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  • Influence of geometrical factors on steam ejector ...

    2009-11-1 · A number of factors influence the performance of an ejector. In this work, three geometrical factors – the area ratio between the nozzle and constant area section (r A), nozzle exit position (NXP) and constant area section length (L m) – were considered.The theoretical analysis was carried out by a CFD model of a steam ejector using FLUENT.

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  • Experimental investigation of heat transfer and pressure ...

    2010-9-1 · A set of experiments were performed in order to evaluate the influence of tube layout and fin geometry on heat transfer and pressure drop performance in serrated-fin tubes for high temperature heat recovery applications. Based on the experimental results, the following conclusions were drawn:

    Get Price
  • Characterising the influence of bitumen emulsion on ...

    2014-4-24 · Performance of an unstable mixture with inadequate volumetric properties, caused by either too low or too high bitumen emulsion content, would not be the clear result of the emulsion properties. Inappropriate mixture composition could also affect compacting in …

    Get Price
  • On the crystalline structure of orthorhombic SrRuO3: A ...

    2016-11-1 · However, a factor that has a greater influence on the performance of hybrids is the amount of exact exchange incorporated through the mixing parameter a. As we have already found that PBEsol and WC demonstrate similar values of MAREs and HSE-type correction is not essential, a comparison between HSEsol and mB1WC allows to take a look at the ...

    Get Price
  • The optimal diffusion experiment - ScienceDirect

    2016-10-2 · Thus, one optimal diffusion experiment in a semi-free geometry would yield the same accuracy as 4 optimal experiments using free diffusion conditions. In case of the open cell, the additional positive influence of the wall on the ζ-efficiency can be observed just …

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  • Interface study of the fluids in passive micromixers by ...

    2020-10-27 · In the present study, six different geometries, all of which share the same mixer part, which is a microchannel with the dimension of (100times 175times 2000) μm were simulated to investigate the role of the entrance geometry of micromixers in creating vortices and their effects on the quality of mixing. As specified in Fig. 1, the entrances in all simulated geometries are non-aligned so ...

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  • (PDF) EFFECT OF GROOVES GEOMETRY ON …

    2001-12-18 · This paper deals with an experimental investigation into the influence of a vaned recess casing treatment on the performance of an industrial-type axial-flow fan with a hub-tip ratio of 0.4.

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  • Influence of combustion-preheating vitiation on ...

    2015-12-12 · Vitiation of the test flow with combustion products is inherent in combustion wind tunnels, and its effect on experimental results needs to be clarified. In this study, the influence of air vitiation on the startability and performance of a hypersonic inlet is investigated through two-dimensional (2D) numerical simulation. The study examines the vitiation effects introduced by carbon dioxide ...

    Get Price
  • Introducing a new specimen shape to assess the fatigue ...

    2018-3-10 · A mixing ratio of 1 part binder to 1.5 parts of filler or fines by weight (m/m) is chosen to obtain a ratio almost similar to the ratio used in AC. In preliminary tests mixing ratios of up to 1:2.5 have been tested where rations from 1:2.0 show a decreasing repeatability. This can either be accounted to bad mixing quality or the grain shape.

    Get Price
  • Effects of Mach Number on the Performance of a ...

    For all conditions examined in this study, as a significant result, the fixed geometry of the designed DSI showed acceptable performance in the ranges of supersonic Mach numbers tested: M∞=1.65 ...

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  • Acoustic Modes in a Plenum Downstream of a Multitube …

    2021-8-31 · The operation of a multitube pulse detonation combustor (PDC) evokes undesirable pressure fluctuations for a turbine downstream of the combustor. Pressure measurements in a downstream annular plenum reveal distinct pressure fluctuations. Although pressure peaks due to the shock waves emanating from the PDC tubes have been investigated in previous studies, pressure oscillations …

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  • Finite Element Modeling of a Viscous Fluid Flowing …

    2020-10-19 · Appendix A: Gear Geometry. The gears of the gear pump consist of a number of teeth N. Symmetric teeth are used and thus only the geometry of half a tooth is defined. As shown in Figure A.1, the geometry of half a tooth is built from four parts: tip (blue), profile (green), fillet (red), and root (yellow).

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  • SciELO - Brasil - Effect of temperature on the mechanical ...

    To determine the influence of temperature on the mechanical strength of the PM, flexural and compressive tests were performed at different temperature levels. The test temperatures range from room temperature to 90 ºC. To perform this research, a universal testing machine with an attached thermostatic chamber was used.

