Numerical Analysis of Erosion Caused by Biomimetic Axial Fan Blade

Zhang, Junqiu; Han, Zhiwu; Cao, Hui-Na; Yin, Wei; Niu, Shichao; Wang, Huiyuan

doi:10.1155/2013/254305

Cited by 16 publications

(2 citation statements)

References 22 publications

(32 reference statements)

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“…Simulations and experiments conducted on centrifugal fan blades with similar grooves improved the anti-erosion property by 28.97% [37]. Numerical analysis of erosive wear of biomimetic axial fan blade that was inspired by the desert scorpion [39] showed improved erosion resistance. The surface morphology of sea-shells having corrugated surface do survive in slurry environment and may lead to development of newer surface patterns for PCS surfaces [40].…”

Section: Introductionmentioning

confidence: 95%

Experimental investigations on erosion of carbon steels involving textured surfaces

Verma¹

2020

Surf. Topogr.: Metrol. Prop.

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The paper aims to report the comparative of erosion on conventional vis a vis textured carbon steel surfaces wherein alumina particles have been used as erodent. Shaping and stamping processes were employed to prepare textured surfaces on carbon steel that comprised of trapezoidal and rasp shapes. Experiments were performed employing alumina particles as erodent striking the carbon steel plates at the impact angles of 15°, 30°and 45°. With due consideration to the particle aspect during exploration, the erodent was made to strike the surface with two impact velocities of 30m s −1 and 60 m s −1 . With the aforesaid parameters and surface condition, experiment was performed for both unhardened and hardened surfaces (total 36 test specimen were used). Textured carbon steel (comprising trapezoidal shape) yielded significant reductions (40%-50%) in erosion in comparison to the conventional case. The reduction in erosion for rasp shape specimen was in a range of 15%-17%. It is worth noting here that the presence of texture has immensely contributed in erosion reduction of unhardened samples as compared to the hardened conventional samples.

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Section: Introductionmentioning

confidence: 95%

Experimental investigations on erosion of carbon steels involving textured surfaces

Verma¹

2020

Surf. Topogr.: Metrol. Prop.

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“…Zhang et al [26] presented a new method to improve the erosion resistance of machine components by biomimetic method. The discrete phase model was used for modeling the solid particles flow, and the Eulerian conservation equations to the continuous phase.…”

Section: Introductionmentioning

confidence: 99%

Erosion of an Axial Transonic Fan due to Dust Ingestion

EL-Saied¹

2015

AJAE

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This paper deals with the prediction of the particle dynamic and erosion characteristics due to dust ingestion in an axial flow fan, installed in a high bypass-ratio turbofan engine that operates in a dusty environment. Dynamic behavior comprises the particle trajectory and its impact velocity and location. While the erosion characteristics are resembled by the impact frequency, erosion rate, erosion parameter and the penetration rate. The study was carried out in two flight regimes, namely, takeoff, where the sand particles are prevailing, and cruise, where the fly ashes are dominated. In both cases, the effect of the particle size on its trajectory, impact location, and the erosion characteristics was studied. To simulate the problem in a more realistic manner, a Rosin Rambler particle diameter distribution was assumed at takeoff and cruise conditions. At takeoff, this distribution varies from 50 to 300 µm with a mean diameter of 150 µm sand particles. While at cruise, this distribution varies from 5 to 30 µm with a mean diameter of 15 µm fly ash particles. The computational domain employed was a periodic sector through both the fan and its intake bounding an angle of (360/38) where the number of fan blades is (38). The intake is a stationary domain while the fan is a rotating one and the FLUENT solver is used to solve this problem. Firstly, the flow field was solved in the computational domain using the Navier-Stokes finite-volume supported by the Spalart-Allmaras turbulence model. The governing equations, representing the particle motion through the moving stream of a compressible flow are introduced herein to calculate the particle trajectory. The solution of these equations is carried out based on the Lagrangian approach. Next, empirical equations representing the particle impact characteristics with the walls are introduced to calculate the rebound velocity, the erosion rate, erosion parameter, impact frequency and penetration rate. Moreover, a method to smoothen the irregularity in the calculated scattered data was discussed as well. During takeoff flight regime, the pressure side of fan blade experienced higher particle impact and erosion damage. The highest erosion rate was found at the corner formed by blade tip and trailing edge of pressure side. During cruise conditions, less erosion rates resulted. Maximum erosion rates are found at the leading edge of the pressure side.

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