The Experts below are selected from a list of 933 Experts worldwide ranked by ideXlab platform
Kama Huang - One of the best experts on this subject based on the ideXlab platform.
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dynamic analysis of a continuous flow microwave assisted Screw Propeller system for biodiesel production
Chemical Engineering Science, 2019Co-Authors: Huacheng Zhu, Yang Yang, Kama Huang, G Vijaya S RaghavanAbstract:Abstract In order to overcome the apparent limitations of large-scale microwave processing, a microwave heating system with a Screw Propeller was utilized for biodiesel synthesis. To elucidate the heating dynamics and reaction process in the reactor, a comprehensive physics-based model was developed. A step-by-step algorithm based on implicit function, level set methods, and Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery was proposed to compute the microwave heating process with chemical reaction and stirring. Material properties applied in the simulation were expressed as bivariate functions of the reaction solution’s component and temperature. The temperature and reactant concentration of the microwave reactor outlet were measured and compared to simulation results to validate the simulation model. By using the proposed model, the heating process with different rotating speeds, material composition (Teflon and metal), pitch, and blade widths of the Screw Propeller and inlet velocities were also calculated to determine their effect on the temperature distribution of the reactor.
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dynamic analysis of continuous flow microwave reactor with a Screw Propeller
Applied Thermal Engineering, 2017Co-Authors: Huacheng Zhu, Tushar Gulati, Yong Yang, Yinhong Liao, Yang Yang, Kama HuangAbstract:Abstract To solve nonuniform heating when microwave energy is applied in a continuous-flow applicator, a microwave heating system with a Screw Propeller is designed. By introducing the implicit function and level set methods, the electromagnetic heat source input into the temperature field is updated with the rotation of the Screw Propeller. Combined with Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery, the temperature distribution in the heating process is obtained. Water is taken as the sample in the experiment to verify the computational model. By using the proposed model, we also calculate the temperature distribution of two other commonly used liquids (ethylene glycol and glycerol). To analyze the effect of a Screw Propeller on heating uniformity, the temperature distribution of the cases with a Screw Propeller is quantitatively compared to that of the cases without a Screw Propeller.
Huacheng Zhu - One of the best experts on this subject based on the ideXlab platform.
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dynamic analysis of a continuous flow microwave assisted Screw Propeller system for biodiesel production
Chemical Engineering Science, 2019Co-Authors: Huacheng Zhu, Yang Yang, Kama Huang, G Vijaya S RaghavanAbstract:Abstract In order to overcome the apparent limitations of large-scale microwave processing, a microwave heating system with a Screw Propeller was utilized for biodiesel synthesis. To elucidate the heating dynamics and reaction process in the reactor, a comprehensive physics-based model was developed. A step-by-step algorithm based on implicit function, level set methods, and Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery was proposed to compute the microwave heating process with chemical reaction and stirring. Material properties applied in the simulation were expressed as bivariate functions of the reaction solution’s component and temperature. The temperature and reactant concentration of the microwave reactor outlet were measured and compared to simulation results to validate the simulation model. By using the proposed model, the heating process with different rotating speeds, material composition (Teflon and metal), pitch, and blade widths of the Screw Propeller and inlet velocities were also calculated to determine their effect on the temperature distribution of the reactor.
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dynamic analysis of continuous flow microwave reactor with a Screw Propeller
Applied Thermal Engineering, 2017Co-Authors: Huacheng Zhu, Tushar Gulati, Yong Yang, Yinhong Liao, Yang Yang, Kama HuangAbstract:Abstract To solve nonuniform heating when microwave energy is applied in a continuous-flow applicator, a microwave heating system with a Screw Propeller is designed. By introducing the implicit function and level set methods, the electromagnetic heat source input into the temperature field is updated with the rotation of the Screw Propeller. Combined with Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery, the temperature distribution in the heating process is obtained. Water is taken as the sample in the experiment to verify the computational model. By using the proposed model, we also calculate the temperature distribution of two other commonly used liquids (ethylene glycol and glycerol). To analyze the effect of a Screw Propeller on heating uniformity, the temperature distribution of the cases with a Screw Propeller is quantitatively compared to that of the cases without a Screw Propeller.
Yang Yang - One of the best experts on this subject based on the ideXlab platform.
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dynamic analysis of a continuous flow microwave assisted Screw Propeller system for biodiesel production
Chemical Engineering Science, 2019Co-Authors: Huacheng Zhu, Yang Yang, Kama Huang, G Vijaya S RaghavanAbstract:Abstract In order to overcome the apparent limitations of large-scale microwave processing, a microwave heating system with a Screw Propeller was utilized for biodiesel synthesis. To elucidate the heating dynamics and reaction process in the reactor, a comprehensive physics-based model was developed. A step-by-step algorithm based on implicit function, level set methods, and Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery was proposed to compute the microwave heating process with chemical reaction and stirring. Material properties applied in the simulation were expressed as bivariate functions of the reaction solution’s component and temperature. The temperature and reactant concentration of the microwave reactor outlet were measured and compared to simulation results to validate the simulation model. By using the proposed model, the heating process with different rotating speeds, material composition (Teflon and metal), pitch, and blade widths of the Screw Propeller and inlet velocities were also calculated to determine their effect on the temperature distribution of the reactor.
