Numerical and experimental study of oscillatory behavior of liquid surface agitated by high-speed gas jet

Adib, Mohammad; Ehteram, Mohammad Ali; Tabrizi, Hassan Basirat

doi:10.1016/j.apm.2018.05.031

Cited by 12 publications

(5 citation statements)

References 42 publications

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“…Для исследования динамического взаимодействия многофазных систем часто используют численное моделирование происходящих процессов [22,24,[26][27][28]. Такой подход позволяет изучить изменение модулей и направлений векторов скоростей потоков во всех точках модели рассматриваемой двухфазной системы, однако результаты численного моделирования, в свою очередь, требуют обобщения информации, полученной об исследуемой системе.…”

Section: теоретический анализunclassified

“…Наклонное воздействие газовой струи на поверхность вязкой жидкости позволяет генерировать стабильные релаксационные колебания [21]. На поверхности невязкой жидкости (Re > 100) колебания носят хаотический характер [2,5,6,10,18,22]. Частота колебаний на поверхности вязкой жидкости в значительной степени определяется вязкостью, и такая зависимость может быть положена в основу бесконтактного метода измерений этой величины.…”

Section: Introductionunclassified

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Исследование Реакции Поверхности Жидкости На Импульсное Воздействие Наклонной Газовой Струи При Малых Числах Рэйнольдса

Савенков¹,

Сычёв²

2022

Журнал Технической Физики

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A mathematical description of the motion of a cavity on the liquid surface under an oblique action of a gas jet is obtained using the well-known expressions for the movement of a gas bubble in a liquid. The boundary of the viscous drag force domination over the form drag force is determined. The impingement of the gas jet on the liquid surface is considered as a dynamic object of the automatic control theory. It is found that the dynamic properties of the two-phase system "gas jet - liquid" are described by the integrator equations. Using a specially designed setup, the transient response of the "gas jet - liquid" system were experimentally obtained for the aerodynamic action at angles of 20º and 50º to the surfaces of liquids with the viscosities of 0.71 and 26.1 Pa•s (Reynolds number Re < 2). The research results are necessary for the analysis of the non-contact aerodynamic method of liquid viscosity measurements.

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Section: теоретический анализunclassified

Section: Introductionunclassified

Исследование Реакции Поверхности Жидкости На Импульсное Воздействие Наклонной Газовой Струи При Малых Числах Рэйнольдса

Савенков¹,

Сычёв²

2022

Журнал Технической Физики

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“…The results showed that the 3D VOF-LES model had better agreement with the experimental data with regard to capturing the vortex and describing the bubble behavior and surface fluctuation. Adib et al [20] studied the oscillatory phenomenon of the liquid surface in a non-submerged high-speed gas injection system using a VOF multiphase model coupled with a k−ω SST turbulence model. A cold-water model was implemented to verify the interface deformation and cavity depth.…”

Section: Of 13mentioning

confidence: 99%

An Experimental and Simulated Study on Gas-Liquid Flow and Mixing Behavior in an ISASMELT Furnace

Zhao

Yin

et al. 2019

Metals

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In this study, a water-model experiment and numerical simulation were carried out in a pilot ISASMELT furnace to study the factors affecting mixing time. The experimental results were compared to the simulation results to test the accuracy of the latter. To study the internal factors that affect the mixing time, the turbulent viscosity and flow field were calculated using simulation. In addition, following previous research, external factors that influence the mixing time including the depth of the submerged lance, lance diameter, gas flow rate, and the presence of a swirler were studied to investigate their effect on the flow regime. The results indicated that the mixing time is controlled by the turbulent viscosity and velocity vector. In addition, it was found that the lance diameter should not exceed 3.55 cm to maintain sufficient energy for stirring the bath. Finally, the optimal gas flow rate that offers the best mixing efficiency was found to be 50 Nm3/h.

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“…A study conducted by Reynolds [10] simulated a lab scale arc impinging the liquid bath of two immiscible phases for different values of the current and arc gap. Adib et al [11] studied the effect of a high-speed air jet impinging the liquid surface using a VOF formulation and measured the interface deformation and cavity depth. Most of the works reported in the literature have studied one aspect of the DC-EAF but very few of them have introduced the full coupling of the plasma arc and liquid metal interaction.…”

Section: Introductionmentioning

confidence: 99%

Toward a Simplified Arc Impingement Model in a Direct-Current Electric Arc Furnace

Al-Nasser

Kharicha

Barati

et al. 2021

Metals

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A 2D axisymmetric two-phase model was developed to study the effect of an arc impingement on the liquid metal inside an electric arc furnace. In addition to the arc flow dynamics, the model covered the heat transfer and magneto hydrodynamics of the arc and the liquid metal. Through a parametric study, three different parameters were considered to predict the most important factors affecting the arc and overall behaviour of the process: the arc gap, the density of the gas, and the total electric current. Understanding the effect of these parameters can show the key factors altering the arc dynamics. The study showed that the total applied current was the most important parameter that influenced the impingement depth and mixing of the liquid metal. The depth of the impingement and strength of the mixing of the liquid bath were directly proportional to the current applied in the furnace. The initial arc gap distance was found to be crucial for sustaining a continuous and stable arc. The value of the gas density was very important for the velocity profile; however, it had no significant effect on the impingement depth. This showed that a constant density could be used instead of a varying gas density with temperature to increase the computational efficiency. The study assessed the effects of the aforementioned factors on the arc impingement depth, velocity magnitude, and arc stability. The conclusions acquired and challenges are also presented.

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Numerical and experimental study of oscillatory behavior of liquid surface agitated by high-speed gas jet

Cited by 12 publications

References 42 publications

Исследование Реакции Поверхности Жидкости На Импульсное Воздействие Наклонной Газовой Струи При Малых Числах Рэйнольдса

Исследование Реакции Поверхности Жидкости На Импульсное Воздействие Наклонной Газовой Струи При Малых Числах Рэйнольдса

An Experimental and Simulated Study on Gas-Liquid Flow and Mixing Behavior in an ISASMELT Furnace

Toward a Simplified Arc Impingement Model in a Direct-Current Electric Arc Furnace

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