• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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Volume 19 Issue 2
Apr.  2006
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Article Contents
WANG Weidong, JIA Jianyuan. Damping Characteristics of Microfluid on Perforated Disks with a Centre Hole[J]. Journal of Southwest Jiaotong University, 2006, 19(2): 218-222.
Citation: WANG Weidong, JIA Jianyuan. Damping Characteristics of Microfluid on Perforated Disks with a Centre Hole[J]. Journal of Southwest Jiaotong University, 2006, 19(2): 218-222.

Damping Characteristics of Microfluid on Perforated Disks with a Centre Hole

  • Received Date: 12 Jun 2005
  • Publish Date: 25 Apr 2006
  • Based on the equations of gap flow and squeezed flow,the viscous-modified solution under the slip boundary condition was obtained to calculate the damping characteristic of microfluid acting on a perforated disk with a centre hole.The correlation between the kinetic damping and dimensions of the perforated disk,such as the gap and the radius of the centre hole and the thickness of the disk,was obtained.An analytical expression of damping composed of slide film damping and squeeze film damping was presented.It was found that the damping of microfluid acting on the disk is correlative with surface characteristics of the disk.Suitable equivalent viscosity can be obtained by introducing a momentum accommodation coefficient to calculate the damping forces of microfluid acting on moving objects.A calculation example shows that the analytical solutions accord well with the numerical results obtained with finite element method.

     

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  • MEHNER J,KURTH S,BILLEP D,et al.Simulation of gas damping in microstructures with nontrivial geometries[C] //Proc.of 11th Annual Int.Workshop on Micro Electro Mechanical Systems.Heidelberg,Germany,1998,Piscataway,NJ,USA:IEEE,1998:172-177.[2] BAO Minhang,YANG Heng,SUN Yuancheng,et al.Modified Reynolds' equation and analytical analysis of squeeze-film air damping of perforated structures[J].J.Micromech.Microeng,2003,13(6):795-800.[3] 张梓雄,董曾南.粘性流体力学[M].北京:清华大学出版社,1999:64.[4] 沈青著.稀薄气体动力学[M].北京:国防工业出版社,2003:185.[5] TIMO V J,HEIKKI K S.Equivalent-circuit model of the squeezed gas film in a silicon accelerometer[J].Sensors and Actuators,A Physical,1995,48(3):239-248.[6] WHITEJ W,RAADPE.Effect of a rough translating surface on gas film lubrication:a numerical and analytical study[J].Journal of Tribology,Trans.ASME,1987,109(4):271-275.[7] KOO J M,Clement K.Liquid flow in microchannels:experimental observations and computational analyses of microfluidics effects[J].J.Micromech Microeng,2003,13(5):568-579.
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