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2015-9-1 · The higher value of mixing efficiency or signal-to-noise ratio achieved at the outlet cross-section means that better mixing performance is obtained in our TZM: where N is the total sampling points within the outlet cross-section, c i is the molar concentration at sampling point i , is the molar concentration of a complete mixture, and σ max ...
Get Price2018-10-1 · The shape of the tank plays an important role in the hydrodynamic performance of the agitation. A 3D simulation was done using CFD calculation code (CFX16.0). The study was carried out for large Reynolds number: 104–2.105. Navier–Stokes equations governing the phenomenon are solved by a method of discretization finite volume. The turbulence model used is the k–ε standard type. Our …
Get Price2014-9-12 · In terms of mechanical behavior, all three cases showed a similar performance in the rubbery region, whereas the impact of dispersion was more pronounced in the glassy region. In fact, the trend was opposite to the dielectric permittivity where nanoscale dispersion resulted in a lower storage modulus likely due to the lower effective mechanical ...
Get Price2017-3-8 · In this paper, the key structure of a diesel engine combustion chamber is parameterized, and the influence of individual structural parameter on dynamic characteristics and emissions of the engine is simulated and analyzed by computational fluid dynamics (CFD) software avl-fire.
Get Price2010-8-30 · The bowl geometry and dimensions, such as the pip region, bowl lip area, and toroidal radius, are all known to have an effect on the in-cylinder mixing and combustion processes. Based on the idea of enhancing diffusion combustion at the later stage of the combustion period, three different bowl geometries, namely, bowl 1 (baseline), bowl 2, and ...
Get PriceBut here air fuel ratio mixture cannot mix properly. To avoid this we make piston geometry changes. The main object of this project is to investigate the performance technique to enhance the air swirl to achieve betterment in engine performance and emission in a direct injection (DI) single cylinder diesel engine.
Get Price2017-10-7 · The paper presents the numerical simulation results of the surface roughness influence on gas-dynamic processes inside flow parts of a supersonic ejector. These simulations are performed using two commercial CFD solvers (Star- CCM+ and Fluent). The results are compared to each other and verified by a full-scale experiment in terms of global flow parameters (the entrainment ratio: the ratio ...
Get PriceCentrifugal pump delivery head and flow rate drop effectively during the pumping of viscous fluids. Several methods and correlations have been developed to predict reduction rate in centrifugal pump performance when handling viscous fluids, but their results are not in very good agreement with each other. In this study, a common industrial low specific speed pump, which is extensively used in ...
Get Price2020-10-23 · In order to explore the variation of crumb rubber modified asphalt (CR) before and after aging at the micro- and nanoscales, the molecular dynamics simulation and atomic force microscopy (AFM) asphalt microstructure scanning were carried out on CR before and after aging. The molecular dynamics energy, radial distribution function (RDF), surface microstructure image, roughness, and …
Get Price2021-6-2 · Cycling performance of the [email protected]/[email protected] 2, [email protected]/[email protected] and [email protected]/AB cells were evaluated. Figure 3j displays the cycling performance of the three cells at 0.5 C rate. The specific capacity of the [email protected]/[email protected] 2 cell stabilizes at 1150 mA h g −1 after 100 cycles at 0.5 C.
Get Price2018-8-30 · Within this paper, a parametric CFD study is conducted to determine the influence of three main geometry parameters of the EIS ejector design on the ejector’s performance. The parameters, namely the injection nozzle spacing, the mixing duct length, and the ejector nozzle height, are introduced in the context of the overall EIS design and ...
Get Price2002-3-4 · A Numerical Study of the Influence of Diesel Nozzle Geometry on the Inner Cavitating Flow. 2002-01-0215. In order to analyze the influence of nozzle geometry on the internal flow characteristics of a Diesel injector, a CFD analysis of the flow through various nozzle geometries has been carried out with a commercial code.
Get PriceThe present study experimentally demonstrates the influence of the dimensionless stoke L on the performance characteristics of a synthetic jet fan under Reynolds number Re = 1800 and the same fan ...
