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Physics

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Nuclear Power: System Simulations and Operation - P. Tsvetkov, 192 Pages

http://www.thuvienso.info - At the onset of the 21st century, we are searching for reliable and sustainable energy sources that have a potential to support growing economies developing at accelerated growth rates, technology advances improving quality of life and becoming available to larger and larger populations. The quest for robust sustainable energy supplies meeting the above constraints leads us to the nuclear power technology. Today’s nuclear reactors are safe and highly efficient energy systems that offer electricity and a multitude of co-generation energy products ranging from potable water to heat for industrial applications. Catastrophic earthquake and tsunami events in Japan resulted in the nuclear accident that forced us to rethink our approach to nuclear safety, requirements and facilitated growing interests in designs, which can withstand natural disasters and avoid catastrophic consequences. This book is one in a series of books on nuclear power published by InTech. It consists of ten chapters on system simulations and operational aspects. Our book does not aim at a complete coverage or a broad range. Instead, the included chapters shine light at existing challenges, solutions and approaches. Authors hope to share ideas and findings so that new ideas and directions can potentially be developed focusing on operational characteristics of nuclear power plants. The consistent thread throughout all chapters is the “system-thinking” approach synthesizing provided information and ideas. The book targets everyone with interests in system simulations and nuclear power operational aspects as its potential readership groups - students, researchers and practitioners.
- This chapter deals with simulation, a very powerful tool in designing, constructing and operating nuclear power generating facilities. There are very different types of power plants, and the examples mentioned in this chapter originate from experience with water cooled and water moderated thermal reactors, based on fission of uranium-235. Nevertheless, the methodological achievements in simulation mentioned below can definitely be used not only for this particular type of nuclear power generating reactor. Simulation means: investigation of processes in the time domain. We can calculate the characteristics and properties of different systems, e.g. we can design a bridge over a river, but if we calculate how it would respond to a thunderstorm with high winds, its movement can or can not evolve after a certain time into destructive oscillation – this type of calculations are called simulation. For simple systems we probably can reach an analytical solution to show that a given system is damped enough to stay stable without oscillation even in very different circumstances. Simulation steps in when the systems are too sophisticated to reach any analytical solution. Unfortunately, if we want to reach correct and accurate results we usually end up with very sophisticated and non-linear system description. This unavoidable leads us to simulation. According to some authors, probably the last engineering achievement made completely  without simulation was the Empire State Building. The Boeing 777 was mentioned as the first construction the design of which was completely unthinkable without simulation. (Janosy, 2003)

Nguồn : Internet
Tác giả : Pavel Tsvetkov
Kiểu tập tin : PDF
Độ lớn tập tin : 13MB
Đăng bởi : Thanh Ngoc
Cập nhật : 06.11.2011
Số lượt xem : 360
Số lượt tải : 3


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