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Search for "drag-reducing microtexture" in Full Text gives 1 result(s) in Beilstein Journal of Nanotechnology.

Investigation on drag reduction on rotating blade surfaces with microtextures

Qinsong Zhu,
Chen Zhang,
Fuhang Yu and
Yan Xu

Beilstein J. Nanotechnol. 2024, 15, 833–853, doi:10.3762/bjnano.15.70

the microtexture decreased energy loss by 3.7% for a single blade under 57° angle of attack and 136.24 m/s, which was favorable regarding the drag reduction performance of the impeller with 45 blades. Keywords: blade; drag-reducing microtexture; geometrical parameters; placement position; simulations

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Figure 1: Microtextures with different sectional shapes: (a) triangles; (b) trapezoids, and (c) ellipses. The...

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Figure 2: (a) Axial flow compressor [27] and (b) schematic of the impeller with 45 blades. Figure 2(a) was reproduced fro...

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Figure 3: Flow chart of the simplified numerical simulation method. Images used courtesy of ANSYS, Inc.

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Figure 4: The size of flow domain and the single blade.

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Figure 5: Meshed model of (a) a smooth blade surface and (b) a microtextured surface with 0.005 mm height of ...

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Figure 6: Characteristic parameters of (a) grooves and (b) ribs.

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Figure 7: The manufacturing procedure of the microtextured blade.

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Figure 8: Experimental platform and schematic diagram. (a) Wind tunnel test platform. (b) Three-hole probe me...

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Figure 9: Single blade and simulation results. (a) Slices of the calculation domain. (b) Simulation results o...

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Figure 10: Simulation values of attack angle at (a) span = 0.25, (b) span = 0.50, and (c) span = 0.75. x is th...

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Figure 11: The distribution of (a) k and (b) the flow field on the blade surface. Figure 11b used courtesy of ANSYS, Inc....

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Figure 12: DRR results of four microtextures with different sizes. The formula for calculating DRR is shown in...

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Figure 13: Comparison of coefficient of friction (C_f) on the surface of (a) rectangle and triangle 1, (b) tria...

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Figure 14: (a) Static pressure and (b) turbulent kinetic energy distribution of blade surfaces with different ...

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Figure 15: Influence of (a) height, (b) width, and (c) spacing of microtextures on drag reduction performance.

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Figure 16: The effect of microtexture on (a) turbulent kinetic energy and (b) eddy viscosity ratio around blad...

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Figure 17: The effect of microtexture on (a) turbulent vortex and (b) overall shear stress distribution. Figure 17a used...

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Figure 18: The processed blade with microtexture.

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Figure 19: Microscopy observation of (a) microribs surface morphology and (b) blade surface morphology.

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Figure 20: Machining error analysis diagram of (a) the microtexture and (b) plane processing.

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Figure 21: Distribution of LC_TP of the single flow channel at angles of attack of (a) 52.8°, (b) 54.8°, and (c...

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Figure 22: Distribution of Ma in the outlet of the single flow channel at angles of attack of (a) 52.8°, (b) 5...

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Figure 23: Comparison between the simulation value and the experimental value of η_ξ.

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Published 10 Jul 2024

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