Abstract
The computational model of textured surfaces is highly nonlinear, and the texturing parameters interact with each other. The Fourier Amplitude Sensitivity Test(FAST) method was introduced to calculate the first-order sensitivity indices of texturing parameters to the tribological characteristics. Results show that both the inlet suction and the cumulative effect influence the tribological performance, but which mechanism plays the leading role is related to the convergence ratio. Besides, the texture density along the velocity direction is the most crucial geometric parameter; the effects of the cell size and the bottom profile are negligible. The sensitivity indices provide a novel perspective to quantify the influence of input on the output and the FAST method proved ideally suited to the texturing model.
Published Version
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