Jyeshtharaj B. Joshi

TL;DR: In this article, a new method is developed to estimate the bubble sizes in a large scale bubble column employing non-Newtonian solutions, based on estimating the single bubble rise velocity (ubr) from a plot of the square of superficial gas velocity (U2 G) and the measured gas hold-up raised to a power of 2.5 (∊2.5) and back calculation of volume to surface mean bubble diameter (dus) from Hirose and Moo-Young's correlation for ubr 0.3m/s.

TL;DR: In this paper, the effect of sparger design on dry and wet plate pressure drop was investigated in 0.2 and 0.385 m i.d. bubble columns, respectively.

TL;DR: In this article, the authors compared the performance of the k-e turbulence model and large eddy simulation (LES) for a reaction pair (HCl gas jet submerged in aqueous NH 3 ), which has the potential for simulating real systems.

TL;DR: In this article, the authors developed hybrid GA-SVR based correlations for overall gas hold-up (ϵG), volumetric mass-transfer coefficient (kLa), and effective interfacial area (a) in bubble column reactors for gas−liquid systems employing viscous Newtonian and non-Newtonian systems as the liquid phase.

TL;DR: In this paper, visualization experiments in upward forced convective nucleate boiling flows were carried out using high-speed photography technique with distilled water under atmospheric pressure, and the experiments showed that the bubbles departed from nucleating sites shortly after nucleation and slide along the heater surface.