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  • On the Feasibility of Interoperable Schemes in Hand …

    2012-2-1 · The influence of quality in interoperable schemes for signature verification was discussed in . The authors state that performance is primarily affected when using more reliable sensors for training and therefore it is crucial to have enrolment models that are generated with high quality data.

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  • LA-UR-99-6286 AWE Experiments on Laser-Driven Mix in ...

    1999-12-2 · A variation in susceptibility to mix was achieved by changing the Atwood number of the pusher-foam interface by altering the material (and thus density) of the final section of the pusher. For the 'low-mix' target a chlorinated plastic layer was chosen (density ~ 1.4g/cc), and for the 'high mix' target a gold layer (density = 19.3g/cc).

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  • Sensors

    2017-2-28 · Sensors, an international, peer-reviewed Open Access journal. Dear Colleagues, This Special Issue is intended to provide an up-to-date and comprehensive view on the state-of-the-art of sensors science and technology in Italy.

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  • A REVIEW ON THE STUDY OF HISTORICAL STRUCTURES …

    2020-7-23 · lenges are related to different aspects like geometry, construction materials, boundary conditions, exist-ing damage and previous repairs. Therefore, there is a need to update (calibrate) the historical construc-tion FE model against possible modeling inaccura-cies and uncertainties. The process of …

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  • Abstract: Modeling of Residence Time Distribution in ...

    2014-11-20 · Mathematical models characterizing individual unit operation performance as a function of CPPs (e.g., screw speed, residence time) and CMPs (e.g., particle size distribution) have been developed. In addition, multi-unit processes can be characterized with respect to the temporal-space location of particles in the system [ 3 ].

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  • Increasing the performance of an anion-exchange …

    2021-6-9 · It has been technologically challenging to create an anion-exchange membrane water electrolyzer (AEMWE) that can operate efficiently without liquid electrolytes, that is, in pure water. Prior improvements in AEMWE have been limited to the development of membranes and catalysts. Here, we report an alternative solution to increase the AEMWE performance from a different perspective by …

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  • Validation of the Subchannel Code SUBCHANFLOW Using …

    SUBCHANFLOW is a computer code to analyze thermal-hydraulic phenomena in the core of pressurized water reactors, boiling water reactors, and innovative reactors operated with gas or liquid metal as coolant. As part of the ongoing assessment efforts, the code has been validated by using experimental data from the NUPEC PWR Subchannel and Bundle Tests (PSBT).

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  • Influence of geometrical factors on steam ejector ...

    2009-11-1 · A number of factors influence the performance of an ejector. In this work, three geometrical factors – the area ratio between the nozzle and constant area section (r A), nozzle exit position (NXP) and constant area section length (L m) – were considered.The theoretical analysis was carried out by a CFD model of a steam ejector using FLUENT.

    Get Price
  • Experimental investigation of heat transfer and pressure ...

    2010-9-1 · A set of experiments were performed in order to evaluate the influence of tube layout and fin geometry on heat transfer and pressure drop performance in serrated-fin tubes for high temperature heat recovery applications. Based on the experimental results, the following conclusions were drawn:

    Get Price
  • Characterising the influence of bitumen emulsion on ...

    2014-4-24 · Performance of an unstable mixture with inadequate volumetric properties, caused by either too low or too high bitumen emulsion content, would not be the clear result of the emulsion properties. Inappropriate mixture composition could also affect compacting in …

    Get Price
  • On the crystalline structure of orthorhombic SrRuO3: A ...

    2016-11-1 · However, a factor that has a greater influence on the performance of hybrids is the amount of exact exchange incorporated through the mixing parameter a. As we have already found that PBEsol and WC demonstrate similar values of MAREs and HSE-type correction is not essential, a comparison between HSEsol and mB1WC allows to take a look at the ...

    Get Price
  • The optimal diffusion experiment - ScienceDirect

    2016-10-2 · Thus, one optimal diffusion experiment in a semi-free geometry would yield the same accuracy as 4 optimal experiments using free diffusion conditions. In case of the open cell, the additional positive influence of the wall on the ζ-efficiency can be observed just …

    Get Price
  • Interface study of the fluids in passive micromixers by ...

