کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11003330 | 1456912 | 2019 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-phase CFD modeling of pulsed disc and doughnut column: Prediction of dispersed phase holdup
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
CFD simulations of Pulsed Disc and Doughnut Columns (PDDCs), which are used in solvent extraction based separation processes, are preformed to predict dispersed phase holdup in two-phase flow. Flow field is obtained by using Euler-Euler approach embedding continuity and momentum equations along with equations of the standard k-ε mixture model of turbulence. The dispersed phase is assumed to be monodispersed. The momentum equation of the dispersed phase is modified to account for the effect of collisions among drops on dispersed phase holdup. The model is validated with in-house experimental data for different geometric and operating conditions. Predictions of CFD model are found to be better than the predictions of the reported correlations for estimating dispersed phase holdup in PDDCs. The validated computational approach is used for parametric analysis to understand the dependence of dispersed phase holdup and other hydrodynamic variables on operating and geometric parameters and scale-up methodology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 209, 31 January 2019, Pages 608-622
Journal: Separation and Purification Technology - Volume 209, 31 January 2019, Pages 608-622
نویسندگان
Sourav Sarkar, Krishna Kumar Singh, Kalsanka Trivikram Shenoy,