Using the CFD numerical simulation software, noise level of the power section have been calculated. Then aerodynamic noise level under the four characteristic speeds and two sets of blade has been got.
应用CFD数值仿真计算软件,对某风洞动力段模型进行了气动噪声计算,得到了以基础叶型和改型叶型为基础的两组风扇在四个特征转速下的气动和噪声数据。
参考来源 - 风洞风扇的低噪声桨叶设计·2,447,543篇论文数据，部分数据来源于NoteExpress
利用时域有限差分方法分析了动力段飞行体的等离子体高温尾焰对飞行体电磁脉冲效应的影响。
The purpose of this paper is to use the Finite Difference Time Domain (FD TD) method to determine numerically the influence of plasma exhaust plume to boost flyer on electromagnetic pulse effects.
现在，它又经历了一段恐慌时期，这对大部分劳动力来说是个坏消息，尤其是对最年轻的成员。
And now it is experiencing another period of panic, which is bad news for much of the workforce but particularly for its youngest members.
现在，它又经历了一段恐慌时期，这对大部分劳动力来说是个坏消息，尤其是对最年轻的成员。
Now it is experiencing another period of panic, which is bad news for much of the workforce but particularly for its youngest members.
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