Numerical investigation of the effect of the injection angle on the spray structures of an air-blast atomizer

Sheng, Changdong; Xing, Yuming; Liu, Xin; Zhao, Liang

doi:10.1108/ec-03-2020-0175

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…The spray drying tower, during the experiment, is relatively closed and is considered a "black box". The phenomena in the tower are challenging to observe, and obtaining specific information about its flow field is difficult [195,196]. In recent years, the computer hardware configuration has been constantly upgraded, and various hydrodynamic calculation models have been constantly improved.…”

Section: Spray-drying (Sd)mentioning

confidence: 99%

The Application of Metal–Organic Frameworks in Water Treatment and Their Large-Scale Preparation: A Review

Xie,

Zhang,

Wang

et al. 2024

Materials

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Over the last few decades, there has been a growing discourse surrounding environmental and health issues stemming from drinking water and the discharge of effluents into the environment. The rapid advancement of various sewage treatment methodologies has prompted a thorough exploration of promising materials to capitalize on their benefits. Metal–organic frameworks (MOFs), as porous materials, have garnered considerable attention from researchers in recent years. These materials boast exceptional properties: unparalleled porosity, expansive specific surface areas, unique electronic characteristics including semi-conductivity, and a versatile affinity for organic molecules. These attributes have fueled a spike in research activity. This paper reviews the current MOF-based wastewater removal technologies, including separation, catalysis, and related pollutant monitoring methods, and briefly introduces the basic mechanism of some methods. The scale production problems faced by MOF in water treatment applications are evaluated, and two pioneering methods for MOF mass production are highlighted. In closing, we propose targeted recommendations and future perspectives to navigate the challenges of MOF implementation in water purification, enhancing the efficiency of material synthesis for environmental stewardship.

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Section: Spray-drying (Sd)mentioning

confidence: 99%

The Application of Metal–Organic Frameworks in Water Treatment and Their Large-Scale Preparation: A Review

Xie,

Zhang,

Wang

et al. 2024

Materials

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“…However, simplified models (turbulence neglected) may lead to inaccuracies in low-density ambient, as commonly seen in SI engines. Chen et al (2020) numerically investigated the effect of injection angle on the spray structure and droplet gas mixing using the Eularian-Lagrangian framework. The KH-RT model is used for the secondary breakup of droplets and helps understand the mixing processes.…”

Section: Overview Of Research Studiesmentioning

confidence: 99%

Spray Breakup Modelling for Internal Combustion Engines

Sonawane

Ágarwal

2021

Energy, Environment, and Sustainability

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Rising concerns about emissions have led to a significant tightening of pollution norms for internal combustion (IC) engines. High-pressure direct injection (HPDI) technologies have been adopted for most on-road and off-road engines to meet the global demand for clean and efficient powertrains. Higher fuel efficiency, superior combustion, and lower pollutant formation are the characteristic features of the HPDI. The introduction of alternative fuels, modified combustion geometry, and novel combustion concepts demand continuous improvement in fuel injection equipment (FIE). The complicated physics of HPDI and its modelling is an active area of research among researchers and engine developers. Fuel-injected in the combustion chamber breaks up into a spray of fine droplets, evaporating, mixing with ambient air, and forming a fuel-air mixture, greatly affecting the engine combustion and emission characteristics. Therefore, it is necessary to study the fuel breakup phenomenon under different engine conditions comprehensively. Detailed understanding of the spray breakup phenomenon is unavailable due to difficulties in optical access, highly dense sprays, complex processes, etc. However, recent advances in measurement technologies and computational tools have made it feasible for researchers. This chapter attempts to capture widely used spray breakup models and research studies involving IC engines. Fundamental spray breakup and atomization have been discussed at the beginning of the chapter. Subsequently, the basis and fundamentals of popular spray models have been discussed. Finally, the authors have comprehensively discussed the key contributions in sprays to provide an overall idea about the spray models and their application for IC engine studies. Various spray breakup models such as Blob Model, Linear Instability Sheet Atomization (LISA) Model, Kelvin-Helmholtz (KH) Model, Kelvin-Helmholtz-Aerodynamics Cavitation Turbulence (KH-ACT) Model, RT (Rayleigh-Taylor) Model, Hybrid/Modified Kelvin-Helmholtz Rayleigh-Taylor (KH-RT) Model, Taylor Analogy Breakup (TAB) Model, Enhanced TAB breakup model (ETAB) are discussed briefly in this chapter. Towards the end, a summary of the contents of the chapter is provided, which covers highlights and significant observations.

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“…Our investigation into these structures began with computations in a large number of examples of the number of connected components of the spaces [Ch20]. These computations led us to the following theorem.…”

Section: Introductionmentioning

confidence: 99%

Circle-valued angle structures and obstruction theory

Hodgson¹,

Kricker²,

Siejakowski³

2023

Preprint

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We study spaces of circle-valued angle structures, introduced by Feng Luo, on ideal triangulations of 3-manifolds. We prove that the connected components of these spaces are enumerated by certain cohomology groups of the 3-manifold with Z 2 -coefficients. Our main theorem shows that this establishes a geometrically natural bijection between the connected components of the spaces of circle-valued angle structures and the obstruction classes to lifting boundary-parabolic P SL(2, C)-representations of the fundamental group of the 3manifold to boundary-unipotent representations into SL(2, C). In particular, these connected components have topological and algebraic significance independent of the ideal triangulations chosen to construct them. The motivation and main application of this study is to understand the domain of the state-integral defining the meromorphic 3D-index of Garoufalidis and Kashaev, necessary in order to classify the boundary-parabolic representations contributing to its asymptotics.

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Numerical investigation of the effect of the injection angle on the spray structures of an air-blast atomizer

Cited by 3 publications

References 27 publications

The Application of Metal–Organic Frameworks in Water Treatment and Their Large-Scale Preparation: A Review

The Application of Metal–Organic Frameworks in Water Treatment and Their Large-Scale Preparation: A Review

Spray Breakup Modelling for Internal Combustion Engines

Circle-valued angle structures and obstruction theory

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