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Research on Optimization of Vibration and Structural Noise of Centrifugal Pump

Author: YeJianPing
Tutor: XiangYang
School: Wuhan University of Technology
Course: Marine Engineering
Keywords: Centrifugal pumps FEM BEM Optimization Acoustic field
CLC: TB535
Type: Master's thesis
Year: 2006
Downloads: 644
Quote: 10
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Abstract


Structural vibration and acoustic noise control optimization is an important field of research . In this paper, IS100-65-315 centrifugal pump for the specific object of study, noise prediction and optimization of structural control of a preliminary study . Major tasks include: Centrifugal internal flow channel model, centrifugal flow field analysis ( radial force calculation ) ; centrifugal pump vibration finite element modeling studies , acoustic BEM modeling studies ; : Based on the Finite Element Method centrifugal pump vibration response analysis, based on the boundary element method radiated noise prediction ; centrifugal pump base thickened radiated noise prediction . Firstly, their predecessors in the direction of vibration and noise control research results are summarized , a clear focus of this research work and the need to address the main problem, and then the finite element method and finite element software used in this article (CFX, Patran / Nastran and Sysnoise) were introduced. This paper studies the IS100-65-315 centrifugal flow field , according to the centrifugal impeller channel geometry and flow field characteristics, discusses the centrifugal impeller passage structured meshing some of the processing methods, while applying the standard k- ε turbulence model on centrifugal pump impeller three-dimensional turbulent flow in the Reynolds averaged NS equations numerical calculation and analysis . Analysis of the centrifugal impeller rotational velocity distribution, pressure distribution , studied law centrifugal impeller flow channel , obtained acting on the volute radial force variation . By considering only the radial force, using the finite element analysis software Patran / Nastran conducted a centrifugal pump vibration response analysis . Centrifugal pump is energized calculating the vibration displacement , vibration velocity ; and put in Patran / Nastran finite element model was created and the calculated vibration velocity carried into Sysnoise acoustic field analysis to calculate the sound field radiated sound pressure points midfield harmony pressure level , while research on centrifugal pump centrifugal pump section shape change the power structure radiated noise impact . This paper methods of the study and the conclusions to other scholars in this field of research with a reference value .

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use
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