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Phase Velocity

PEMC Paraboloidal Reflector in Chiral Medium Supporting Positive Phase Velocity and Negative Phase Velocity Simultaneously

PEMC Paraboloidal Reflector in Chiral Medium Supporting Positive Phase Velocity and Negative Phase Velocity Simultaneously

... Abstract—Focal region fields of a perfect electromagnetic conductor (PEMC) paraboloidal reflector placed in homogenous and reciprocal chiral medium are analyzed under the effect of high chirality parameter. The chiral ...

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A flowmeter for measuring the dispersed phase velocity in multiphase flow with non uniform velocity profile

A flowmeter for measuring the dispersed phase velocity in multiphase flow with non uniform velocity profile

... Signals V out , a and V out , b were each rectified and low pass filtered to produce d.c. output voltages V a and V b which could be subsequently cross correlated to provide information on the mean dispersed phase ...

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A phase velocity filter for the measurement of lamb wave dispersion

A phase velocity filter for the measurement of lamb wave dispersion

... mode’s phase ve- locity has a unique relationship with ...the phase velocity is often the most useful in experiment design as the wavelength can be easily ascertained as can the ...velocity. ...

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Resonant-to-nonresonant transition in electrostatic ion-cyclotron wave phase velocity

Resonant-to-nonresonant transition in electrostatic ion-cyclotron wave phase velocity

... the transition for one of the eigenmodes, this transition in phase velocity reflects unique aspects of IEDD waves com- pared to previous observations of IEDD waves. The fact that IEDD waves were observed ...

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A flowmeter for measuring the dispersed phase velocity in multiphase flow with non uniform velocity profiles

A flowmeter for measuring the dispersed phase velocity in multiphase flow with non uniform velocity profiles

... Signals and V were each rectified and low pass filtered to produce d.c. output voltages V and V which could be subsequently cross correlated to provide information on the mean dispersed phase velocity (of a ...

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The Property of Phase Velocity in the Cloak Shell

The Property of Phase Velocity in the Cloak Shell

... the phase velocity is uniform, and equal to the speed of light in vacuum3 10 8 ...the phase velocities in the same equiphase surface are not equivalence and non-uniform ...of phase velocities ...

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Turbulent, single-phase velocity distributions for parallel flow in rod bundle assemblies.

Turbulent, single-phase velocity distributions for parallel flow in rod bundle assemblies.

... A knowledge of the velocity distribution in nuclear reactor fuel rod bundles is essential for the accurate prediction of critical heat flux. In this study, a mathematical computer model was developed based upon ...

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Uphill acceleration in a spatially modulated electrostatic field particle accelerator

Uphill acceleration in a spatially modulated electrostatic field particle accelerator

... initial velocity, the excursions of the velocity of the particle come closer to the resonant velocity, breaking the symmetry of the oscillations: the particle spends more time at higher velocities ...

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LDA Study of Particulate Flow in a Channel with Deformed Surface Locations and with Flow Conditioner

LDA Study of Particulate Flow in a Channel with Deformed Surface Locations and with Flow Conditioner

... mean velocity data in fully devel- oped pipe and channel ...the velocity profiles of solid particles and the deviation compared to the liquid phase, velocity fluctuations and the particles ...

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Uphill acceleration in a spatially modulated electrostatic field particle accelerator

Uphill acceleration in a spatially modulated electrostatic field particle accelerator

... the velocity excursions of the particle cross the line of the phase velocity of the wave (in this case, the Lagrangian average diverges, once n goes to zero, while the canonical perturbation theory ...

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Lateral non homogeneities characterization using seismic surface wave

Lateral non homogeneities characterization using seismic surface wave

... measured phase velocities for clay had an average value of 50 m/s, and for the gravelly sand column, the average phase velocity measured was 138 ...

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Towards attosecond high-energy electron bunches : controlling self-injection in laser wakefield accelerators through plasma density modulation

Towards attosecond high-energy electron bunches : controlling self-injection in laser wakefield accelerators through plasma density modulation

... In this Letter, we present a model describing self- injection of ultrashort bunches towards attosecond dura- tion. We show how arbitrary plasma density gradients give rise to changes in the phase velocity ...

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Permanent wave structures on an open two layer fluid

Permanent wave structures on an open two layer fluid

... shown that the nonlinear interaction is resonant when the group velocity of the fast free surface wave mode equals the phase velocity of the slow interface wave mode,.. This property lea[r] ...

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Seismic surface wave nondestructive testing system

Seismic surface wave nondestructive testing system

... The method presented in this research is by obtaining the surface wave phase velocity of two different materials in order to develop the graph of phase velocity versus wavelength... This[r] ...

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Slip and hall current effects on Jeffrey fluid suspension flow in a peristaltic hydromagnetic blood micropump

Slip and hall current effects on Jeffrey fluid suspension flow in a peristaltic hydromagnetic blood micropump

... two- phase fluid-particle (“dusty”) model is utilized to better simulate suspension characteristics (plasma and ...fluid velocity, particulate velocity, fluid/particle fluid and particulate ...

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The Role of Energy Dispersion in the Genesis and Life Cycle of African Easterly Waves.

The Role of Energy Dispersion in the Genesis and Life Cycle of African Easterly Waves.

... westward phase speed and an eastward group ...group velocity is estimated to be eastward at 3.3 ms −1 and the zonal phase velocity is estimated to be westward at ...group velocity is ...

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Kinematics investigation on different types of volleyball serve

Kinematics investigation on different types of volleyball serve

... Approach Phase of three different serve ...approach phase (LSL), mean & SD of float serve ...0.21. Velocity of ball during toss at approach phase (VBT), mean & D of float serve ...ball ...

5

Slug translational velocity for highly viscous oil and gas flows in horizontal pipes

Slug translational velocity for highly viscous oil and gas flows in horizontal pipes

... superficial velocity of oil and superficial gas velocities of ...gas phase gains more kinetic energy owing to increase in superficial gas ...superficial velocity of liquid increases credited to ...

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Energy efficiency in the development of an innovative industrial pressurized solids feeder for pneumatic conveying systems

Energy efficiency in the development of an innovative industrial pressurized solids feeder for pneumatic conveying systems

... dense phase regime, according to the superficial velocity of the gas and the relation between mass flow of the gas and solid phases, besides considering other relevant information as load and transport ...

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Spectroscopic Confirmation of Five Galaxy Clusters at z ~ 1.25 in the 2500 deg^2 SPT-SZ Survey

Spectroscopic Confirmation of Five Galaxy Clusters at z ~ 1.25 in the 2500 deg^2 SPT-SZ Survey

... in velocity-radius phase space by distinguishing passive (orange) from [OII]-emitting (purple) ...galaxy velocity dispersion is ...and velocity segregation between passive and emission-line ...

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