid dynamics (CFD), multiphysics --- heat transfer --- thermoelectricity --- automotive --- traditional market --- fire spread rate --- radiant heat flux --- separation distance --- rotor stator interaction --- boundary layer --- secondary vortex --- unsteady flow --- submerged jet --- climate change --- renewable energy --- wind power --- accelerators --- turbines --- power extraction --- Betz --- freestream theory --- hybrid simulation method --- multi-fluid model --- discrete element method, sedimentation, bed formation --- PIV --- shell-and-tube --- shell side --- tube bundle --- heat exchanger --- baffle --- maldistribution