Papers by Satyabrata Podder
Performance Analysis and Numerical Modeling of Mechanical and Electrical Components in a Rooftop Vertical-Axis Wind Turbine
Energies
This study explores the integration of wind power generation into urban infrastructure via a roof... more This study explores the integration of wind power generation into urban infrastructure via a rooftop vertical-axis wind turbine. A rigorous experimental framework was established by installing a small-scale turbine on an urban building for performance assessment under controlled conditions. Simulated environmental conditions were created using a pedestal fan and blower to evaluate mechanical interactions between the components and electrical output efficiency of the turbine. Extensive numerical modeling was conducted to analyze turbine performance, by computational fluid dynamics using ANSYS FLUENT. The results reveal that the turbine operates efficiently even at low to moderate wind speeds (0.5–6 m/s), demonstrating its feasibility for urban deployment. Performance tests indicated that, as the shaft rotational speed increased from 55 rpm to 115 rpm, the output voltage, current and power varied nonlinearly in the ranges of 3–11.9 V, 20–130 mA and 0.05–2.7 W, respectively. Vibration ...
Recent Trends in Non Destructive Testing and Evaluation in Civil Engineering
Trends in Sciences
The present numerical analysis reveals the nature of non-Newtonian fluid flow through circular mi... more The present numerical analysis reveals the nature of non-Newtonian fluid flow through circular microchannels under slip boundary conditions. The power law has been used for the simulation of the fluid flow, which considers a steady, laminar, incompressible non-Newtonian fluid acted upon by a constant, externally applied magnetic field. The flow is axisymmetric and slip boundary conditions are applied in the near wall. A constant magnetic flux has been applied on the wall boundary to analyze the effect of magnetic field on Xanthan solution in formic acid, a type of non-Newtonian fluid having electrical conductivity. Using control volume method of finite difference scheme, a set of dimensionless governing differential equations defining the behavior of the fluid flow in the microchannel under an externally applied magnetic field, has been solved using slip boundary conditions to understand the effect of magnetic field on slip induced flow of non-Newtonian fluids. The results have depi...
The Effect of the Magnetic Field of High Intensities on Velocity Profiles of Slip Driven Non-Newtonian Fluid Flow through the Circular, Straight Microchannel
International journal of engineering trends and technology, Apr 25, 2022
In micro-devices, inertial forces tend to decrease, while surface effects dominate the flow and v... more In micro-devices, inertial forces tend to decrease, while surface effects dominate the flow and viscous effects. the numerical approach is becoming popular to describe fluid flow characteristics of slip flow through microchannels by Navier-Stokes equations in conjunction with the slip boundary. A study has been made numerically to understand the effect of magnetic induction on the degree of slip which depends upon the flow behavior index, slip length, Reynolds no. In the present study, various observations have been made on the magnetohydrodynamic effect on non-Newtonian slip flow velocity profiles through microchannels to reveal the effect of flow behavior index and slip coefficient. This work reveals that the slip coefficient plays a major role in the flow, and the externally applied magnetic field affects both centerline and slip velocity.
Numerical Analysis of Fuzzy Logic Control and PID Control Response for an Electro-Hydraulic Actuation System
International Journal of Mechanical Engineering, 2013
Model free Fuzzy Logic Controller and Model Based PID Controller are widely used in controlling e... more Model free Fuzzy Logic Controller and Model Based PID Controller are widely used in controlling elctro-hydraulic actuation systems. In order to have a model free approach that is free of uncertainties of actual system the Fuzzy Logic control is being of higher interest now a days. So a study of comparison of the two type of control has been done using a Simulink model of electro hydraulic actuation system. The results have been shown for a sinusoidal position demand. KeywordsFuzzy, PID, control, Electro-hydraulic
International Journal of Fuzzy Logic Systems, 2013
Interference System (ANFIS), to predict the weld metal deposition in the Metal Active Gas (MAG) w... more Interference System (ANFIS), to predict the weld metal deposition in the Metal Active Gas (MAG) welding process for a given set of welding parameters using hybrid learning algorithm to have a correct amount of weld metal deposition to meet the correct welding requirement. Total 81 nos. of experiments are designed according to full factorial design of experiments with varied input parameters and its results are used to develop an ANFIS model. Multiple sets of data from experiments are utilized to train, check and validate the intelligent network, which is used to predict the amount of weld metal deposition. The proposed ANFIS, developed using MATLAB functions, is flexible, and it scopes for a better online monitoring system to achieve better welding requirement.
Over the years, metal cutting researchers have developed a number of modeling techniques among wh... more Over the years, metal cutting researchers have developed a number of modeling techniques among which the Finite Element Method (FEM) has particularly become the most popular tool for simulating metal cutting processes. It is already known that during machining, the maximum temperature generated is on the chip-tool interface. Though majority of the heat generated is taken away by the chip, the amount of heat distributed in the work piece greatly affects the quality of machined part. In this study, the temperature distribution in the single point cutting tool is simulated using Finite Element Methods. For this, a special experimental set up has been fabricated where lathe turning of a single point cutting tool was carried out in dry condition as today's manufacturing industry would like to embrace dry machining for both environmental and economic reasons. The temperature reading is taken using Alumel-Chromel (k type) thermocouple with the help of a Datalogger (DT-85). This temperature reading was further used as input for 3-D transient thermal modeling of the HSS cutting tool during machining.
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Papers by Satyabrata Podder