Voidage - an overview | ScienceDirect Topics
Voidage, e, is defined as the fraction of the total volume which is free space available for the flow of fluids, and thus the fractional volume of the bed occupied by solid material is (1 − ε). Depending upon the nature of the porous medium, the voidage may range from near zero to almost unity.
孔隙，还是空隙？ - 知乎专栏
2023年3月26日 · 土力学把这部分叫做空隙（void），也就是空的意思，空隙体积与外观体积的比值叫做空隙率（voidage）。 可是，石油行业却不这么叫，而把它叫做孔隙（pore），孔隙体积与外观体积的比值叫做孔隙度（porosity）。
Voidage - an overview | ScienceDirect Topics
Voidage (P′) is the percentage of the void volume among granules to the bulk volume in the bulk volume of granular materials. From: Building Materials in Civil Engineering, 2011
欧路词典|英汉-汉英词典 voidage是什么意思_voidage的中文解释和发音_voidage的翻译_voidage …
英汉-汉英词典. n. 空隙度. 英语例句库. 1. The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells. 地层污染或工具堵塞;地层欠压;地层物性极差;邻井影。. 2. A new multiflow ...
voidage是什么意思_voidage的翻译_音标_读音_用法_例句_爱词霸 …
英 ['vɔɪdɪdʒ] 美 ['vɔɪdɪdʒ] 释义. n. 空隙度. 实用场景例句. 全部. Voidage is a relatively simple matter to determine experimentally. 空隙度是比较容易地用实验方法来确定的. 辞典例句. To the solution mining in - sit, the voidage of dissolved glauberiteis a crucial factor. 水溶过程中矿石的空隙度是确定该矿床能否采用原地水溶开采方法开采的决定性因素. 互联网.
How to Calculate Voidage | Sciencing
Voidage is the proportion of unoccupied volume (that is, gaps or empty spaces) in a volume of some material. The term voidage is normally used to refer to the tiny spaces between particles in a powder or granulated material like sand. The actual calculation of voidage is simple: it is the amount of empty space divided by the total volume.
Design of packed bed reactors: guides to catalyst shape, size, …
2001年4月1日 · The tabulated data provide information on difference of mean voidage values (Diff), standard deviation of corresponding local voidage values (SD Diff), t-value, p-value, and 95% confidence interval (CI). These properties are used to conduct the required tests, so as to indicate whether the beds in each set are identical.
2017年2月8日 · The local pressure drop ∇P through a porous medium is a function of the bed voidage, the flow velocity, and details of the particles, ∇P = f (ξ,U,D e,Φ s), (8) and other properties of the fluid. The velocity U is the superficial velocity, or volumetric flow rate of the fluid normalized by the cross-sectional area of the column.
voidage - ResearchGate
2020年4月18日 · Voidage is the volumetric fraction of a CFD cell free of particles, ideally defined as: εcell = 1 (ΣVparticles)/Vcell where εcell is the voidage of the cell, ΣVparticles is the total volume of...
For allowing accurate measurement of the intrinsic reaction kinetics the effect of all transport limiting phenomena must be negligible. The general condition for allowing neglecting transport limitations is that the effect on the conversion rate is less than 5%.