distillation tray meaning in Chinese
蒸馏塔板
Examples
- The finite volume method and the star - cd software are used to compute the fluid flow process and mass transfer process of one tray and for the first time of the whole distillation column ( 10 trays ) under the total reflux . the computed results are as follows : 1 . since the previous research did not show the comparison between the computational results and the measured values of 3d fluid field on a distillation tray , attention is paid to present work in this paper
本文采用有限体积法及计算流体力学软件“ star - cd ”对单块板以及首次对全回流下的全塔（十块板）流体流动、传质过程进行了计算，计算结果如下： 1 .泡沫工况下单块板的流场计算值与solari及bell ( 77 (的实测值吻合较好。 - Firstly , based on the present research all over the world , a 3d quasi - single phase model is built together with k - equations . the special feature of this model is taking account of the influence of interaction between liquid and gas , that is to say , the influence of interphase drag force , lifting force perpendicular to the relative velocity , virtual mass force and gas or liquid volume fraction in the fluid field have been considered . a 3d two - fluid model is also built in order to describe more accurately the fluid flow on distillation trays by comparing the computational results of quasi - single phase mathematical model with of two - fluid mathematical model
本文在国内外已有的研究基础上，首先建立了以k - (封闭模型为基础的三维拟单相流模型，该模型的特点在于充分考虑了气液两相间相互作用的影响，即计入了相间曳力、横向升力、虚拟质量力和气、液相含率对流场的影响；并建立了塔板三维双流体模型，主要目的是通过对比拟单相流数学模型、双流体数学模型的计算结果，建立能够准确描述塔板上流体流动的数学模型。 - Secondly , for the first time , by volume average concept and reynolds time - average method , a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation , concentration fluctuation and volume fraction of gas and liquid on mass transfer . a source item sc for interphase mass transfer is considered . by applying conventional method of estimating the interphase mass transfer coefficient , a formula for sc is obtained
其次，采用体平均概念、雷诺时均化方法结合塔板气液相互作用的实际情况首次推导了考虑速度、浓度脉动项和气、液相含率影响的塔板三维拟单相流湍流传质模型，源相中考虑了气液相间传质项sc ，并运用化工中关于相间传质系数计算的理论，推导了sc的表达式。