82 research outputs found
Title: Inclusion Removal by Bubble Flotation in a Continuous Casting Mold
Abstract Fundamentally-based computational models are developed and applied to quantify the removal of inclusions by bubbles during the continuous casting of steel. First, the attachment probability of inclusions on a bubble surface is investigated based on fundamental fluid flow simulations, incorporating the turbulent inclusion trajectory and sliding time of each individual inclusion along the bubble surface as a function of particle and bubble size. Then, the turbulent fluid flow in a typical continuous casting mold, trajectories of bubbles and their path length in the mold are calculated. The change in inclusion distribution due to removal by bubble transport in the mold is calculated based on the computed attachment probability of inclusions on each bubble and the computed path length of the bubbles. In addition to quantifying inclusion removal for many different cases, the results are important to evaluate the significance of different inclusion removal mechanisms. The modeling approach presented here is a powerful tool for investigating multi-scale phenomena in steelmaking and casting operations, in order to learn how to optimize conditions to lower defects
TRENDS IN ACADEMIC MOBILITY IN THE UNIVERSITY OF NORTH BENGAL (2011-2020): A SCIENTOMETRIC STUDY
The paper examines the bibliographic data of 1436 documents published by the University of North Bengal and retrieves the data for a span of ten years, which was indexed in the Scopus database from 2011 to 2020 on various parameters. The average number of documents published per year was 143.6. The highest number of publications 166 was published in 2020, while the lowest number of publications was 108 in 2011. The relative growth rates (RGR) have decreased in 2019 (-0.34) and highest in 2012 (0.756) for last 10 years. The doubling time (Dt) increased during 2012 to a maximum of 231. Throughout the study, 9907 citations were recorded and a maximum of 2280 citations was noted in 2020. The majority of the documents came from articles, with 1333 coming from journals, and the source of the most funds was from UGC (12.67). Most of the co-authors came from the United States (8.22 per cent), and P Ghosh was the most prolific author, with 118 contributions
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