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首页> 外文会议>Seminar on Fission Gas Behaviour in Water Reactor Fuels Sep 26-29, 2000 Cadarache, France >EVALUATION OF THERMAL, MECHANICAL AND FISSION GAS RELEASE BEHAVIOR FOR BWR FUEL RODS WITH TETO
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EVALUATION OF THERMAL, MECHANICAL AND FISSION GAS RELEASE BEHAVIOR FOR BWR FUEL RODS WITH TETO

机译：TETO对BWR燃料棒的热，机械和裂变气体释放行为的评估

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摘要

A computer code (TETO) was developed to carry out thermal-mechanical analysis and fission gas release in fuel rod elements of the BWR type. This program was especially designed for use in the simulations made with the Fuel Management System (FMS) from Scandpower. Using experimental correlations this code models the phenomena of swelling, fission gas release and fracture for fuel pellets and cladding that can occur during irradiation cycles. This code differs from other programs in that it uses a simplified model to obtain the temperature profile along the cooling channel with the supposition that there exists a two-phase flow. This profile is used to determine the radial temperature distribution. The code calculates the axial and radial temperature distributions along the fuel rod at half the distance of the pellet's length; in other words there are as many axial points as pellets. Also, the program models the experimental correlation for swelling and fission gas releases and performs a thermal-elastic analysis for fuel pellets and cladding.
机译：开发了计算机代码（TETO），以进行BWR型燃料棒元件中的热机械分析和裂变气体释放。该程序是专门为用Scandpower的燃油管理系统（FMS）进行的仿真而设计的。该代码使用实验相关性对辐射周期中可能发生的燃料芯块和包壳的膨胀，裂变气体释放和破裂现象进行建模。该代码与其他程序的不同之处在于，它使用简化的模型来获得沿冷却通道的温度曲线，并假设存在两相流。该轮廓用于确定径向温度分布。该代码计算沿燃料棒的轴向温度分布和径向温度分布，该温度分布是药丸长度的一半。换句话说，轴向点与小球一样多。此外，该程序对溶胀和裂变气体释放的实验相关性进行建模，并对燃料颗粒和包壳进行热弹性分析。

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