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dynamic analysis of continuous flow microwave reactor with a Screw Propeller
Applied Thermal Engineering, 2017Co-Authors: Huacheng Zhu, Tushar Gulati, Yong Yang, Yinhong Liao, Yang Yang, Kama HuangAbstract:Abstract To solve nonuniform heating when microwave energy is applied in a continuous-flow applicator, a microwave heating system with a Screw Propeller is designed. By introducing the implicit function and level set methods, the electromagnetic heat source input into the temperature field is updated with the rotation of the Screw Propeller. Combined with Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery, the temperature distribution in the heating process is obtained. Water is taken as the sample in the experiment to verify the computational model. By using the proposed model, we also calculate the temperature distribution of two other commonly used liquids (ethylene glycol and glycerol). To analyze the effect of a Screw Propeller on heating uniformity, the temperature distribution of the cases with a Screw Propeller is quantitatively compared to that of the cases without a Screw Propeller.
G Vijaya S Raghavan - One of the best experts on this subject based on the ideXlab platform.
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dynamic analysis of a continuous flow microwave assisted Screw Propeller system for biodiesel production
Chemical Engineering Science, 2019Co-Authors: Huacheng Zhu, Yang Yang, Kama Huang, G Vijaya S RaghavanAbstract:Abstract In order to overcome the apparent limitations of large-scale microwave processing, a microwave heating system with a Screw Propeller was utilized for biodiesel synthesis. To elucidate the heating dynamics and reaction process in the reactor, a comprehensive physics-based model was developed. A step-by-step algorithm based on implicit function, level set methods, and Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery was proposed to compute the microwave heating process with chemical reaction and stirring. Material properties applied in the simulation were expressed as bivariate functions of the reaction solution’s component and temperature. The temperature and reactant concentration of the microwave reactor outlet were measured and compared to simulation results to validate the simulation model. By using the proposed model, the heating process with different rotating speeds, material composition (Teflon and metal), pitch, and blade widths of the Screw Propeller and inlet velocities were also calculated to determine their effect on the temperature distribution of the reactor.
Korneliuk, Olha M. - One of the best experts on this subject based on the ideXlab platform.
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Расчёт гидродинамических характеристик гребного винта при работе в свободной воде в CFD-пакете Flow Vision
2016Co-Authors: Корнелюк, О. Н., Korneliuk, Olha M.Abstract:Корнелюк, О. Н. Расчёт гидродинамических характеристик гребного винта при работе в свободной воде в CFD-пакете Flow Vision = Calculation of the hydrodynamic characteristics of the Screw Propeller when working in the free water in CFD-package Flow Vision / О. Н. Корнелюк // Зб. наук. пр. НУК. – Миколаїв : НУК, 2016. – № 2 (464). – С. 34–39.Описано способи постановки проекту моделювання роботи гребного гвинта у вільній воді у CFD-пакеті Flow Vision. Виконано оцінку ефективності способів постановки проекту моделювання роботи гребного гвинта у вільній воді в CFD-пакеті Flow Vision. Виконано порівняння результатів розрахунку гідродинамічних характеристик гребних гвинтів, отриманих під час проведення чисельних і модельних експериментів при різних способах постановки проекту.The ways to evaluate the effectiveness of the designed Propeller as one of the ways to improve the characteristics of modern ships are discussed. The efficiency of the use of CFD-modeling based on 3D-model of the Propeller along with model experiments is substantiated. The aim is to study ways of raising project in CFD-Flow Vision for simulating the operation of the Propeller in open water, to evaluate their effectiveness on the basis of comparison and verification of the results of numerical modeling and experiments. Methods for setting projects in CFD-package Flow Vision described. A series of experiments with different methods of setting the project are conducted. Comparison of the results of calculation of hydrodynamic characteristics of the Propeller, obtained during the modeling and numerical experiments, is performed. The results obtained can be used in the design of the Propeller and to assess its efficiency. The results allow to draw conclusions about the features and effectiveness of the use of a method of setting the project simulation of Propeller in open water in CFD-Flow Vision package when calculating its hydrodynamic characteristics.Описаны способы постановки проекта моделирования работы гребного винта в свободной воде в CFD-пакете Flow Vision. Выполнена оценка эффективности способов постановки проекта моделирования работы гребного винта в свободной воде в CFD-пакете Flow Vision. Выполнено сравнение результатов расчёта гидродинамических характеристик гребных винтов, полученных при проведении численных и модельных экспериментов при различных способах постановки проекта
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Особливості моделювання роботи гребного гвинта в середовищі FLOW VISION
