396 research outputs found

    Damone And Slaten

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    Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Damone and Slaten - Vic Damone and his Daughter Andrea Damone greet guests at the reception following their performances.

    Predicting apparent slip at liquid-liquid interfaces without an interface slip condition

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    We show that if we include a density-dependent viscosity into the Navier-Stokes equations then we can describe, naturally, the velocity profile in the interfacial region, as we transition from one fluid to another. This requires knowledge of the density distribution (for instance, via Molecular Dynamics [MD] simulations, a diffuse-interface approach, or Density Functional Theory) everywhere in the fluids, even at liquid-liquid interfaces where regions of rapid density variations are possible due to molecular interactions. We therefore do not need an artificial interface condition that describes the apparent velocity slip. If the results are compared with the computations obtained from MD simulations, we find an almost perfect agreement. The main contribution of this work is to provide a simple way to account for the apparent slip at liquid-liquid interfaces without relying upon an additional boundary condition, which needs to be calculated separately using MD simulations. Examples are provided involving two immiscible fluids of varying average density ratios, undergoing simple Couette and Poisseuille flows

    Transport Properties of Water-Triethylamine Fluid Mixtures Calculated Using Molecular Dynamics

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    The knowledge of transport properties is crucial to design new devices in electronic and biotechnological industries. Due to the fast growth of the processor speed, molecular simulations have become a robust method to calculate the transport properties. In this work, we show numerical methods such as Green-Kubo formalism to estimate transport properties applied to real liquids. We focus on the study of shear viscosity and thermal conductivity of a water (H2O) and triethylamine (C6H15N) solution which has a potential application for heat exchange inside electronic circuits. The radial distribution function and hydrogen-bond analysis have been made at a broad range of temperatures and mole fractions using equilibrium molecular dynamics, and comparisons with experimental data in the literature have been reported

    Thermodynamic modelling and simulation of geothermal power plants: case studies and environmental impact

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    The emissions associated with Geothermal power plant (GTPP) due to geothermal fluids represents a compelling challenge addressed in the last decades. The on-line measuring of pollutants generated by GTPP might result in a complicated task to handle. Simulation of GTPP has become an excellent tool to monitor and control the emission of pollutants. In the present work, the pollutant emissions of GTPP of Hellisheidi (Island), Chiusdino, and Castelnuovo (Italy) are modelled and developed with Unisim Design R480 using well understood thermodynamical models implemented in OLI. The presence of brine in the thermodynamical models has been taken into account. Carbon dioxide, methane, and hydrogen sulfide are the chemical pollutants considered for the process simulation. The AQ framework model in OLI is being used for binary mixtures and non-condensable gas. Furthermore, for liquid mixtures containing more than two components, the MSE-SRK Thermodynamic model is desirable depending on the original geothermal fluid source. The simulation process outcome agrees with experimental data for pressure between 30 and 100 bar within 5% deviation. A systematic study of the spatial distribution of the emissions has been made for the area surrounding the GTPP. Furthermore, an economic evaluation overview has been performed to highlight the equipment needed for maintenance and tool substitution

    Il decoro in architettura. Le riggiole napoletane

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    To the knowledge of architecture becomes a valid area of research, also for Fixed protection Policies and original recovery of Image Building, analyzing coatings and decorations What characterized Especially the noble building. It ranks in this research conducted on the use of riggiole Neapolitan with in the Cutinelli-Rendina Palace a Campomaggiore in Basilicata

    “New life for defence military architecture the case of the sighting towers in Basilicata”,

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    Since from the Roman Empire possession, it was felt the need to defend and to guard the territory from foreign incursions, especially in peripherical areas or coastal ones. For this reason, numerous towers were built. they form just a part of a larger communication system, in which each of them was in line with the next one with which communicated through a system "telegraph" or "semaphoric", through a complex system of bright reflections using fires, smoke or mirrors and sometimes even with a warning signal (bells). The research, which focuses on a portion of the Ionian Sea coastal area (Basilicata - Italy), through a study of the defensive system of sighting, it aims to highlight, beside the obvious functional system, the very close characteristics of shape, architectural and typological types, that connect these towers between them and assimilate them to the typical forms of military architecture (regular shapes, "closed" on the outside and massive). Through a technological and constructional analysis, the study aims to propose a "new life" for these architectures, that have lost their primary function and, now, were abandoned and in a evident state of decay, as a ruins. In fact, the fundamental elements of conservation debate consists in the opposition between the material and image conservation; the balance between these two terms is a third element, the “value” of the building. The most current guidelines suggest an "integrated conservation", as the combined result of the techniques interventions and user needs: the goal is to ensure "continuity of life" of this heritage through a "suitable use". It is also a necessary condition for the conservation intervention that exceeds the concept of protection to become an important way to build the future, as part of the social, economic and cultural territory in which that building are located
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