将子结构法和双倒易边界元法联合应用于预测具有三维复杂流存在时管道和消声器的四极参数与传递损失,阐述其基本原理与数值过程。
A substructure method and a dual reciprocity boundary element method (DRBEM) are applied to calculate four-pole parameters and transmission loss of ducts and silencers with complex flow.
根据输送边界条件,给出了动态模型方程的数值计算方法、管道离散格式、参数存储方法和差分方程。
Based on transmission boundary condition, gives calculation method for value of dynamic model equation, pipeline discrete form, memory method for coefficient and difference equation.
研究结果表明,在一定参数值和固定边界条件下,反应体系经由时间-空间对称破缺分支能够产生温度波。
It is shown that the temperature wave can appear beyond spatiotemporal symmetry-breaking bifurcation at a certain constraint controlled externally and a fixed boundary condition for the model system.
确定了边界条件和计算参数后对汽车外流场进行了数值模拟计算。
The boundary condition and the computation parameters ware defined. Last, the fields of the pick-up truck ware calculated.
通过数值求解边界积分方程组,对流量、水面线和边壁压力等水力参数进行了数值模拟。
The flow parameters such as discharge, free surface profile and boundary pressure distribution are simulated by numerical calculating the boundary integral equations.
由于恰当的边界条件对于数值模拟相当重要,因此文中所有活塞风参数均由SES得出。
As the proper boundary conditions is important for the numerical simulation, so all the piston wind parameters are obtained by the SES in this paper.
本文用动态测试与边界元法数值计算相结合的方法来识别薄板结构的边界支承的刚度参数。
In the paper, an approach linking dynamic measurement and BEM is proposed to identify the bound-ary rotating stiffness of a thin plate structure.
本文用动态测试与边界元法数值计算相结合的方法来识别薄板结构的边界支承的刚度参数。
In the paper, an approach linking dynamic measurement and BEM is proposed to identify the bound-ary rotating stiffness of a thin plate structure.
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