Numerical Simulation of Rotary Self-cleaning Air Pre-filter Based on CFD

doi:10.3969/j.issn.1000-1093.2014.03.018

Abstract

Abstract: An effective computational method is provided for the design and performance optimization of new efficient air pre-filter. The method can be used for the numerical simulation of transient turbulent flow in air pre-filter. A 3D geometric model of rotary self-cleaning air pre-filter flow channel is established by FARO-LDI 3D laser scanning measurement system which is used for reverse modeling. The hybrid grid of flow channel is generated by ANSYS ICEM CFD. The passive rotation of the rotating impeller is achieved by the user-defined function and the sliding mesh model of the multi-flow region coupling algorithm in Fluent. The RNG k-ε turbulence model and PRESTO pressure discrete format are used in the simulation, SIMPLE algorithm with first order upwind format is used for pressure-velocity coupling, and the central difference scheme is also used in the diffusion and pressure terms of the momentum equation. The results show that this method can be used accurately to calculate the flow field of air pre-filter and simulate the passive rotation state of rotating impeller.

Key words: fluid mechanics, air pre-filter, reverse engineering, computational fluid dynamics, user-defined function, numerical simulation

CLC Number:

TK413.4₊6

TAN Ye-fa， DONG Gui-yang， TAN Hao-guang， TAN Hua， WANG Xiao-long. Numerical Simulation of Rotary Self-cleaning Air Pre-filter Based on CFD[J]. Acta Armamentarii, 2014, 35(3): 409-414.

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