Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"interfacial waves"”.
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Nonlinear Interfacial Waves in Inviscid Gas-Liquid Flows
… is concerned with understanding and modeling the interfacial waves that exist in stratified gas-liquid flows. The motivation is the central role that interfacial waves are believed to play in flow regime transitions as well as their effect in critical design parameters.
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Fully nonlinear interfacial waves in a bounded two-fluid system
… to develop a theory for fully nonlinear interfacial waves allowing amplitudes as large as the channel thickness. The result is a set of evolution equations for the interfacial shape and the velocity jump across the interface. Linear stability analysis reveals that capillary forces …
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Surface and interfacial waves and deformations in pre-stressed elastic materials
… of pre-stress on the propagation of surface and interfacial waves in elastic materials. Following a review of the classical theory of Rayleigh and Stoneley waves for linear elastic materials we consider first the propagation of infinitesimal surface waves on a half-space of incompressible …
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A study of interfacial waves and heat transfer for turbulent condensation in vertical tubes
… flow occurred in the annular-mist regime. The interfacial wave velocities, frequencies, and amplitudes were experimentally determined using needle contact probes. From these data on wave characteristics a statistical wave form was obtained. The liquid mass flow occurring in identifiable waves …
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Mechanistic study of slug formation and evolution in high-viscosity-liquid/High-density-gas multiphase flows in channels/pipes
… the initial growth and nonlinear evolution of interfacial waves leading to slugging in concurrent high-viscosity (laminar) liquid/high-density(turbulent) gas two-phase flows in horizontal channels/pipes. We first develop a Fully-Coupled Immersed Flow (FCIF) solver for the three-dimensional …
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Interaction of waves in a two-layer density stratified fluid
… of nonlinear resonant interaction of surface-interfacial waves with a rippled bottom in a two-layer density stratified fluid in two dimensions is investigated via perturbation analyses and direct simulation. Three classes of Bragg resonances are found to exist if the nonlinear interactions up …
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Renewable energy supply and storage: liquid metal battery stability
… different from that of a Hall-Heroult cell. The interfacial waves at the top and bottom interfaces can be coupled either symmetrically or antisymmetrically depending on the initial conditions. The presence of the second deformable interface has a stabilizing effect. The study covers two LMB …
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The dynamics and kinematics of the coastal boundary layer off Long Island
… The "coastal effect", in the form of surface and interfacial waves which propagate away from the coast, modifies the "pure" inertial response as it would exist far from shore. The kinematics of this process is such that a 180° phase difference between currents in the two layers is characteristic …
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A mechanistic investigation of nonlinear interfacial instabilities leading to slug formation in multiphase flows
… of some nonlinear mechanisms governing the interfacial stability and nonlinear evolution of stratified two-phase flows through horizontal channels and pipes. The resulting investigation identifies a strong nonlinear energy transfer mechanism which extracts energy generated by an interfacial …
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Effects of flow orientation on condensation in tubes
<p>This study explores the interfacial and heat transfer characteristics of annular condensation of FC-72 in vertical downflow, vertical upflow and horizontal flow as well as the effects of channel orientation on flow condensation. Two separate condensation test modules are employed, one for …