Version 1
: Received: 24 October 2024 / Approved: 25 October 2024 / Online: 25 October 2024 (11:49:59 CEST)
How to cite:
Liu, Z.; Zhu, L.; Li, Y. T.; Lu, L.; Wang, P. W.; Meng, L. Sediment Abrasion Mechanism at the Leading Edge of an Airfoil: Insights from NACA0012 Wear Tests. Preprints2024, 2024102034. https://doi.org/10.20944/preprints202410.2034.v1
Liu, Z.; Zhu, L.; Li, Y. T.; Lu, L.; Wang, P. W.; Meng, L. Sediment Abrasion Mechanism at the Leading Edge of an Airfoil: Insights from NACA0012 Wear Tests. Preprints 2024, 2024102034. https://doi.org/10.20944/preprints202410.2034.v1
Liu, Z.; Zhu, L.; Li, Y. T.; Lu, L.; Wang, P. W.; Meng, L. Sediment Abrasion Mechanism at the Leading Edge of an Airfoil: Insights from NACA0012 Wear Tests. Preprints2024, 2024102034. https://doi.org/10.20944/preprints202410.2034.v1
APA Style
Liu, Z., Zhu, L., Li, Y. T., Lu, L., Wang, P. W., & Meng, L. (2024). Sediment Abrasion Mechanism at the Leading Edge of an Airfoil: Insights from NACA0012 Wear Tests. Preprints. https://doi.org/10.20944/preprints202410.2034.v1
Chicago/Turabian Style
Liu, Z., Peng Wan Wang and Long Meng. 2024 "Sediment Abrasion Mechanism at the Leading Edge of an Airfoil: Insights from NACA0012 Wear Tests" Preprints. https://doi.org/10.20944/preprints202410.2034.v1
Abstract
Multiple engineering projects have confirmed that hydraulic machinery operating in sediment-laden rivers suffers from sediment abrasion. Guide vanes are among the most severely worn flow-passing components and have long been a key research focus in hydraulic machinery. This study conducted wear tests using asymmetric incoming flow with a 10° impact angle and an NACA0012 aluminum alloy airfoil as the research object. The development of wear was analyzed, revealing that it primarily occurs at the airfoil’s leading edge and progresses through three stages: initiation, development, and stabilization. The Finnie model was used to analyze the initial wear mechanism, with calculated results closely matching the latest wear outcomes. In the initial stage, wear rate density was influenced by particle impact velocity, angle, volume fraction, and y-direction shear stress. A low-velocity zone near the impact point, combined with rebounding particles causing secondary impacts, increases particle volume fraction and wear rate density. These secondary impacts are the primary causes of wear on both the upstream and downstream surfaces. Furthermore, flow separation downstream of the leading edge makes this region highly susceptible to wear. This study provides valuable insights for addressing wear in hydraulic machinery for practical engineering applications.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
