Abstract: Bus-bars are a vital component of electrical circuit ranging from high current to low current applications. The individual phases of busbar are found to be arranged in different configurations. They are mounted in an enclosed chamber. However the different configurations lack support in terms of standards or empirical data. As such, no particular configuration is known which is optimum or best suited. The current flowing through the busbar will lead to generation of heat due to the material resistance, which needs to be dissipated effectively. Natural convection is the only mode of heat transfer within the chamber. The inefficient heat dissipation affects the longevity of the busbar. In the present study, computational simulation of bus-bars in a closed chamber is done by using CFD tool. Comparison of the heat dissipation characteristics and temperature distribution is done for different configurations. Based upon these, the optimum configuration is identified.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-03-98
• Views: 0
• Downloads: 0

Abstract: Third-order nonlinear optical materials are needed for numerous optoelectronic device applications including self-focusing, optical limiting, optical switching and data storage. Organic materials are potential candidate as nonlinear optical materials due to their synthetic flexibility, high damage resistance and large optical nonlinearity. In this paper, we investigate third-order nonlinear optical properties of permethylazine by using single beam z-scan technique with Q-switched, frequency doubled Nd:YAG laser (λ=532 nm) at 5 ns pulse. The values of nonlinear absorption coefficient(β), nonlinear refractive index (n2) and third-order nonlinear optical susceptibility (χ(3)) of permethylazine were found to be , and , respectively. We found, the signature of nonlinear refractive index in permethylazine is positive, and hence, it could be used as good self-focusing material.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-05-107
• Views: 0
• Downloads: 0