1) surface source model
面声源模型
1.
Given a reasonable radius value of the circular line source,the averaged pressure responses are identical to that of the circular surface source model,which avoids the complex computations and singularities of the point source model,moreover,the responses on the line sources are relatively uniform.
该模型是实际面声源模型的简化,即利用一个圆形线源替代整个面声源,将声源强度均分在整个线源上并取合理的半径值。
2) noise source model
声源模型
1.
The broadband noise source model based on the theory of Lighthill noise analogy is introduced to simulate the aerodynamic noise field of the fan.
通过引入基于Lighthill声学类比理论的宽频声源模型,对通风机内部气动噪声分布特性进行数值模拟,预测声功率分布情况,并提出相应的降噪措施,对通风机结构的优化设计及噪声控制具有重要的参考意义。
2.
Several popular noise source models are compared based on the TA method,and a variable length scale along the frequency is utilized.
本文在Tam&Auriault提出的喷流噪声预测方法的基础上,导得计算轴对称喷管伴随格林函数的方程以及声源谱、伴随格林函数与噪声谱密度函数之间的关系,比较了几种典型的声源模型,并且采用了一种随频率变化的长度尺度。
3) face source model
面源模型
1.
Therefore,the line and face source models are both analyzed for their convergence characteristics of sound pressure,which shows that the line source and face source models can be put to use,in computation.
然后详细讨论了点源和面源模型计算传递函数的区别,得出结论:面源模型更适合用于二维模型计算传递矩阵,收敛更快,可以消除点源模型计算的奇异性;点源模型可以计算体积流量的传递函数,但是计算压力传递函数会引起较大误差,这时需要用到面源模型。
4) model of random point sound source
随机点声源模型
1.
Aimed at certain types of building dispositions in urban residential region,the noise impacts of the underground garage is analyzed and calculated with the simulation model of random point sound source.
针对城市居住区2种典型的建筑布局,结合随机点声源模型,对居住区内地下车库噪声影响进行了分析计算。
2.
The model of random point sound source was applied to predict the noise of underground garage in urban residential region with the method of computer simulating.
运用随机点声源模型对城市居住区地下车库出入口噪声进行计算机模拟预测 ,通过实测值和预测值的比较 ,该预测模型精度较好 。
5) active noise control model
有源消声模型
1.
An active noise control model using adaptive algorithm is presented,and it has been used to attenuate the low-frequeny exhaust noise of a diesel.
提出一种采用自适应算法的有源消声模型 ,对柴油机低频排气噪声进行了实验 ,结果表明 ,此模型较为切实可行的。
6) circular line source model
圆形线声源模型
1.
A simplified circular line source model was proposed and the sound source strength was averagely distributed.
提出了一种简化的圆形线声源模型。
补充资料:蒸发面后退模型
分子式:
CAS号:
性质:在非吸附性多孔物料的减速干燥阶段,一般存在干燥区和湿区两部分。物料内部的内部蒸发实际上是在湿区的某处进行。但为了使问题简化起见,把内部蒸发看成仅在干燥区与湿区的交界面上进行,这样的模型即称为蒸发面后退模型。
CAS号:
性质:在非吸附性多孔物料的减速干燥阶段,一般存在干燥区和湿区两部分。物料内部的内部蒸发实际上是在湿区的某处进行。但为了使问题简化起见,把内部蒸发看成仅在干燥区与湿区的交界面上进行,这样的模型即称为蒸发面后退模型。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条