Get Price2021-4-26 · This study analyzes the combustion performance of a syngas-fueled homogenous charge compression ignition (HCCI) engine using a toroidal piston (baseline piston), square bowl, and flat piston shape, at low, medium, and high loads, with a constant compression ratio of 17.1.
Get Price2016-5-2 · Shervin Alaei, Mohammad Haghighi, Javad Toghiani, Behgam Rahmani Vahid, Magnetic and reusable MgO/MgFe 2 O 4 nanocatalyst for biodiesel production from sunflower oil: Influence of fuel ratio in combustion synthesis on catalytic properties and performance, Industrial Crops and Products, 10.1016/j.indcrop.2018.03.015, 117, (322-332), (2018).
Get Price2014-10-8 · Abstract In this work, the fluid dynamics within a membrane‐less microchannel fuel cell is analyzed computationally. The membrane‐less design is a result of the laminar nature of the fluid flow at ...
Get Price2020-12-8 · Then, the influence of metamaterials on the core devices of single photon LiDAR was discussed, including laser, scanning device, optical lens and single photon detector. As a result, we get the conclusion that through effective light field modulation, the metamaterials technology might push the performance innovation of single photon …
Get Price2020-11-26 · Ye, L., Weng, K., Xu, J. et al. Unraveling the influence of non-fullerene acceptor molecular packing on photovoltaic performance of organic solar cells. Nat Commun 11, 6005 (2020). https://doi.org ...
Get Price2020-1-23 · The presence of cavitation in the oil film seriously affects the bearing lubrication performance and bearing capacity. Now the research of this phenomenon mostly focuses on the model of Reynolds equation (R-E equation) or Navier-Stokes equation (N-S), the influence of the two computation models is less analyzed, and the effect of noncondensable gas (NCG) mass fraction on the bearing ...
Get Price2021-1-14 · Influence of solvent treatment on the composition of Li 6 PS 5 Cl. a) XRD of the untreated Li 6 PS 5 Cl (pristine, red) and after treatment with ACN (green), toluene (blue), THF (orange), EtOH (yellow), and MeOH (pink). Black lines in (a) indicate peak positions of Li 6 PS 5 Cl from Kraft et al. [] The diffractogram is displayed with sqrt intensity to highlight the low intensity reflections.
Get Price2020-10-13 · Swirling flow is widely used in gas turbine burners to promote fuel/air mixing uniformity and to stabilize lean premixed flames. In this study, numerical and experimental methods are utilized to investigate the effects of burner geometry on fuel/air mixing and combustion performance and to optimize the burner geometry.
Get Price2013-12-24 · A simple geometry jet pump was designed, developed and tested. The experiments show that we should ... mixing chamber length of 7.25 Dmix had proven superi- ority over the other two mixing chambers length of 6.75 and 7.86 Dmix. Mixing throat length ranging from 3.5 to ... Study of the Different Factors That Influence Jet Pump Performance Author:
Get PriceThe government, aerospace, and transportation industries are deeply invested in developing new technologies to improve the performance and maneuverability of current and future aircraft while reducing aerodynamic noise and environmental impact. One of the key pathways to meet these goals is through aerodynamic flow control, which can involve suppressing or inducing separation, transition and ...
Get Price2013-7-25 · The objectives of this research are to (1) discuss the importance of using unsteady flow simulations in the design of high performance exhaust systems, (2) describe the use of stepped-runners to provide performance gains, and (3) discuss the influence of runner step geometry and the number of steps on gas exchange.
Get PriceInfluence of inflow Mach number and outflow pressure on inlet performance was also analyzed. ... Whereas a variable-geometry inlet maximizes performance, it adds weight and complexity to the ...
Get Price2020-1-13 · These geometry deviations would change the flow field near the blade tip, which will influence the thermal and aerodynamic performance. Thus, it is important to quantitatively investigate the effects of squealer tip geometry deviation on the aerothermal performance.
Get Price2018-8-30 · The hydrodynamic pressure and heat generation in an oil film acting on a bearing pad produce significant mechanical and thermal deformations that change the oil film geometry (clearance and preload) to largely affect the bearing performance, static and dynamic.
