Analysis fluid sloshing when road tanker experience sudden breaking - A computational approach

Sloshing can occur as an outcome of a disturbance to a partly filled fluid road tanker. As an effect, the vibrant behavior of fluid is observed when subjected to the sudden breaking of a roadway tanker, because it significantly affects the stability leading to rollover of the tank structure. So to avoid the instability and rollover condition. The baffle is used as suppression media to suppress the vibrant behavior of the fluid. This research work is carried out with aid of a computational approach using the ALE technique. The ALE approach is tested with different configurations of tanks mainly clean bore tanks, single baffle tanks, two baffle tanks,s, and three baffle tanks with 50%,60%, and 80% filling ratios respectively. The outcome of this research paper to examine several factors for preventing accidents of road tankers when experiencing sudden breaking conditions

Analysis fluid sloshing when road tanker experience sudden breaking - A computational approach

Sloshing can occur as an outcome of a disturbance to a partly filled fluid road tanker. As an effect, the vibrant behavior of fluid is observed when subjected to the sudden breaking of a roadway tanker, because it significantly affects the stability leading to rollover of the tank structure. So to avoid the instability and rollover condition. The baffle is used as suppression media to suppress the vibrant behavior of the fluid. This research work is carried out with aid of a computational approach using the ALE technique. The ALE approach is tested with different configurations of tanks mainly clean bore tanks, single baffle tanks, two baffle tanks,s, and three baffle tanks with 50%,60%, and 80% filling ratios respectively. The outcome of this research paper to examine several factors for preventing accidents of road tankers when experiencing sudden breaking conditions

Simulation of heat transfer augmentation during constant solar heat flux in circular pipe

The aim of the current research is to evaluate the flow characteristics and heat transfer enhancement in a circular hose having a diameter of 12.5 mm and 1500 mm Length subjected to a constant solar heat flux of (1000 W/m2) using numerical simulation. The study evolves the changing Reynolds numbers (5000 <Re < 10500) and its effect on the Nusselt number during variable flow rate conditions from 0.45 m/sec to 0.90 m/sec. The heat transfer phenomenon was evaluated during controlled conditions with working fluid as water. The results obtained from numerical investigations were studied to understand the flow and heat transfer enhancement, Nusselt number phenomenon, outlet temperature, and fluid fully developed region. State the most important part of your findings and achievement

Synthesis of 2,5-disubstituted pyrroles via dehydrogenative condensation of secondary alcohols and 1,2-amino alcohols by supported platinum catalysts

Direct synthesis of 2,5-disubstituted pyrroles has been achieved via acceptorless dehydrogenative heterocyclization of 1,2-aminoalcohols and secondary alcohols by utilizing a heterogeneous carbon-supported Pt catalyst (Pt/C). The optimized method gave 92% yield of 2-ethyl-5-phenyl-1H-pyrrole as a desired product from 2-amino-1-butanol and 1-phenylethanol in the presence of 0.1 mol% of Pt/C and 1.1 equiv. of KOtBu. It has been revealed that Pt/C demonstrates superior catalytic activity to a number of catalysts tested in this study including other transition metal-loaded carbon and various metal-oxide-supported Pt catalysts. In addition, the turnover number (TON) obtained in the present system was found to be higher than those obtained in previously-reported catalytic systems. It is significant that the Pt/C catalyst could be recycled as a heterogeneous catalyst without significant loss in the activity and showed a wide substrate scope for the 2,5-disubstituted pyrrole forming process

Selective C3-alkenylation of oxindole with aldehydes using heterogeneous CeO2 catalyst

We report herein that a commercially available CeO2 is an active and reusable catalyst for the C3-selective alkenylation of oxindole with aldehydes under solvent-free conditions. This. catalytic method is generally applicable to different aromatic and aliphatic aldehydes, giving 3-alkyledene-oxindoles in high yields (87%-99%) and high stereoselectivities (79%-93% to E-isomers). This is the first example of the catalytic synthesis of 3-alkenyl-oxindoles from oxindole and various aliphatic aldehydes. The Lewis acid-base interaction between Lewis acid sites on CeO2 and benzaldehyde was studied by in situ IR. The structure-activity relationship study using CeO2 catalysts with different sizes suggests that defect-free CeO2 surface is the active site for this reaction. (C) 2020, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved