Influence of input voltage on the structural and fluid flow characteristics and proposed working condition of a micro-blower
参考中译:输入电压对微型鼓风机结构、流动特性的影响及工作条件的研究


          

刊名：Flow Measurement and Instrumentation
作者：Velmurugan K（Mechanical Engineering Department, National Institute of Technology Warangal）
Bharath Sanjeevi（Mechanical Engineering Department, National Institute of Technology Warangal）
Adarsh Shrivastav（Mechanical Engineering Department, National Institute of Technology Warangal）
Chandramohan VP（Mechanical Engineering Department, National Institute of Technology Warangal）
Karthik Balasubramanian（Mechanical Engineering Department, National Institute of Technology Warangal）
Karunanidhi S（Defence Research & Development Organization, Research Centre Imarat）
刊号：725C0062
ISSN：0955-5986
出版年：2023
年卷期：2023, vol.94
页码：102482-1--102482-14
总页数：14
分类号：TH81
关键词：Micro-blower；Piezoelectric material；Micro pump；Electronic cooling；PZT-5H；Finite element method
参考中译：微型鼓风机；压电材料；微型泵；电子冷却；PZT—5H；有限元法
语种：eng
文摘：Several methods are explored for the thermal management of highly packed electronic systems. A forced convection setup called micro-blower is an effective solution for the application of heat removal and it consists of a piezoelectric disc (PED), diaphragm, ring and a top plate. A numerical model is developed to study the influence of input voltage on the micro-blower using COMSOL Multiphysics. The size of the micro-blower selected is 20 × 20 × 3 mm~3. Structural characteristics such as Eigen frequency, diaphragm displacement and von Mises stress and output characteristic such as velocity at the nozzle exit, the volumetric flow rate of air, density variation in the fluid domain and pressure gradient of air at the nozzle for various voltage inputs (peak-to-peak voltage, V_(p-p)) from 5 to 20 V were estimated. The diaphragm displacement of the blower was estimated with various input voltages. An average nozzle velocity of 21.21 m/s was achieved with an average volumetric flow rate of 10.66 × 10~(-6) m~3/s for the voltage input of 20 V_(p-p). The von Mises stresses of PED, diaphragm, ring and top plate were 3.38, 6.38, 15.72 and 88.97 MPa and these were within the maximum yield strength of respective components at 20 V and hence the micro-blower design is safe. The proposed Eigen frequency in the ultrasonic range was 21.298 kHz and the proposed input voltage as per the breakdown voltage was 20 V. The results were compared with existing literature data and found promising agreement.
参考中译：探索了几种用于高密度电子系统热管理的方法。一种被称为微型鼓风机的强制对流装置是一种有效的散热解决方案，它由压电盘(PED)、振膜、环和顶板组成。利用COMSOL多物理模型建立了输入电压对微型鼓风机影响的数值模型。所选微型鼓风机的尺寸为20×20×3 mm~3。在5~20V的不同电压输入(峰-峰电压，Vp-p)下，估算了喷嘴出口速度、空气体积流量、流体密度变化和喷嘴空气压力梯度等结构特性和输出特性。在不同输入电压下，估算了鼓风机的膜片位移。在输入电压为20Vp-p时，平均喷嘴速度为21.21m/S，平均体积流量为10.66×10-6m~3/S。PED、隔膜、环和顶板的等效应力分别为3.38、6.38、15.72和88.97 Mpa，均在20V时各部件的最大屈服强度范围内，因此微风机的设计是安全的。在超声范围内，建议的本征频率为21.298 kHz，根据击穿电压建议的输入电压为20V。将结果与现有的文献数据进行了比较，发现有希望的一致。



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