The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography

Dioguardi Fabio; Mele Daniela; Dellino Pierfrancesco; Durig Tobias

首页> 外文期刊>Journal of Volcanology and Geothermal Research2012V243-244NOCT,15 >The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography

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The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography

机译：通过3D X射线显微断层摄影术获得的具有形状的火山颗粒的最终速度

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New experiments of falling volcanic particles were performed in order to define terminal velocity models applicable in a wide range of Reynolds number Re. Experiments were carried out with fluids of various viscosities and with particles that cover a wide range of size, density and shape. Particle shape, which strongly influences fluid drag, was measured in 3D by High-resolution X-ray microtomography, by which sphericity Phi(3D) and fractal dimension D-3D were obtained. They are easier to measure and less operator dependent than the 2D shape parameters used in previous papers. Drag laws that make use of the new 3D parameters were obtained by fitting particle data to the experiments, and single-equation terminal velocity models were derived. They work well both at high and low Re (3 x 10(-2)

机译：为了定义适用于广泛雷诺数Re的终极速度模型，进行了下落的火山颗粒的新实验。实验是使用各种粘度的流体以及覆盖各种尺寸，密度和形状的颗粒进行的。通过高分辨率X射线显微照相术在3D中测量了强烈影响流体阻力的颗粒形状，从而获得了球形度Phi（3D）和分形维数D-3D。与以前的论文中使用的2D形状参数相比，它们更易于测量且对操作者的依赖性较小。通过将粒子数据拟合到实验中，获得了使用新3D参数的阻力定律，并推导了单方程终端速度模型。它们在高和低Re（3 x 10（-2）

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来源
《Journal of Volcanology and Geothermal Research2012V243-244NOCT,15》 |2017年第1期|41-53|共13页
作者
Dioguardi Fabio; Mele Daniela; Dellino Pierfrancesco; Durig Tobias;
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作者单位

British Geol Survey, Lyell Ctr, Edinburgh, Midlothian, Scotland;

Univ Bari, Dipartimento Sci Terra & Geoambientali, Bari, Italy;

Univ Bari, Dipartimento Sci Terra & Geoambientali, Bari, Italy;

Univ Iceland, Inst Earth Sci, Reykjavik, Iceland;

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正文语种 eng
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关键词
3D Sphericity; 3D Fractal dimension; Particle shape; Fluid drag; X-ray micro-tomography; Terminal velocity;

机译：3D球面度;3D分形维数;颗粒形状;流体阻力;X射线显微断层扫描;终点速度;

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1. Texture analysis of volcanic rock samples: Quantitative study of crystals and vesicles shape preferred orientation from X-ray microtomography data [J] . M. Voltolini, D. Zandomeneghi, L Mancini, Journal of Volcanology and Geothermal Research . 2011,第1a2期

机译：火山岩样品的纹理分析：X射线显微断层扫描数据对晶体和囊泡形状择优取向的定量研究
2. 3D characterization of individual multiphase particles in packed particle beds by X-ray microtomography (XMT) [J] . A.R. Videla, C.L. Lin, J.D. Miller International Journal of Mineral Processing . 2007,第1a4期

机译：X射线显微断层扫描（XMT）对堆积颗粒床中单个多相颗粒的3D表征
3. A study on the influence of internal structures on the shape of pyroclastic particles by X-ray microtomography investigations [J] . Daniela Mele, Fabio Dioguardi, Pierfrancesco Dellino Annals Of Geophysics . 2018,第0期

机译：X射线显微断层照相术研究内部结构对火山碎屑颗粒形状的影响
4. 3D CHARACTERIZATION AND ANALYSIS OF PARTICLE SHAPE USING X-RAY MICROTOMOGRAPHY (XMT) [C] . C. L. Lin, J. D. Miller SME Annual Meeting and Exhibit . 2005

机译：X射线显微镜（XMT）的3D表征与颗粒形状分析
5. Characterization of Local Deformation in Lead-free Solder Joints Using Three Dimensional (3D) X-ray Microtomography [D] . Padilla, Eric 2012

机译：使用三维（3D）X射线显微断层扫描表征无铅焊点中的局部变形
6. In situ 3D topographic and shape analysis by synchrotron radiation X-ray microtomography for crystal form identification in polymorphic mixtures [O] . Xian-Zhen Yin, Ti-Qiao Xiao, Ashwini Nangia, -1

机译：通过同步辐射X射线显微断层术进行原位3D地形和形状分析以鉴定多晶型混合物中的晶型
7. The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography [O] . Dioguardi, Fabio, Mele, Daniela, Dellino, Pierfrancesco, 2017

机译：通过3D X射线显微断层摄影术获得的具有形状的火山颗粒的终速度
8. Three Dimensional Structures of Particles Recovered from the Asteroid Itokawa by the Hayabusa Mission and a Role of X-Ray Microtomography in the Preliminary Examination [R] . Tsuchiyama, A., Uesugi, M., Uesugi, K., 2011

机译：Hayabusa任务从小行星Itokawa恢复的粒子的三维结构和X射线显微图像在初步检查中的作用

The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography

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