A Numerical Study on the Performance of a Magnesium-Based Automotive Cooling Fan with Bead Structure
Publish place: Journal of Applied Fluid Mechanics، Vol: 14، Issue: 1
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-14-1_002
تاریخ نمایه سازی: 15 دی 1400
Abstract:
This paper presents the numerical analysis of three types of magnesium-based, axial-flow automotive cooling fans. The numerical modeling is conducted for geometrically modified fan designs with and without bead structure. The effect of geometric modifications of the fan blades on the fan performances (P-Q curve), fan efficiency, and energy efficiency is investigated using unsteady Reynolds-Averaged Navier-Stokes (URANS) equations with the sliding mesh methodology. The baseline fan having no-beads is fabricated using ۳D printing technology and tested to measure the flow velocity and volumetric flow rate which shows good agreement to the numerical results. Subsequently, fans with beads are further optimized to achieve a significant increase in fan performances. To investigate the fan vibrations, modal analysis is also carried out using magnesium-alloy AZ۳۱ as the fan material. The modal analysis gives natural frequencies of all types of fans which are beyond the fan rotational frequency and seems satisfactory.
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Authors
K. H. Hur
School of Mechanical Engineering, Kyungpook National University, Daegu, ۴۱۵۶۶, Korea
B. A. Haider
School of Mechanical Engineering, Kyungpook National University, Daegu, ۴۱۵۶۶, Korea
C. H. Sohn
School of Mechanical Engineering, Kyungpook National University, Daegu, ۴۱۵۶۶, Korea