Hydrodynamics in a bubble column – Part 1: Two-phase flow

Multiphase computational fluid dynamics (CFD) simulation is a useful tool to study the hydrodynamics in a bubble column, if appropriate closure models are known. Systematic assessment of different models is an ongoing venture that benefits from improved validation data. The present study accumulates a database on two-phase flow experiments in a bubble column. This is achieved by using a combination of Particle Image Velocimetry and Shadowgraphy to measure the liquid velocity field and gas dispersion properties simultaneously. This methodology is applied for different needle diameters and gas flow rates. A detailed description of the experimental The experimental data (Table 1) described in this repository is structured into different folders and files as follows: Level 1: Folders classified by measurement configuration: TX_Jg_Y_Di_ZZZ as outlined in Table 1 TX = Identifier Jg_Y = Superficial gas velocity in mm/s Di_ZZZ = Inner diameter of the needle in µm Level 2: Folders classified by measurement height: Z_XXX Z_XXX = Measurement height in mm Level 3: csv files classified by their analysis parameter: Gas_Eg_ub_over_x.csv: Each csv file consists of five columns, namely the x-coordinate (in m), the gas holdup, the uncertainty of the gas holdup, the averaged bubble rising velocity (in m/s) and the corresponding uncertainty (in m/s). Liquid_v_z_over_x.csv: Each csv file consists of three columns, namely the x-coordinate (in m), the averaged liquid velocity (in m/s) and the corresponding uncertainty (in m/s). Table 1: Overview of the measurement cases in this repository. | ID | Diameter of needle orifice in µm | Superficial gas velocity in mm/s | |----|----------------------------------|----------------------------------| | T1 | 200 | 2 | | T2 | 200 | 4 | | T3 | 200 | 6 | | T4 | 600 | 2 | | T5 | 600 | 4 | | T6 | 600 | 6 |This project has received funding from the European Union's Horizon 2020 Marie Skłodowska-Curie Actions (MSCA), Innovative Training Networks (ITN), H2020-MSCA-ITN-2020 under grant agreement No. 955805, and the European Institute of Innovation and Technology (EIT). This body of the European Union receives support from the European Union's Horizon 2020 research and innovation programme

StarDist Models for "Hydrodynamics in a bubble column – Part 1: Two-phase flow"

This package contains the software and the trained models described in the publication "Hydrodynamics in a bubble column – Part 1: Two-phase flow". Please refer to the readme.md for installation instructions and to the Prediction_demo.ipynb for usage demonstration.This project has received funding from the European Union's Horizon 2020 Marie Skłodowska-Curie Actions (MSCA), Innovative Training Networks (ITN), H2020-MSCA-ITN-2020 under grant agreement No. 955805, and the European Institute of Innovation and Technology (EIT). This body of the European Union receives support from the European Union's Horizon 2020 research and innovation programme