    2020-10-27 · In the present study, six different geometries, all of which share the same mixer part, which is a microchannel with the dimension of (100times 175times 2000) μm were simulated to investigate the role of the entrance geometry of micromixers in creating vortices and their effects on the quality of mixing. As specified in Fig. 1, the entrances in all simulated geometries are non-aligned so ...

    Get Price
  • (PDF) EFFECT OF GROOVES GEOMETRY ON …

    2001-12-18 · This paper deals with an experimental investigation into the influence of a vaned recess casing treatment on the performance of an industrial-type axial-flow fan with a hub-tip ratio of 0.4.

    Get Price
  • Influence of combustion-preheating vitiation on ...

    2015-12-12 · Vitiation of the test flow with combustion products is inherent in combustion wind tunnels, and its effect on experimental results needs to be clarified. In this study, the influence of air vitiation on the startability and performance of a hypersonic inlet is investigated through two-dimensional (2D) numerical simulation. The study examines the vitiation effects introduced by carbon dioxide ...

    Get Price
  • Introducing a new specimen shape to assess the fatigue ...

    2018-3-10 · A mixing ratio of 1 part binder to 1.5 parts of filler or fines by weight (m/m) is chosen to obtain a ratio almost similar to the ratio used in AC. In preliminary tests mixing ratios of up to 1:2.5 have been tested where rations from 1:2.0 show a decreasing repeatability. This can either be accounted to bad mixing quality or the grain shape.

    Get Price
  • Effects of Mach Number on the Performance of a ...

    For all conditions examined in this study, as a significant result, the fixed geometry of the designed DSI showed acceptable performance in the ranges of supersonic Mach numbers tested: M∞=1.65 ...

    Get Price
  • Influence of geometrical factors on steam ejector ...

    2009-11-1 · A number of factors influence the performance of an ejector. In this work, three geometrical factors – the area ratio between the nozzle and constant area section (r A), nozzle exit position (NXP) and constant area section length (L m) – were considered.The theoretical analysis was carried out by a CFD model of a steam ejector using FLUENT.

    Get Price
  • Experimental investigation of heat transfer and pressure ...

    2010-9-1 · A set of experiments were performed in order to evaluate the influence of tube layout and fin geometry on heat transfer and pressure drop performance in serrated-fin tubes for high temperature heat recovery applications. Based on the experimental results, the following conclusions were drawn:

    Get Price
  • Characterising the influence of bitumen emulsion on ...

    2014-4-24 · Performance of an unstable mixture with inadequate volumetric properties, caused by either too low or too high bitumen emulsion content, would not be the clear result of the emulsion properties. Inappropriate mixture composition could also affect compacting in …

    Get Price
  • On the crystalline structure of orthorhombic SrRuO3: A ...

    2016-11-1 · However, a factor that has a greater influence on the performance of hybrids is the amount of exact exchange incorporated through the mixing parameter a. As we have already found that PBEsol and WC demonstrate similar values of MAREs and HSE-type correction is not essential, a comparison between HSEsol and mB1WC allows to take a look at the ...

    Get Price
  • The optimal diffusion experiment - ScienceDirect

    2016-10-2 · Thus, one optimal diffusion experiment in a semi-free geometry would yield the same accuracy as 4 optimal experiments using free diffusion conditions. In case of the open cell, the additional positive influence of the wall on the ζ-efficiency can be observed just …

    Get Price
  • Interface study of the fluids in passive micromixers by ...

    2020-10-27 · In the present study, six different geometries, all of which share the same mixer part, which is a microchannel with the dimension of (100times 175times 2000) μm were simulated to investigate the role of the entrance geometry of micromixers in creating vortices and their effects on the quality of mixing. As specified in Fig. 1, the entrances in all simulated geometries are non-aligned so ...

    Get Price
  • (PDF) EFFECT OF GROOVES GEOMETRY ON …

    2001-12-18 · This paper deals with an experimental investigation into the influence of a vaned recess casing treatment on the performance of an industrial-type axial-flow fan with a hub-tip ratio of 0.4.

    Get Price
  • Influence of combustion-preheating vitiation on ...

    2015-12-12 · Vitiation of the test flow with combustion products is inherent in combustion wind tunnels, and its effect on experimental results needs to be clarified. In this study, the influence of air vitiation on the startability and performance of a hypersonic inlet is investigated through two-dimensional (2D) numerical simulation. The study examines the vitiation effects introduced by carbon dioxide ...

    Get Price
  • Introducing a new specimen shape to assess the fatigue ...

