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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 14 of 14 for “"volute"”.
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Experimental determination of volute effects on the stability of low specific speed centrifugal pumps
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Theoretical investigation of volute effect on low-flow dynamic stability in a centrifugal pump
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Modeling flow characteristics of a low specific-speed centrifugal pump with different volute shapes
… thesis assesses the effects of changing a pump's volute casing geometry on the volute's internal flow characteristics. All analysis is performed on a low-specific-speed, radial flow centrifugal pump. 2D flow models from literature and CFD are analyzed and compared to experimental data. With …
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The volute in architecture and architectural decoration with particular reference to its introduction into the Ionic order
… checksum: 910b249b4beec47e7ab768910c8f966f (MD5) voluteinarchitec00newc.pdf: 5765070 bytes, checksum: b6d66fe7c582a527df2730f4ca358c19 (MD5) Previous issue date: 1918
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Adaptive Hydraulics for Improved Centrifugal Pump Efficiency
… This research challenged the assumption that volute geometry must be static and showed that by enabling a variable volute geometry greater efficiency can be obtained over a wider operating region. The thesis presents the design and demonstration of a controllable, precision, variable volute …
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Area-schedule based design of high pressure recovery radial diffusion systems
… the vaned diffuser. The vaned diffuser and volute designs are assessed numerically through RANS calculations and validated by full-scale compressor experiments. The investigations revel that it is mainly the diffuser area ratio and effective non-dimensional diffusion length that set diffuser …
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A CFD Investigation of the Hydrodynamic Characteristics of Fluid Flow through an Impeller and Multi-Objective Design Optimization of a Centrifugal Pump
… blade is obtained by using TurboGrid system. The volute of the centrifugal pump is built in ANSYS geometry, and an unstructured mesh is accomplished by using a very fine mesh. Afterwards, Computational Fluid Dynamics (CFD) is applied in ANSYS-CFX to set output parameters of objectives and …
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Aerothermodynamics and operation of turbine system under unsteady pulsating flow
… The turbine system consists of a scroll-volute followed by a turbine wheel and then a diffuser. The assessment includes calculating unsteady three-dimensional flow in the turbine system followed by in-depth interrogation complemented with flow modeling. The key findings are (1) The flow …
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The role of impeller outflow conditions on the performance and stability of airfoil vaned radial diffusers
… unsteadiness, and ts a 0.86 scale diffuser and volute. In both rigs, the time-mean impeller outflow is mapped across a diffuser pitch using miniaturized traversing probes developed for the purpose. Diffuser performance is well correlated to the average impeller outflow angle when the metric used …
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One-Dimensional Radial Flow Turbomachinery Performance Modeling
… Only cases with a vaneless diffuser or volute have been included in the analysis to avoid any possible impeller-diffuser interactions. From the database, models for all of the TEIS and Two-Zone parameters have been derived using basic regression techniques. Three different models are …
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An Investigation into the impact of the spanwise flow field at rotor inlet on the performance of mixed flow turbines
… techniques. The second approach was multi-scroll volutes, which had asymmetric limbs on the hub and shroud sides of the passage. These were examined with a numerical analysis. Both approaches provided an effective means to create a favourable spanwise flow distribution at the rotor inlet. This …
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DEMOCRAZIA E DIRITTI UMANI NELL'ORGANIZZAZIONE DEGLI STATI AMERICANI
… il ruolo svolto dalle Conferenze Panamericane, volute da Simón de Bolívar, che hanno permesso di mantenere un sottile legame tra tutti gli Stati del Subcontinente Americano, sebbene non sia mai giunto all'ideale della Lega degli Stati Americani che avrebbe dovuto garantire l'unità politica e …
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The Iron Age II city gates in Palestine: The textual and archaeological evidence
… from the city gate complexes, including volute capitals, high places, thresholds, drain channels, benches or shelves, basins or vats, monumental stelae, standing stones, stone altars, reliefs, orthostats, sculptures, silos or pits, oil presses, arrowheads, scales or weights, favissae , …
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Il sistema europeo comune di asilo: la protezione internazionale dello straniero in Europa
… e al c.d. approccio hotspot. Queste due azioni volute dal Consiglio europeo e dalla Commissione europea sono state analizzate quali espressioni di una nuova tendenza europea che si caratterizza per l incapacità di adottare norme giuridiche seguendo le procedure legislative previste dai Trattati …