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A 4-DOF bearing dynamic mathematical model is established for the deep groove ball bearing 6201. The vibrating characteristics of deep groove ball bearing such as displacement, velocity and acceleration are solved by four order Runge-Kutta Method and Matlab. The frequency of rolling element passing outer-circle and the simulation value based on the model are calculated, and they have a good coherence...
In order to optimize the indoor environment in large space and improve the attached ventilation theory, a novel ventilation mode, Circular Column Attached Ventilation (CCAV), is proposed. It is found that RSM model simulation could predict CCAV ventilation well by comparing the results of RSM model and experimental data. In this paper, the ventilation efficiency under different supply air velocities...
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