Wind energy is the fastest growing alternate source of energy in the world since its purely economic potential is complemented by its great positive environmental impact. The wind turbine, whether it may be a Horizontal-Axis Wind Turbine (HAWT) or a Vertical-Axis Wind Turbine (VAWT), offers a practical way to convert the wind energy into electrical or mechanical energy. Although this book focuses on the aerodynamic design and performance of VAWTs based on the Darrieus concept, it also discusses the comparison between HAWTs and VAWTs, future trends in design and the inherent socio-economic and environmental friendly aspects of wind energy as an alternate source of energy.

Wind turbine design with emphasis on Darrieus concept Ion Paraschivoiu

The use of renewable energy resources, such as solar, wind, and biomass will not diminish their availability. Sunlight being a constant source of energy is used to meet the ever-increasing energy need. This review discusses the world's energy needs, renewable energy technologies for domestic use, and highlights public opinions on renewable energy. A systematic review of the literature was conducted from 2009 to 2018. During this process, more than 300 articles were classified and 42 papers were filtered for critical review. The literature analysis showed that despite serious efforts at all levels to reduce reliance on fossil fuels by promoting renewable energy as its alternative, fossil fuels continue to contribute 73.5% to the worldwide electricity production in 2017. Conversely, renewable sources contributed only 26.5%. Furthermore, this study highlights that the lack of public awareness is a major barrier to the acceptance of renewable energy technologies. The results of this study show that worldwide energy crises can be managed by integrating renewable energy sources in the power generation. Moreover, in order to facilitate the development of renewable energy technologies, this systematic review has highlighted the importance of public opinion and performed a real-time analysis of public tweets. This example of tweet analysis is a relatively novel initiative in a review study that will seek to direct the attention of future researchers and policymakers toward public opinion and recommend the implications to both academia and industries.

/pdf/towards-sustainable-energy-a-systematic-review-of-renewable-2s2gfrcejw.pdf

Towards Sustainable Energy: A Systematic Review of Renewable Energy Sources, Technologies, and Public Opinions

WE found, on experimental grounds in Article I, that the field of air‐flow past a short body of low resistance shape, such as an aerofoil, comprises two dissimilar parts: (a) a thin boundary layer enveloping the body and dominated by viscous effects, and (b) a motion outside the boundary layer in which viscosity is much less important. It will be remembered that in the external motion occur the large pressure changes, which, transmitted through the boundary layer, account for nearly all the lift and for part of the drag. These pressures we observed to be calculable from the velocities without appreciable error by Bernoulli's equation. In the present Article we confine attention to this external flow, assuming it to be steady, incompressible, and inviscid. Its dependence upon (a), already discussed to some extent, we ignore; the boundary layer is conceived to be everywhere very thin, so that the only role it plays is to allow of relative velocity at the surface of the body. The assumptions made, excepting that of incompressibility, will appear drastic, and it will not be surprising if some of our deductions prove discordant with experimental fact. Nevertheless, they lead to a theory which finds many applications and uses in real fluid motion, and, in particular, gives an intimate view of aerofoil flow that is very close to the truth. It is convenient to develop our reasoning in analytical terms and for simplicity to restrict the flow to two dimensions (Article 1, §5). But the engineer will find special scope in this part of aerodynamics for graphical methods in the solution of particular problems.

Aerodynamics for Engineers

https://research.aalto.fi/files/11703862/1_s2.0_S0951832015000356_main.pdf

Maritime transportation risk analysis: Review and analysis in light of some foundational issues

A novel hybrid MCDM approach for offshore wind farm site selection: A case study of Iran

Utilization of electrical energy is the key to economic growth and improvement in people׳s living standards, especially in developing countries. The growing demand for electrical energy and the environmental effect of fossil fuel usage are the main topics driving us towards renewable technology. Hydropower, mainly hydrokinetic energy technology, is a well-known source of renewable energy. This study was carried out to present the potential of hydrokinetic energy in the world and Malaysia. Relevant research literature, based on developments, applications, design, operation, efficiency as well as different hydrokinetic technologies have been reviewed. This work critically considers the main characteristics of Malaysian current and water depth and the challenges associated with enhancing the efficiency of hydrokinetic turbines and providing electricity to remote areas with access to running water but little electricity. This paper will aid researchers to identify areas that need to be improved, as well as encourage public bodies to implement proper energy policies regarding hydrokinetic energy technology usage in rural areas with low-speed currents.

Global renewable energy and its potential in Malaysia: A review of Hydrokinetic turbine technology

Maritime safety in the Malacca Strait is an important issue. The Strait of Malacca is the longest strait in the world (1120 km) and is classified as a high-risk area for navigation. The 800-km (500-mile) long Malacca Strait, linking Europe and the Middle East to the Asia-Pacific, carries about 40% of world trade. The strait is the main shipping channel between the Indian Ocean and the Pacific Ocean, linking major Asian economies such as those of India, China, Japan, and South Korea. In this paper, hazard identification and risk evaluation are established as steps of a formal safety assessment for ship collisions. The inputs of a fuzzification are obtained from a failure mode and effects analysis, which includes risk factors such as occurrence (O), severity (S), and detection (D). The risk factors O, S, and D are evaluated using the fuzzy method. The actual sea-traffic condition data are collected by means of Automatic Identification System equipment that is installed at Kobe University, Japan, and the Universiti Teknologi Malaysia (UTM) Johor, Malaysia. Those data are applied to establish the methods with the help of the Geographic Information System .

https://link.springer.com/content/pdf/10.1057%2Fjos.2013.9.pdf

Fuzzy FMEA model for risk evaluation of ship collisions in the Malacca Strait: based on AIS data

Effect of wing form on the hydrodynamic characteristics and dynamic stability of an underwater glider

Risk of Navigation for Marine Traffic in the Malacca Strait Using AIS

The growth of population, rising fossil fuel prices (limited and decreasing day by day), pollution problem due to use of fossil fuels and increasing electrical demand are important factors that encourage the use of green and renewable energy technologies. Among the different renewable energy technologies, hydro power generation (large and small scale) is the prime choice in terms of contribution to the world's electricity generation by using water current turbines. Currently, researchers mainly focused on design and development of different kind of turbines to capture hydropower to generate electricity as clean and reliable energy. This paper is a review of the status of research on water current turbines carried out to generate electricity from hydrokinetic energy especially in places where there is no electricity, but there is access to flowing water. Keywords—Turbines, Renewable Energy, Hydropower.

/pdf/review-of-various-designs-and-development-in-hydropower-39vz50ds5t.pdf

Adi Maimun

Papers

Global renewable energy and its potential in Malaysia: A review of Hydrokinetic turbine technology

Fuzzy FMEA model for risk evaluation of ship collisions in the Malacca Strait: based on AIS data

Effect of wing form on the hydrodynamic characteristics and dynamic stability of an underwater glider

Risk of Navigation for Marine Traffic in the Malacca Strait Using AIS

Review of Various Designs and Development in Hydropower Turbines