Study on the vibration characteristics of structural of hydrocyclone based on fluid structure interaction

The hydrocyclone of main diameter 28mm with a typical variable diameter pipe structure was selected as the research object, and the interaction of the fluid and the structure was considered on the basis of the hypothesis of small deformation. The two-way fluid structure interaction (FSI) model of the hydrocyclone with variable diameter pipes was presented in this paper, and the related numerical simulation and experimental research was also carried out. The structure vibration characteristics of the structure were analyzed base on the fluid structure interaction, and the vibration characteristics of the structure were obtained. The vibration characteristics of the between the results of numerical simulation and experimental were consistent. Through above analysis showed that the two-way FSI calculation model of hydrocyclone with variable diameter pipe was reasonable. The influence of coupling effect on flow field couldn’t be ignored. The interaction between fluid and structure changed the movement characteristics of the structure, which should be considered in the design and application of hydrocyclone

Advances in Hydraulics and Hydroinformatics Volume 2

This Special Issue reports on recent research trends in hydraulics, hydrodynamics, and hydroinformatics, and their novel applications in practical engineering. The Issue covers a wide range of topics, including open channel flows, sediment transport dynamics, two-phase flows, flow-induced vibration and water quality. The collected papers provide insight into new developments in physical, mathematical, and numerical modelling of important problems in hydraulics and hydroinformatics, and include demonstrations of the application of such models in water resources engineering

Unit Operations of Particulate Solids

Suitable for practicing engineers and engineers in training, this book covers the most important operations involving particulate solids. Through clear explanations of theoretical principles and practical laboratory exercises, the text provides an understanding of the behavior of powders and pulverized systems. It also helps readers develop skills for operating, optimizing, and innovating particle processing technologies and machinery in order to carry out industrial operations. The author explores common bulk solids processing operations, including milling, agglomeration, fluidization, mixing, and solid-fluid separation

Continuation of Crosscutting Technology Development at Cast

This Final Technical Report describes progress made on the sub-projects awarded in the Cooperative Agreement DE-FC26-05NT42457: Continuation of Crosscutting Technology Development at Center for Advanced Separation Technologies (CAST). The final reports for each sub-project are attached in the appendix. Much of the research to be conducted with Cooperative Agreement funds will be longer-term, high-risk, basic research and will be carried out in five broad areas: a) Solid-solid separation b) Solid-liquid separation c) Chemical/Biological Extraction d) Modeling and Control, and e) Environmental Control

Науково-теоретичні основи вібраційних процесів у гетерогенних системах

Дисертацію присвячено вирішенню важливої науково-технічної проблеми інтенсифікації процесів у сепараційних, класифікаційних і грануляційних пристроях шляхом розроблення науково-теоретичних основ процесу вібраційного впливу на гетерогенні системи, моделювання гідродинаміки сепараційних пристроїв, аналізу впливу сполученого конвективного теплообміну і капілярного руху на ефективність сепарації газоконденсатних систем, запобігання негативній дії вторинних процесів і впливу вібрацій на процес утворення гранул монодисперсного складу. Вперше теоретично обгрунтовано підвищення ефективності сепарації за рахунок вібраційно-фільтрувальних принципів розділення; створено науково- теоретичні основи дослідження гідроаеропружної взаємодії сепараційних елементів із газорідинним потоком; теоретично обгрунтовано існування критичного числа Вебера в процесі вторинного подрібнення краплинної рідини; створено науково-теоретичні основи дослідження процесу стікання плівки рідини зі сполученим конвективним теплообміном на охолоджуваних поверхнях контактних елементів; створено наукові основи теорії гратчастих структур для дослідження процесів сепарації та фільтрації. Удосконалено математичну модель визначення питомої поверхні контакту фаз у процесах хімічної технології та математичну модель процесу передавання енергії від механічного збудника коливань до плаву рідини у віброгрануляторі. Досліджено вібраційний вплив на процес диспергування рідини. Набули подальшого розвитку математичні моделі основних і вторинних процесів у сепараторах і віброгрануляторах. Створено теоретичні основи оцінювання параметрів процесу пневмокласифікації сумішей. Одержані закономірності розширено на методи досліджень процесів грануляції, розпилення рідини та вимивання поживних речовин з капсульованих мінеральних добрив.Диссертация посвящена решению важной научно-технической проблемы интенсификации процессов в сепарационных, классификационных и грануляционных устройствах путём разработки научно-теоретических основ процесса вибрационного воздействия на гетерогенные системы, моделирования гидродинамики модульных сепарационных устройств, анализа влияния процессов сопряжённого конвективного теплообмена и нестационарного капиллярного движения жидкости при фильтрации на эффективность процессов сепарации газоконденсатных систем, а также предотвращения негативного воздействия вторичных процессов и влияния вибраций на процесс образования гранул монодисперсного состава. Впервые теоретически обосновано повышение эффективности сепарации за счёт вибрационно-фильтрующих принципов разделения; созданы научно- теоретические основы гидроаэроупругого взаимодействия сепарационных элементов с газожидкостным потоком; теоретически обосновано существование критического числа Вебера в процессе вторичного дробления капельной жидкости; созданы научно-теоретические основы исследования процесса стекания плёнки жидкости с совмещенным конвективным теплообменом на охлаждаемых поверхностях контактных элементов; созданы научные основы теории решётчатых структур для исследования процессов сепарации и фильтрации. Усовершенствована математическая модель определения удельной поверхности контакта фаз в процессах химической технологии и математическая модель процесса передачи энергии от механического возбудителя колебаний к плаву жидкости в виброгрануляторе. Исследовано вибрационное воздействие на процесс диспергирования жидкости. Получили дальнейшее развитие математические модели основных и вторичных процессов в сепараторах и виброгрануляторах. Созданы теоретические основы оценивания параметров процесса пневмо- классификации смесей. Полученные закономерности расширены на методы исследования процессов грануляции, распыления жидкости и вымывания питательных веществ из капсулированных минеральных удобрений.The dissertation is devoted to the solution of an urgent scientific and technical problem of processes intensification in separators, classifiers, and prillers by developing the scientific and theoretical foundations of the process of vibrational impact on heterogeneous systems, modeling the hydrodynamics of modular separation devices, analysis of the influence of joint convective heat transfer processes and non-stationary capillary fluid motion during filtration on the efficiency of separation for gas-condensate systems, as well as prevention of harmful effects of secondary processes and the influence of vibrations on the formation of monodisperse granules. For the first time, an increase in separation efficiency due to vibrational and filtering principles of separation has been theoretically justified. Scientific and theoretical foundations of hydroaeroelastic interaction of separation elements with the gas-liquid flow have been developed. The existence of a critical Weber number in the process of secondary crushing of a dropping liquid has been theoretically substantiated. The scientific and theoretical fundamentals of the liquid film downflow have been developed with combined convective heat transfer on the cooled surfaces of contact elements. The scientific foundations of the theory of ceil structures have been created for the study of separation and filtration processes. A formula for determining the specific interfacial surface in the processes of chemical technology has been clarified, and the mathematical model of the process of energy transfer from a vibrational actuator to a fluid melt in a vibrational priller has been refined. The vibrational impact on the liquid dispersion process has been investigated. The mathematical models of the main and secondary processes in separators and vibrational prillers were further developed. The theoretical foundations for parameter identification of the pneumatic classification process of bulk material have been developed. The proposed approaches have been extended to methods for studying prilling processes, spraying liquids, and nutrient release from encapsulated mineral fertilizers