'Admiral Makarov National University of Shipbuilding', 2015Co-Authors: Korneliuk, Olha M.Abstract:The need of carrying out numerical experiments has been discussed when studying the operation of designed Screw Propellers in free water. It will allow reducing the number of model experiments, the costs and the design terms. The influence of geometrical and hydrodynamic characteristics of the Screw Propeller on its efficiency is discussed. The aim of the studies is to determine experimentally the time step (the integration step over the time of the equations of the convective and diffusive transfer), which would correspond to the best convergence of the calculation of the Screw Propeller in free water in the CFD–package Flow Vision environment. The influence of the set time step on the results of the calculation of the hydrodynamics of the three–blade Screw Propeller is experimentally studied. The ratio of the optimum size of the time step and various flow rates is determined. The correctly set time step allows modeling a problem in an optimum time period with the acceptable convergence of the calculation.Разработаны рекомендации по выбору шага интегрирования при решении в среде CFD-пакета Flow Vision задачи моделирования работы гребного винта в свободной воде. Исследовано влияние задаваемого метода расчета и способа выбора шага интегрирования на результаты расчета. Приведены результаты численных экспериментов.Розроблено рекомендації щодо вибору кроку інтегрування при розв’язанні у середовищі CFD-пакета Flow Vision задачі моделювання роботи гребного гвинта у вільній воді. Дослыджено вплив методу розрахунку ы способу вибору кроку інтегрування на результати розрахунку. Наведено результати числових експериментів
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Особенности моделирования работы гребного винта в свободной воде в среде Flow Vision
2015Co-Authors: Корнелюк, О. Н., Korneliuk, Olha M.Abstract:Корнелюк, О. Н. Особенности моделирования работы гребного винта в свободной воде в среде Flow Vision = Specific features of the simulation of Propeller operation Іn free water in the Flow Vision environment/ О. Н. Корнелюк // Зб. наук. пр. НУК. – Миколаїв : НУК, 2015. – № 1 (457). – С. 21–26.Розроблено рекомендації щодо вибору кроку інтегрування при розв'язанні у середовищі CFD-пакета Flow Vision задачі моделювання роботи гребного гвинта у вільній воді. Досліджено вплив методу розрахунку i способу вибору кроку інтегрування на результати розрахунку. Наведено результати числових експериментів.The need of carrying out numerical experiments has been discussed when studying the operation of designed Screw Propellers in free water. It will allow reducing the number of model experiments, the costs and the design terms. The influence of geometrical and hydrodynamic characteristics of the Screw Propeller on its efficiency is discussed. The aim of the studies is to determine experimentally the time step (the integration step over the time of the equations of the convective and diffusive transfer), which would correspond to the best convergence of the calculation of the Screw Propeller in free water in the CFD-package Flow Vision environment. The influence of the set time step on the results of the calculation of the hydrodynamics of the three-blade Screw Propeller is experimentally studied. The ratio of the optimum size of the time step and various flow rates is determined. The correctly set time step allows modeling a problem in an optimum time period with the acceptable convergence of the calculation.Разработаны рекомендации по выбору шага интегрирования при решении в среде CFD-пакета Flow Vision задачи моделирования работы гребного винта в свободной воде. Исследовано влияние задавае- мого метода расчета и способа выбора шага интегрирования на результаты расчета. Приведены результаты численных экспериментов
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Вибір оптимальних розрахункових параметрів при моделюванні роботи гребного гвинта у вільній воді у середовищі Flow Vision
'Admiral Makarov National University of Shipbuilding', 2014Co-Authors: Korneliuk, Olha M.Abstract:The relevance of introduction of the new means and technologies for expeditious definition of rational Screw Propeller elements at the earliest design stages of the ship is discussed. The question of influence of set calculation parameters in the Flow Vision project on results of calculation is discussed. The aim of researches is the development of methodology which would allow reducing the number of numerical experiments at design of the concrete Screw Propeller at the expense of recommendations about the choice of the optimum calculation parameters in Flow Vision medium. The turbulence model; the grid dimension; the sizes of the calculation area; the step on time; the templates of adaptation of the grid are experimentally studied. The received results prove the relevance of creation of similar techniques that allows reducing the number of numerical experiments and the terms of design of object consequently, at the solution of the same tasks for which this technique is developed.Разработана методика выбора оптимальных параметров, задаваемых в программе Flow Vision, при моделировании работы гребного винта в свободной воде. Приведены рекомендации ее практического использования. Розроблено методику вибору оптимальних параметрів, що задаються у програмі Flow Vision при моделюванні роботи гребного гвинта у вільній воді. Наведено результати її практичного використання
