Indian Institute of Technology Bhubaneswar

About: Indian Institute of Technology Bhubaneswar is a education organization based out in Bhubaneswar, India. It is known for research contribution in the topics: Large Hadron Collider & Computer science. The organization has 1185 authors who have published 3132 publications receiving 48832 citations.

Gelation and Structural Transformation Study of Some 1,3,5-Benzenetricarboxamide Derivatives

Abstract: Short-chain analogues of N,N′,N″-tris-(4-alkylphenyl)-1,3,5-benzenetricarboxamide derivatives (methyl to butyl) are prepared, and their gelation study renders a positive result for all, except the butyl derivative, in both DMSO and DMSO/H2O. The crystal structure analysis of the parent compound (1a) and its methyl (1b) and butyl (1e) derivatives shows columnar structures. However, a notable difference has been observed within the columnar structures of 1a or 1b and 1e. Detailed structural analysis was carried out to reason such varied molecular assemblies, based on the deviation angle of amide groups, along with the aid of some reported examples that reveal the structural transformation of 1,3,5-benzenetricarboxamide derivatives from sheets to different columnar structures. In addition, similarity in the simulated powder pattern of the DMSO adducts of 1a and 1b and the experimental powder pattern of the xerogels of 1a and 1b indicates the possibility of similar packing in both crystals and the fibers of t...

Erosion Behavior of Glass-epoxy Composites Filled with SiC from Bamboo Leaf

Abstract: The present article reports the processing, mechanical characterization and solid particle erosion response of a new class of multi phase composites consisting of epoxy resin reinforced with E-glass fiber and SiC particulates. The SiC powder synthesized from bamboo leaf employing DC extended thermal plasma technique has been used as the filler in this glass-epoxy composite. It is observed that with increasing percentage of filler particles, there is a decline in tensile and flexural strength, but there is significant improvement in hardness and erosion wear performance. It is also observed that, among all the factors, impact velocity is the most significant factor followed by filler percentage and impingement angle, while erodent size has the least significance on erosion of the hybrid composite. Taguchi's orthogonal arrays have been used to identify the controlling factors influencing the erosion wear rate.

Prediction of droplet sizes in a T-junction microchannel: Effect of dispersed phase inertial forces

Abstract: The generation of monodispersed droplets in T-junction microchannels has wide range applications in biochemical analysis and material synthesis. While the generation of these monodispersed droplets was previously considered to be a balance between forces acting from continuous phase and interfacial force, it is shown here that the inertial force from the dispersed phase also plays an important role in determining the size of the generated droplets. A theoretical analysis for the size of monodisperse droplets generated in a microfluidic T-junction device is developed, and it is validated with a large set of experimental observations. The theoretical analysis accounts for the inertial forces from the dispersed phase along with the forces from the continuous phase and the interfacial forces to define the non-dimensional numbers that govern the droplet breakup in the T-junction microchannel.

Vortex-Excited Transverse Surface Waves in an Array of Randomly Placed Circular Cylinders

Abstract: The results of an experimental investigation on the generation of transverse surface waves inside an array of randomly placed circular glass cylinders are presented. The transverse waves are generated from the forces developed by periodic vortex shedding from the glass cylinders. A lock-on, or a coupling, can occur between the vortex-shedding frequency and the frequency of transverse water waves. In all the experimental runs, the amplitude of the periodic transverse waves initially increased with an increase in water depth but decreased rapidly after reaching a maximum value. The amplitude reached a maximum value at a critical value of the water depth. The maximum amplitude increased with an increase in cylinder diameter. For the lengths of all of the arrays, the maximum amplitude occurred at approximately one-fifth of the total length from the upstream edge of the array. The maximum amplitude across the array increased with increasing Reynolds number until a critical value of the Reynolds number ...