Electro-kinetic treatment of a quartz-illite tailing

"The purpose of the study is to determine what use electro-kinetics may have to the minefilling process. It also examines what possible use it may have in other mining areas, where stabilising fine soils can improve the mining process. A review of minefilling methods and the general use of electro-kinetics is performed to support this examination."Master of Engineering Scienc

Advances in Computer Science and Engineering

The book Advances in Computer Science and Engineering constitutes the revised selection of 23 chapters written by scientists and researchers from all over the world. The chapters cover topics in the scientific fields of Applied Computing Techniques, Innovations in Mechanical Engineering, Electrical Engineering and Applications and Advances in Applied Modeling

INNOVATIVE DEVELOPMENT OF RESOURCE-SAVING TECHNOLOGIES AND SUSTAINABLE USE OF NATURAL RESOURCES. 3rd INTERNATIONAL SCIENTIFIC AND TECHNICAL CONFERENCE

Місце збереження: https://www.upet.ro/cercetare/manifestari/Krivoi_Rog_2020_Book_of_Abstracts.pd

Towards a mesoscale rheology model for aqueous particulate suspensions

Particulate suspensions are ubiquitous and diverse; pharmaceutical formulations, biological fluids, magma and foodstuffs are just few of numerous examples. In many cases, the flow behaviour (rheology) of the suspension is critical to its function. A key rheological property is viscosity; a measure of a substance’s resistance to flow. This work aims to understand molecular-level mechanisms responsible for determining flow behaviour in moderately dense suspensions; 35% particles by volume (i.e., volume fraction 0.35). The industrial application of interest to this thesis is catalysis; namely, the ‘washcoat’, a key component in the performance of catalytic converters. A typical washcoat formulation is an aqueous suspension, comprising a high surface-area support powder, an active catalyst material, together with organic additives and certain salts used to optimise properties of the washcoat; including its flow behaviour. Of these components, this work investigates ‘salt-specific effects’; i.e. the influence of differing salt-types. Investigation is conducted at molecular and macroscopic resolution via simulations and experiments, respectively. The research approach probes the constituents of a suspension: the aqueous phase, the particle-aqueous phase interface, and particle interactions. Molecular dynamics simulations are employed as the foundation of this analysis, with experiments - rheology, nuclear magnetic resonance and dynamic light scattering - utilised alongside. A final set of rheology experiments is conducted on particulate suspensions of 35% volume fraction, in pure water and the aqueous salt solutions of interest. At all stages of analysis, results suggest that macroscopic behaviours are a cumulative manifestation of phenomena at molecular resolution. However, such phenomena are varied; the challenge lies in identifying which mechanisms are relevant to the behaviour of interest, how they work together, and how they manifest cumulatively. Towards a mesoscale rheology model for aqueous particulate suspensions, results are discussed in terms of input for such a model, which would predict rheology as a function of particle loading, ionic strength and possibly other factors, in future work