生悬浮系统文献：用声悬浮的方法测量表面张力

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2024-09-23 10:35 1043阅读次数

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• 生悬浮系统文献：用声悬浮的方法测量表面张力

  A new method utilizing an acoustic levitation technique is introduced to measure liquid surface tension. During the measurement a small drop of test liquid is acoustically levitated in air, and its static shape is gauged with the variation of its altitude location. The experimental data are matched with theoretical calculations giving an estimation of liquid surface tension......[详细]

  2024-09-23 10:35

  期刊论文

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• 声悬浮文献

  The modelling of evaporation in which droplet geometry deviates from sphericity, i.e., oblate spheroid, when the droplet experiences high dynamic stresses or a high Weber number, is important in many applications. The validation of such theoretical models is often difficult to achieve experimentally. The acoustic levitation technique was used to investigate the evaporation of an oblate spheroid for different liquids. Evaporation of oblate droplet at constant aspect ratio is realized......[详细]

  2020-08-28 12:04

  期刊论文

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• 生悬浮文献：悬浮小动物的声学方法

  Ultrasonic levitation of some small living animals such as ant, ladybug, and young fish has been achieved with a single-axis acoustic levitator. The vitality of ant and ladybug is not evidently influenced during the acoustic levitation, whereas that of the young fish is reduced because of the inadequacy of water supply. Numerical analysis shows that the sound pressures on the ladybug’s surface almost reach the incident pressure amplitude p0 due to sound scattering. 详情请见文章内容。[详细]

  2020-09-08 13:29

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• 声悬浮系统文献之声悬浮聚并

  The contactless coalescence of a droplet is of paramount importance for physical and industrial applications. This paper describes a coalescence method to be used mid-air via acoustic levitation using an ultrasonic phased array system. Acoustic levitation using ultrasonic phased arrays provides promising lab-on-a-drop applications, such as transportation, coalescence, mixing, separation, evaporation, and extraction in a continuous operation. The mechanism of droplet coalescence in mid-air......[详细]

  2024-09-23 18:03

  期刊论文

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• 生悬浮文献：声悬浮液滴的聚结动力学

  The contactless coalescence of a droplet is of paramount importance for physical and industrial applications. This paper describes a coalescence method to be used mid-air via acoustic levitation using an ultrasonic phased array system. Acoustic levitation using ultrasonic phased arrays provides promising lab-on-a-drop applications, such as transportation, coalescence, mixing, separation, evaporation, and extraction in a continuous operation. 详情请见文章内容[详细]

  2024-09-20 22:50

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• 声悬浮系统文献：高激励频率下近场声悬浮物体的慢动力学

  This paper introduces a simplified analytical model describing the governing dynamics of near-field acoustically levitated objects. The simplification converts the equation of motion coupled with the partial differential equation of a compressible fluid, into a compact, second order ordinary differential equation, where the local stiffness and damping are transparent. The simplified model allows one to more easily analyse and design near-field acoustic levitation based systems, and it also helps[详细]

  2020-08-19 15:54

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• 声悬浮文献：声悬浮器中的扁球状液滴蒸发

  The modelling of evaporation in which droplet geometry deviates from sphericity, i.e., oblate spheroid, when the droplet experiences high dynamic stresses or a high Weber number, is important in many applications. The validation of such theoretical models is often difficult to achieve experimentally. The acoustic levitation technique was used to investigate the evaporation of an oblate spheroid for different liquids......[详细]

  2020-08-31 14:08

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• 声悬浮系统产品彩页

  声悬浮系统产品彩页详细讲述了声悬浮及高压声悬浮的基本原理，声悬浮的特点、应用及各个声悬浮产品的详细描述等。[详细]

  2020-05-06 16:37

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• 声悬浮法测定过冷氧化石墨烯纳米流体的表面张力

  The surface tensions of graphene oxide nanofluids of five mass concentrations were measured by the oscillation droplet method in an acoustic levitator. The oscillation information of the suspension droplets was obtained by combining acoustic with image recognition technology, and a shape correction coefficient a was introduced to modify the Rayleigh equation. Over the temperature ranging from −7 to 10°C......[详细]

  2020-08-25 15:50

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• 声悬浮系统参考文献：航空声悬浮--一种在高温下进行无容器液态处理的方法