    2018-3-10 · A mixing ratio of 1 part binder to 1.5 parts of filler or fines by weight (m/m) is chosen to obtain a ratio almost similar to the ratio used in AC. In preliminary tests mixing ratios of up to 1:2.5 have been tested where rations from 1:2.0 show a decreasing repeatability. This can either be accounted to bad mixing quality or the grain shape.

    Get Price
  • Effects of Mach Number on the Performance of a ...

    For all conditions examined in this study, as a significant result, the fixed geometry of the designed DSI showed acceptable performance in the ranges of supersonic Mach numbers tested: M∞=1.65 ...

    Get Price
  • Frontiers

    2019-9-13 · Mixing efficiency affects both performance and scale-up in a bioreactor. Homogenization (mixing) is characterized by the mixing quality to be achieved and the mixing time necessary (Kraume, 2004). The mixing quality represents a pre-selected value (for example, macro-mixing, fine mixing, or mixing up to molecular dimensions) (Kaiser et al ...

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  • Model-based scale-up and reactor design for solvent-free ...

    The mixer was chosen because of its moderate pressure drop and high mixing performance in the applied flow velocity range. 35–37 Two different 1/16 in stainless steel capillaries (i.d. 1 mm) were used as residence time modules. For short residence times (16–189 s), a 2 m long capillary reactor (reaction volume 1.57 mL) was connected to the ...

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  • Development and Qualification of a Scalable, Disposable ...

    2013-4-1 · During the past decade, single-use bioreactors have become widely accepted for use in cell culture process development and clinical manufacturing. Their key benefits over stainless steel bioreactors are flexibility, cost, and time savings associated with the reduction of cross-contamination risks (1). Here, we describe our approach to development and qualification of the Biostat STR single …

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  • Simultaneous Prediction of Cosolvent Influence on …

    2020-4-18 · Understanding and quantification of cosolvent influences on enzyme-catalyzed reactions are driven by a twofold interest. On the one hand, cosolvents can simulate the cellular environment for deeper understanding of in cellulo reaction conditions. On the other hand, cosolvents are applied in biotechnology to tune yield and kinetics of reactions. Further, cosolvents are even present inherently ...

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  • The impact of irradiance on optimal and cellular nitrogen ...

    2016-6-2 · Introduction. Since Redfield published data on plankton and deep water nitrogen (N) : phosphorus (P) ratios, suggesting a biological control of the deep ocean stoichiometry, phytoplankton has often been assumed to contain N and P in a molar ratio of 16 : 1 (the 'Redfield N : P').This ratio is widely used as a reference to differentiate between N and P limitation of phytoplankton production ...

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  • Electronic RTDs

    The Influence of Somatic Investment on the Patterns of Reproduction in POECILIA LATIPINNA (Pisces: POECILIIDAE), Jeffrey D. Wetherington. PDF. Pressure Drop Across a Restriction of Annular Geometry, Farshid Yarizadeh. PDF. A Computer Model to Determine Location of Stormwater Management Practices, Alan D. Zahm. Theses/Dissertations from 1981 PDF

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  • Privateer 161 Enduro Bike (Shimano SLX/XT) – Privateer ...

    Mixing our passion and ideas with Ali's experience, the recipe for a rider focused bike was created. Whilst working closely with Matt to ensure it's everything he needs to race at the highest level, he provided us with incredibly useful feedback; ranging from geometry to small (but important) details such as cable routing to clear race plates.

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  • Integral Test Facility PKL: Experimental PWR Accident ...

    2011-8-15 · Investigations of the thermal-hydraulic behavior of pressurized water reactors under accident conditions have been carried out in the PKL test facility at AREVA NP in Erlangen, Germany for many years. The PKL facility models the entire primary side and significant parts of the secondary side of a pressurized water reactor (PWR) at a height scale of 1 : 1.

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  • (PDF) On large scale turbomachinery computations

    On large scale turbomachinery computations. overshoots in the MUSCL reconstruction are avoided by applying the Van Albeda limiter. A standard central discretization is used for the viscous fluxes. A second order implicit time integration scheme is used to approximate the time derivative.

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  • Sample : Lysate Ratio for Endotoxins Testing - Why is it ...

    2021-5-31 · Possessing a 1:1 sample to lysate ratio is of great importance. The Sievers Eclipse BET platform from SUEZ allows for accurate and precise determination and verification of this important ratio.

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