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Advanced Search Results For "PHASE velocity"

1 - 10 of 5,074 results for
 "PHASE velocity"
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Propagation of Pore Pressure and Stress in Saturated Porous Media Based on a Darcy-Brinkman Formulation.

Publication Type: Academic Journal

Source(s): Geofluids. 12/27/2021, p1-12. 12p. 2 Charts, 6 Graphs.

Abstract: Propagation of pore pressure and stress in water-saturated elastic porous media is theoretically investigated when considering the Darcy-Brinkman law. The wave mode, phase velocity, phase lag, damping factor, and characteristic frequency are found from...

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Experimental Investigation of a Shape-Optimized Staggered Double-Vane Slow-Wave Structure for Terahertz Traveling-Wave Tubes.

Publication Type: Academic Journal

Source(s): IEEE Transactions on Electron Devices. Aug2022, Vol. 69 Issue 8, p4632-4637. 6p.

Abstract: Enormous concerns focus on the high-power and wide bandwidth traveling-wave tube (TWT) for its outstanding performance. In this article, a shape-optimized staggered double-vane slow-wave structure (SWS) for terahertz (THz) sheet beam TWT is proposed. T...

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Influence of LPRE on the size‐dependent phase velocity of sandwich beam including FG porous and smart nanocomposite layers.

Publication Type: Academic Journal

Source(s): Polymer Composites. Oct2022, Vol. 43 Issue 10, p7390-7402. 13p.

Abstract: This article evaluates the wave velocity of a leptadenia pyrotechnica rheological elastomer (LPRE) microbeam surrounded by micro piezoelectric and porosity of functionally graded materials' (FGMs) layers. Different models of graphene nano plates (GPLs)...

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Two-dimensional Simulation of Droplet Splitting in Multi-Furcating Microchannel.

Publication Type: Academic Journal

Source(s): Fluid Dynamics. Oct2022, Vol. 57 Issue 5, p672-685. 14p.

Abstract: Multiple splitting of droplets through a multi-furcating microchannel, consisting of five outlets, is investigated using 2D simulation. For all five multi-furcating branches, a width ratio of 0.25 (branch channel width/main channel width) is used since...

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A compact dual‐band coupled‐microstrip‐slotline coupler with arbitrary power division ratios.

Publication Type: Academic Journal

Source(s): Microwave & Optical Technology Letters. Oct2022, Vol. 64 Issue 10, p1726-1731. 6p.

Authors:

Abstract: In this paper, a novel dual‐band coupler with arbitrary power division ratios using coupled‐microstrip‐slotlines (CMSLs) is proposed. It consists of only four CMSL sections and occupies a small circuit area due to the centric arrangement of the excitat...

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Appraising scattering theories for polycrystals of any symmetry using finite elements.

Publication Type: Academic Journal

Source(s): Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences. 9/5/2022, Vol. 380 Issue 2231, p1-29. 29p.

Abstract: This paper uses three-dimensional grain-scale finite-element (FE) simulations to appraise the classical scattering theory of plane longitudinal wave propagation in untextured polycrystals with statistically equiaxed grains belonging to the seven crysta...

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The reflection and transmission of waves at interface between two nonlocal orthotropic thermoelastic halfspaces.

Publication Type: Academic Journal

Source(s): Archives of Mechanics. 2022, Vol. 74 Issue 5, p373-389. 17p.

Authors:

Abstract: The present article deals with the propagation of inhomogeneous waves in an orthotropic medium based on Eringen's nonlocal thermoelasticity. For chosen directions of propagation and a real finite inhomogeneity parameter, a complex slowness vector is sp...

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Interaction between Mack second mode and radiation mode in high-enthalpy boundary layers.

Publication Type: Academic Journal

Source(s): Physics of Fluids. Sep2022, Vol. 34 Issue 9, p1-15. 15p.

Abstract: Instabilities of high-enthalpy flat-plate boundary layers in thermochemical equilibrium conditions are studied using a linear stability theory (LST) and parabolized stability equations. A supersonic radiation mode is found to be unstable at the downstr...

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Fluidized bed in gravitational shelf dryers: optimization calculation.

Publication Type: Academic Journal

Source(s): Bulletin of the Polish Academy of Sciences: Technical Sciences. 2021, Vol. 69 Issue 3, p1-9. 9p.

Abstract: The article deals with studying the hydrodynamic characteristics of the fluidized bed in gravitation shelf dryers. The algorithm to calculate hydrodynamic characteristics of the fluidized bed in the dryer's workspace is described. Every block of the al...

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Simultaneous Inversion for Surface Wave Phase Velocity and Earthquake Centroid Parameters: Methodology and Application.

Publication Type: Academic Journal

Source(s): Journal of Geophysical Research. Solid Earth. Sep2022, Vol. 127 Issue 9, p1-30. 30p.

Abstract: Both the regional earthquake surface wave and seismic ambient noise provide important constraints on the Earth's structure, and yet no study satisfactorily combined them for the best imaging of subsurface seismic structure. In this study, we address th...

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