  A method for containerless ‘liquid-phase processing was developed which has practical application in process and property research on virtually any material which is involatile at the melting point. It combines aerodynamic and acoustic forces to support and position the levitated material. The design provides forced convection control of the thermal boundary in the gas surrounding beam-heated specimens, which stabilizes the acoustic forces and allows acoustic ...... 详见文章详情。[详细]

  2024-09-28 00:12

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• 通过声悬浮法测量水基泡沫流变学

  An experimental technique is demonstrated for acoustically levitating aqueous foam drops and exciting their spheroidal modes. This allows fundamental studies of foam-drop dynamics that provide an alternative means of estimating the viscoelastic properties of the foam. One unique advantage of the technique is the lack of interactions between the foam and container surfaces, which must be accounted for in other techniques. Results are presented...... 详情请见文章内容。[详细]

  2020-09-03 13:44

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• 声悬浮文献：单个悬浮液滴蒸发影响因素的定量实验

  声悬浮已成功地用作喷雾聚合过程和颗粒形态测定的模型系统。用于研究悬浮液滴中的传热和传质的实验扩展需要更多的努力。为了使悬浮法成为跟踪热量和质量传递的通用工具，分析了影响实验参数及其对相关特性（如液滴变形，温度和周围流场）的影响。通过实验阐明了这些参数，以揭示它们的相互依赖性。结果表明，蒸发速度受液滴长径比的影响，液滴的长径比与其湿球温度直接相关。这主要是通过基于经典流体力学，气体速度和声边界层厚度改变声流场模式来解释的，这些声场场模式是通过粒子图像测速法可视化和量化的。为了研究湿球温度，对悬浮液滴进行了热电偶测量。事实证明，湿球温度取决于功率输入和所产生的声压级，因为它改变了液滴周围的声场。此外，温度测量表明必须建立温度校正，以解决沿热电偶轴进入液滴的热传导效应。所示的实验装置和测量程序应为实验确定蒸发液滴中的传热和传质提供指导。[详细]

  2020-08-19 15:48

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• 液滴的声悬浮---动力学，操纵和相变

  The technique of acoustic levitation normally produces a standing wave and the potential well of the sound field can be used to trap small objects. Since no solid surfaces is involved it has been widely applied for the study of fluid physics, nucleation, bio/chemical processes, and various forms of soft matter. In this article, we survey the works on drop dynamics in acoustic levitation, focus on......[详细]

  2024-09-28 01:21

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• HORIBA大气污染用悬浮颗粒物监测仪 APDA-370

  HORIBA大气污染用悬浮颗粒物监测仪 APDA-370[详细]

  2024-09-11 17:46

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• 声悬浮文献：硝酸铈液滴中的传热和传质及化学转化

  This paper deals with the thermo-physical changes that a droplet undergoes when it is radiatively heated in a levitated environment. The heat and mass transport model has been developed along with chemical kinetics within a cerium nitrate droplet. The chemical transformation of cerium nitrate to ceria during the process is predicted using Kramers’ reaction mechanism which justifies the formation of ceria at a very low temperature as observed in experiments. 详情请见文章。[详细]

  2024-09-28 14:31

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• 声悬浮的起源与奥古斯特•昆特（August Kundt）

  文中主要讲述了声悬浮现象是如何被发现的，以及它的发现者奥古斯特•昆特（August Kundt）的生平。[详细]

  2020-05-19 14:16

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• 颗粒物再悬浮和检测系统的性能指标

  颗粒物再悬浮和检测系统的性能指标[详细]

  2024-09-22 21:24

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• 角鲨烷在二氧化碳压力下的粘度--声悬浮法与常规方法的比较

  Viscosity measurements with CO 2 -saturated squalane with three different methods, a novel and two classical ones, are compared in a range of pressure from 0.1 MPa to 10.1 MPa at temperatures of 313 K, 333 K and 353K. The dynamic viscosities were measured using an acoustic levitator developed for measurements under pressure, a capillary viscometer and a rotational viscometer. Squalane is saturated with CO 2 at each pressure and temperature measured. It is shown......[详细]

  2020-08-25 12:18

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• 悬浮混合器产品样册

  悬浮混合器产品样册[详细]

  2024-09-20 13:31

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• 悬浮细胞培养器产品样册

  悬浮细胞培养器产品样册[详细]

  2016-10-18 14:41

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