Get Price2019-7-8 · By applying static and dynamic magnetic fields during assembly, we create high-performance energy storage devices and demonstrate that cleverly guided micro-Origami can make a …
Get Price2017-7-24 · High-performance electrocatalysts for the oxygen reduction reaction (ORR) typically use platinum (Pt), however its high cost is a hindrance to commercial scale up. Here, the authors report a …
Get Price2019-3-16 · Unlike conventional cultivation systems, liquid mixing in floating photobioreactors (PBRs) is solely induced by their hydrodynamic movement in response to waves, and this movement is affected by the wave conditions (wave height and wave period), the PBR configuration and the culture depth. However, to the best of our knowledge, a practical study of the hydrodynamic movements of PBRs has …
Get Price2015-9-1 · The higher value of mixing efficiency or signal-to-noise ratio achieved at the outlet cross-section means that better mixing performance is obtained in our TZM: where N is the total sampling points within the outlet cross-section, c i is the molar concentration at sampling point i , is the molar concentration of a complete mixture, and σ max ...
Get Price2018-10-1 · The shape of the tank plays an important role in the hydrodynamic performance of the agitation. A 3D simulation was done using CFD calculation code (CFX16.0). The study was carried out for large Reynolds number: 104–2.105. Navier–Stokes equations governing the phenomenon are solved by a method of discretization finite volume. The turbulence model used is the k–ε standard type. Our …
Get Price2014-9-12 · In terms of mechanical behavior, all three cases showed a similar performance in the rubbery region, whereas the impact of dispersion was more pronounced in the glassy region. In fact, the trend was opposite to the dielectric permittivity where nanoscale dispersion resulted in a lower storage modulus likely due to the lower effective mechanical ...
Get Price2017-3-8 · In this paper, the key structure of a diesel engine combustion chamber is parameterized, and the influence of individual structural parameter on dynamic characteristics and emissions of the engine is simulated and analyzed by computational fluid dynamics (CFD) software avl-fire.
Get Price2010-8-30 · The bowl geometry and dimensions, such as the pip region, bowl lip area, and toroidal radius, are all known to have an effect on the in-cylinder mixing and combustion processes. Based on the idea of enhancing diffusion combustion at the later stage of the combustion period, three different bowl geometries, namely, bowl 1 (baseline), bowl 2, and ...
Get PriceBut here air fuel ratio mixture cannot mix properly. To avoid this we make piston geometry changes. The main object of this project is to investigate the performance technique to enhance the air swirl to achieve betterment in engine performance and emission in a direct injection (DI) single cylinder diesel engine.
Get Price2017-10-7 · The paper presents the numerical simulation results of the surface roughness influence on gas-dynamic processes inside flow parts of a supersonic ejector. These simulations are performed using two commercial CFD solvers (Star- CCM+ and Fluent). The results are compared to each other and verified by a full-scale experiment in terms of global flow parameters (the entrainment ratio: the ratio ...
Get PriceCentrifugal pump delivery head and flow rate drop effectively during the pumping of viscous fluids. Several methods and correlations have been developed to predict reduction rate in centrifugal pump performance when handling viscous fluids, but their results are not in very good agreement with each other. In this study, a common industrial low specific speed pump, which is extensively used in ...
Get Price2020-10-23 · In order to explore the variation of crumb rubber modified asphalt (CR) before and after aging at the micro- and nanoscales, the molecular dynamics simulation and atomic force microscopy (AFM) asphalt microstructure scanning were carried out on CR before and after aging. The molecular dynamics energy, radial distribution function (RDF), surface microstructure image, roughness, and …
Get Price2021-6-2 · Cycling performance of the [email protected]/[email protected] 2, [email protected]/[email protected] and [email protected]/AB cells were evaluated. Figure 3j displays the cycling performance of the three cells at 0.5 C rate. The specific capacity of the [email protected]/[email protected] 2 cell stabilizes at 1150 mA h g −1 after 100 cycles at 0.5 C.
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