Feb '19


The IUP Journal of Mechanical Engineering

ISSN: 0974-6536

UGC Approved Journal @ Sl.No: 48642

A 'peer reviewed' journal distributed by EBSCO and Proquest Database

It is a quarterly journal that publishes research papers dealing with Production engineering, Industrial engineering; Materials engineering; Solid mechanics; Solid and structural mechanics; Fluid mechanics; Fracture mechanics; Biomechanics; Metallurgy, Tribology, Heat transfer; Welding technology; Composite materials; Machine design – CAD/CAM; Renewable energy technology; Mechanical maintenance; Refrigeration & Air-conditioning; Quality control and Operational research, etc.

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Focus Areas
  • Mechanics of Solids
  • Materials
  • Fluid Mechanics
  • Combustion and Fuels
  • Thermodynamics/Heat Transfer
  • System Dynamics and Controls
  • Design
  • Design, Manufacturing and Product Development
  • Ocean Science and Engineering
  • Energy Science and Engineering
  • Bioengineering
  • Micro and Nano Engineering
CheckOut
Article   Price (₹) Buy
Modeling and Simulation of a 3 MW Wind Turbine Blade for Determination and Analysis of Flow Characteristics
50
Design and Fabrication of Laser Engraving Machine
50
The Effect of Optimum Entransy Dissipation Number on the Performance of Heat Exchanger
50
Perturbation Analysis of Glassy Alloy Film Formation
50
Exergy Analysis of Gautami Combined Cycle Power Plant, India: A Case Study
50
     
Contents : (Feb' 2019)

Modeling and Simulation of a 3 MW Wind Turbine Blade for Determination and Analysis of Flow Characteristics
Amool A Raina, Saeed Farokhi and Kyle Wetzel

The paper discusses the strategy for aerodynamic prediction and analysis of a 56 m blade using Computational Fluid Dynamics (CFD) tools. The aim of this study is to simulate the flowfield around a 3 MW wind turbine blade to study the flow physics dominated by the three-dimensional effects. This blade incorporates flatback airfoils on the inboard region of the blade used to improve aerodynamic performance in the root region. In order to reduce computation time and complexity, only one-third of the domain is modeled and a periodic boundary condition is imposed on the 120° periodic faces. A k- SST turbulence model is used as a solver for this simulation. Several features pertaining to 3D flowfield behavior are captured and studied. A comparison is made of the results obtained from RANS with those obtained from Boundary Element Method (BEM)-based methods. The flow past the flatback regions of the blade did not separate at the sharp edges of the flatback corners, as predicted by 2D simulation due to the presence of a dominant radial flow component in the span-wise direction which caused the flow to wrap around the trailing edge of the blade without corner separation. The paper presents a comparison of the inflow angles from CFD to those predicted by BEM.


© 2018 IUP. All Rights Reserved.

Article Price : Rs.50

Design and Fabrication of Laser Engraving Machine
Rahul Mehra, Sachin Mohal and B Lonia

Laser engraving machine is used to mark various pictures and symbols on different materials. The laser engraving setup is advantageous due to its low operational cost, lightweight, portability and easy-to-learn features. The paper fabricates a low cost rapid prototype laser engraving machine. The proposed setup has been applied to Glass Fiber Reinforced Plastics (GFRP) composites, plastics, wood, cardboard, etc., to yield desired profile, contour, information and various drawings. Moreover, developed laser engraving setup has high precision and processing efficiency. Laser engraving technique involves color change of the surface due to thermal energy emerged by the laser beam. The 3D modeling and simulation of this machine is done using CREO 2.0 software. A 15 W diode laser is used to engrave the various materials. Various advanced software and hardware like Inkscape, Arduino, GRBL controllers and microcontrollers are assembled together, further leading to the execution of the final engraving. Validity of the machine has been verified by performing dimensional, dependency and co-ordinate tests. Finally, pilot experimentation has been carried out on GFRP composites.

© 2018 IUP. All Rights Reserved.

Article Price : Rs.50

The Effect of Optimum Entransy Dissipation Number on the Performance of Heat Exchanger
Roopesh Tiwari and Govind Maheshwari
The paper introduces a new concept of optimum entransy dissipation number to evaluate the heat exchanger performance. The analytical model presented is based on entransy which represents the heat transfer ability of an object. The lower the entransy dissipation, the higher the heat transfer ability of an object. The parallel flow and counter flow arrangements are analyzed. The analysis shows that the optimum entransy dissipation number, which is a non-dimensional parameter, has a decreasing trend with the increasing number of transfer units for both parallel flow and counter flow arrangement. The counter flow arrangement yields better result compared to parallel flow arrangement. The variation of optimum entransy dissipation number is compared with the variation of entransy dissipation number. The results show similar pattern; hence, the optimum entransy dissipation number can be used to characterize the heat exchanger performance.


© 2018 IUP. All Rights Reserved.

Article Price : Rs.50

Perturbation Analysis of Glassy Alloy Film Formation
Rahul Basu

A coupled set of equations describing heat and mass transfer during phase transformation is formulated incorporating surface convective effects. These equations, which are nonlinear due to the moving interface, are linearized and decoupled. The effects of the Biot, Fourier and Stefan numbers are analyzed through small parameter expansions. Solutions obtained via this artifice allow closer examination of surface effects on the boundary layer of the phase transformation. A relation is found on the effect of the glass transition temperature versus the boundary layer thickness for several alloys in various groups of the periodic table. Earlier work is analyzed in the light of the present analysis.


© 2018 IUP. All Rights Reserved.

Article Price : Rs.50

Exergy Analysis of Gautami Combined Cycle Power Plant, India: A Case Study
Venkata Ravi Ram Pinninti, T V K Bhanuprakash, Ramamurthy Dwivedula and Rama Jonnada

The continual need to optimize costs and the recent competitive pressure from renewables have seen renewed focus on improving and optimizing plant components’ efficiency. Combined cycle power plants are better from thermal efficiency point of view compared with coal-based power plants. Exergy analysis offers better alternative to energetic analysis based on simpler model of energy balance only. Identifying system energy losses is easier using exergy analysis, making it a better analytical tool. The paper presents a case study of exergy analysis of Gautami combined cycle power plant. Component level theoretical analysis is done first and applied to the operational data from the plant. The results showed that the gas turbine combustion chamber has the highest exergy loss of 33%. Impact factors like ambient temperature, pressure ratio, turbine inlet temperature and heat recovery steam boiler are also considered on the exergy losses of the power plant.


© 2018 IUP. All Rights Reserved.

Article Price : Rs.50

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