computational fluid dynamics (cfd) is a computational technology that enables researchers to study the dynamics of things that flow. by using cfd, it is possible to build a computational model that represents a system under study. it not only predicts fluid flow behavior, but also the transfer of heat, mass, phase change, chemical reaction, mechanical movement, and stress or deformation of rela...

Radiotracer experiments are carried out in order to determine the mean residence time (MRT) as well as percentage of dead zone, V dead (%), in an integrated mixer consisting of Rushton and pitched blade turbine (PBT). Conventionally, optimization was performed by varying one parameter and others were held constant (OFAT) which lead to enormous number of experiments. Thus, in this study, a 4-fac...

Abrasive flow machining (AFM) is an advance machining process which is used to machine complex shape and is used to deburr, remove recast layer and radius surfaces. This research uses a developed abrasive flow machine and an experiment employing abrasive flow machining was conducted on plunger body fabricated on stainless steel SS 446. In this research AFM parameters such as abrasive particle s...

Surface roughness is used to determine and evaluate the quality of a final product in turned parts. In order to get better surface finish, the proper setting of cutting parameters is crucial before the process takes place. Titanium Grade 5 material is one whose surface hardness is high and it is used for making Aerospace engine components, titanium rod and ideal materials for medical implements...

The present paper has focused on the development of an Alluminium metal matrix composite (AMMC) which posses good mechanical properties to meet the functional requirements as the materials of machine elements. The AMMC samples are prepared by mixing reinforcement materials like SiC, Al2O3, Al3C4 in different sizes and percentages with Alluminium base materials like Al6061, Al6063, Al7075 using ...

This paper describes the results of optimising three process variables (control factors) to achieve a narrow line width in laser engraving of ITO conductive coatings using the Taguchi technique of experimental design. The laser used is a NEC Q-switched continuous wave (CW) Nd:YAG laser operating at a wavelength of 1.064 μm. The three process variables explored are: Q-switch frequency, speed of ...

The purpose of this work is to provide a complete study of the influence of operational parameters of the supercritical carbon dioxide assisted extraction (SC CO2E) on yield of wedelolactone from Wedelia calendulacea Less., and to find an optimal combination of factors that maximize the wedelolactone yield. In order to determine the optimal combination of the four factors viz. operating pressur...

Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping – a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure, wear, and corrosion properties. Following L9 Orthogonal array of Taguchi method, the samples were solutionized at 1200°C for 30, 45, and 60min followed by water quenching. Aging treatment was done...

The present contribution describes an application of a hybrid approach using fuzzy logic and particle swarm optimization (PSO) for optimizing the process parameters in the electric discharge machining (EDM) of AISI 316LN Stainless Steel. In this study, each experimentation was performed under different machining conditions of pulse current, pulse on-time, and pulse off-time. Machining performan...

In the present work an attempt is made to select the combination of optimum cutting parameters which will result in better surface finish. Machining with optimum cutting parameters will result in minimum machining time and hence increasing the productivity. Four parameters viz. spindle speed, feed, depth of cut and length to diameter (L/D) ratio of boring bar has been taken as control factors. ...