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Estimating particle concentration using passive ultrasonic measurement of impact vibrations

机译:使用无源超声测量冲击振动估算颗粒浓度

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摘要

A method of obtaining particle size and concentration information, from ultrasonic transducer measurements of particle-wall interactions in a particle laden fluid, is presented. A mathematical model of the flexural vibrations of the vessel wall due to the particle impact is constructed. The key component of this model is the derivation of an analytic expression for the impact force amplitude. An analytic expression for the power spectrum is then obtained that shows its explicit dependency on the system parameters. This spectrum is then integrated over a specific frequency range and a comparison with experimental results is reported.
机译:提出了一种从超声换能器对载有颗粒的流体中的颗粒-壁相互作用进行测量获得粒径和浓度信息的方法。建立了由于颗粒撞击而引起的容器壁弯曲振动的数学模型。该模型的关键部分是推导冲击力幅度的解析表达式。然后获得了功率谱的解析表达式,该表达式显示了其对系统参数的明确依赖性。然后在特定频率范围内对该频谱进行积分,并报告与实验结果的比较。

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