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Das, Amlan
- Facies Development and Depositional Environment of the Mungra Sandstone, Kolhan Group, Eastern India
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PDF Views:142
Authors
Affiliations
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, IN
1 Department of Applied Geology, Indian School of Mines, Dhanbad - 826 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 6 (2005), Pagination: 753-757Abstract
Preliminary study through process-Related facies analysis in late Paleoproterozoic-Early Mesoproterozoic Mungra Sandstone Formation of Kolhan Group, the least studied stratigraphy in Singhbhum Geology, reveals two major facies types, viz, hummocky sandstone bodies (below fair weather wave base) and planar and crossstratified sandstones (above fair weather wave base). From contact relations between facies types and facies succession development, a lower shoreface environment is inferred. An E-WW paleoshoreline orientation is suggested for the Mungra Sandstone Sea.Full Text
- Numerical Modelling and Design of Horizontal-Axis Wind Turbine Blade for Low Wind Speed Regimes
Abstract Views :316 |
PDF Views:3
Authors
Affiliations
1 Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
1 Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
Source
Technology Spectrum Review, Vol 1, No 1 (2016), Pagination: 1-6Abstract
In this paper a set of 3 aerofoils of the NWT family designed by National Aerospace Laboratories (NAL) has been modified. The modified aerofoils are NWT 1001, NWT 2004, and NWT 2005. The main purpose of modifying is to shoot the low wind speed regimes hence to get more coefficient of lift and less coefficient of drag. These new modified aerofoils are numerically modeled, and are used to design a blade of 2.5m radius. Since aerofoils play a very important role in blade design and its enhancement in the power production of wind turbine in the low wind speed conditions makes the design unique. The comprehensive study of modified NWT aerofoils and its geometrical optimization are scrutinized to improve the coefficient of performance of the blade with the Reynolds number in the range of 250000. The Dual Evolutionary method is used to optimize the blade. The proposed design is very simple and more suitable for Indian low wind speed regimes.Keywords
Modified NWT Aerofoils, Blade Design, Numerical Modeling, Computational Fluid Dynamics, Optimization.
References
- Dr Haran A P, Soundranayagam, Isaac J.J: Experimental characteristics of wind turbine blading over full 0 to 360 degree angle of attack, Department of aeronautical engg. Park College of technology.
- Development and Validation of Design Methodologies and Design Tools to Enable Wind Turbine Rotors/Blades to be Optimized for Low and Moderate Wind Regimes, Project Closure Report Submitted to Centre for Wind Energy Technology ( C-WET ).
- Dr. David Wood, Department of Mechanical and Manufacturing Engineering DOI 10.1007/978-1-1-84996-175-2 Springer London Dordrecht Heidelberg NewYork.
- Guido Weinzierl, A BEM Based Simulation-Tool for Wind Turbine Blades with Active Flow Control Elements
- QBlade: An open source tool for design and simulation of horizontal and vertical axis wind turbines, International Journal of Emerging Technology and Advanced Engineering, (2013), Vol. 3, pp. 264-269
- QBlade : an Open Source Software developed by the Hermann Föttinger Institute of TU Berlin
- Drela, M., Giles, M., 1989, “Viscous-Inviscid Analysis of Transonic and Low Reynolds Number Aerofoils”, AIAA Journal Vol.25, No.10