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nominal condition
相关语句
  额定工况
     The core loading pattern makes the radial power peak factor Fxy increase,the minimum DNBR under nominal condition and accident condition will decrease.
     长燃耗的堆芯装载布置使径向功率峰因子Fxy上升、额定工况和事故工况下的最小DNBR大幅度下降。
短句来源
  “nominal condition”译为未确定词的双语例句
     Using it the pressure drop,bypass in vessel and hydraulic forces and their balance at nominal condition can be calculated and analyzed.
     它可以计算正常运行工况下反应堆压力容器内的压降、旁流和水力学力以及它们的平衡。
短句来源
     Sensor measurement deviations from nominal condition are the only information for estimation of engine health parameters.
     卡尔曼滤波器根据发动机可测参数偏离额定特性时的变化量,对发动机性能参数进行了估计。
短句来源
  相似匹配句对
     The nominal vol.
     名义组分为vol.
短句来源
     and in stable condition.
     稳定条件下风速拟合公司为U=U_(10)(H/10)~(2.86)。
短句来源
     3 At the condition of O.
     结合顺序为HP_2O_7~(3-)>HPO_4~(2-)>Hcta~(2-)>SO_4~(2-)>Cl~-。
短句来源
     nominal praxis.
     虚设现实。
短句来源
     From the practical life time,the value of nominal stress corresponds with the production condition.
     从螺栓的实际运行寿命看 ,螺栓的名义应力幅计算值与实际情况相符合
短句来源
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  nominal condition
The output power at nominal condition is about 0dBm for both modes.
      
If an off-nominal condition exists, then an autonomous abort is conducted.
      
However, note that this nominal condition does not reflect the standard highway condition.
      


One of the way to enhance the economic benefit for nuclear power plant is to deepen burnup and extend reload cycle.If the burnup is deepened,the departure from nucleate boiling ratio DNBR limit will increase.The core loading pattern makes the radial power peak factor Fxy increase,the minimum DNBR under nominal condition and accident condition will decrease.If the overtemperature ΔT and overpower ΔT setpoints given in GNPS FSAR are used to analyze the accidents for GNPS improved fuel management study,which...

One of the way to enhance the economic benefit for nuclear power plant is to deepen burnup and extend reload cycle.If the burnup is deepened,the departure from nucleate boiling ratio DNBR limit will increase.The core loading pattern makes the radial power peak factor Fxy increase,the minimum DNBR under nominal condition and accident condition will decrease.If the overtemperature ΔT and overpower ΔT setpoints given in GNPS FSAR are used to analyze the accidents for GNPS improved fuel management study,which have lower DNBR margin,the results will not meet the DNBR safety criterion.In fact,the overtemperature ΔT and overpower ΔT setpoints will change along with the changes of DNBR safety criterion and Fxy,it is reasonable that formerly setpoints can not meet the safety requirement.So it is necessary to re determine the overtemperature ΔT and overpower ΔT setpoints.FLICA _F code and DELAT code are used to determine the overtemperature ΔT and overpower ΔT setpoints for long cycle.The results are used in control rod withdraw accident analysis,and the DNBR safety criterion are met.

加深燃耗和延长换料周期是提高核电站经济效益的手段之一。但燃耗加深后,偏离泡核沸腾比DNBR限制值将增大;长燃耗的堆芯装载布置使径向功率峰因子Fxy上升、额定工况和事故工况下的最小DNBR大幅度下降。在大亚湾核电站改进燃料管理初步可行性研究中分析那些DNBR裕量较小的事故时,如沿用《广东核电站最终安全分析报告》FSAR中给出的超温和超功率保护定值进行计算,其计算结果不能满足DNBR安全限制准则。分析其原因,是由于DNBR准则值和Fxy的改变,超温和超功率保护图也将随之变化,使原整定值不能满足安全要求。因此,需重新确定超温和超功率ΔT保护整定值。采用FLICAⅢ程序和DELTAT程序,对长燃耗条件下的超温和超功率ΔT整定值进行了初步研究,并将其结果应用于提棒事故分析,使该事故满足了DNBR安全准则。

The HYDCUV program is an important reactor hydraulic computer code.Using it the pressure drop,bypass in vessel and hydraulic forces and their balance at nominal condition can be calculated and analyzed.In short of information,the module and method of the code was analyzed with reading source code.The meaning of parameters and their influence are made clear by sensitivity research.The profound realization about the program is obtained.An engineering calculation with the program is done,the result is well...

The HYDCUV program is an important reactor hydraulic computer code.Using it the pressure drop,bypass in vessel and hydraulic forces and their balance at nominal condition can be calculated and analyzed.In short of information,the module and method of the code was analyzed with reading source code.The meaning of parameters and their influence are made clear by sensitivity research.The profound realization about the program is obtained.An engineering calculation with the program is done,the result is well consistent with the data of hydraulic simulation test.

HYDCUV程序是一个重要的水力学分析程序。它可以计算正常运行工况下反应堆压力容器内的压降、旁流和水力学力以及它们的平衡。在资料不足的情况下,通过剖析源程序对该引进程序的模型和方法进行了分析。通过敏感性研究,弄清了参数的意义及其影响的范围和大小,对该程序有了较深的理解和认识。用该程序进行了水力学工程计算,结果与水力模拟数据符合相当好

Model free flight experiments were carried out in impulse hypersonic wind tunnel at Institute of Mechanics, Chinese Academy of Sciences under the Mach number conditions of 6.26, 7.91 and 9.29 to obtain pitching damp for a typical space shuttle model. The model movements were recorded by synchronized high speed photography. The pitching damps of models were obtained by parameter identification using maximum likelihood method. The results show that within the scope of experimental condition the models are all...

Model free flight experiments were carried out in impulse hypersonic wind tunnel at Institute of Mechanics, Chinese Academy of Sciences under the Mach number conditions of 6.26, 7.91 and 9.29 to obtain pitching damp for a typical space shuttle model. The model movements were recorded by synchronized high speed photography. The pitching damps of models were obtained by parameter identification using maximum likelihood method. The results show that within the scope of experimental condition the models are all dynamically stable. The repeated experiments at same nominal condition show that models moved with same pattern and have close value of pitching damp. The variation of Mach number (from 6.26 to 7.91 ) and axis variation of model's center of gravity (from 0.50 to 0.60) cause little change of pitching damp and the value is about -1.5. The damp at Mach number 9.29 is relatively smaller possibly mainly due to the lower Reynolds number rather than higher Mach number. A simple nonlinear identification model was adopted and it seems that the results were improved to a little bit.

对具有典型意义的有翼航天飞行器模型在力学所JF 8A脉冲型高超声速风洞中M =6.2 6,M =7.91和M =9.2 9条件下进行了模型自由飞实验。由记录的运动经最大似然法作参数辨识后得到了它们的俯仰阻尼导数。实验结果显示 ,在实验范围内模型具有动态稳定性 ,同一名义实验条件下的重复性实验呈一致的运动规律并具有接近的动导数测量结果。实验范围内马赫数的变化 (从 6.2 6到 7.91 )以及模型质心位置的轴向移动 (从 0 .5 0到 0 .60 )没有导致俯仰阻尼系数的明显变化 ,其量值在- 1 .5附近。而马赫数 9.2 9时阻尼值变小 ,其主要原因可能是由雷诺数的变化所引起。此外 ,考虑恢复力矩的非线性影响后 ,辨识结果有所改善

 
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