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particle erosion Resistance of Bionic Samples Inspired from Skin Structure of Desert Lizard, Laudakin stoliczkana

Journal of Bionic Engineering 2012年第4期9卷 465-469页

作者： He Huang Yan Zhang Luquan Ren Key Laboratory of Bionic Engineering (Ministry of Education China) Jilin University Changchun 130022 P. R. China College of Mechanical Engineering Tianjin University of Science and Technology Tianjin 300222 P. R. China

In order to improve the particle erosion resistance of engineering surfaces, this paper proposed a bionic sample which is inspired from the skin structure of desert lizard, Laudakin stoliczkana. The bionic sample consists of a hard shell （aluminum） and a soft core （silicone rubber） which form a two-layer composite structure. The sand blast tests indicated that the bionic sample has better particle erosion resistance. In steady erosion period, the weight loss per unit time of the bionic sample is about 10% smaller than the contrast sample. The anti-erosion mechanism of the bionic sample was studied by single particle impact test. The results show that, after the impact, the kinetic energy of the particle is reduced by 56.5% on the bionic sample which is higher than that on the contrast sample （31.2%）. That means the bionic sample can partly convert the kinetic energy of the particle into the deformation energy of the silicone rubber layer, thus the erosion is reduced.

关键词： bionics particle erosion sand blast desert lizard

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Design optimization of guide vane for mitigating elbow erosion using computational fluid dynamics and response surface methodology

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Particuology 2022年第4期20卷 83-94页

作者： Anjun Li Zhenbo Wang Liyun Zhu Zengli Wang Jingyuan Shi Wensan Yang School of New Energy China University of Petroleum(East China)266580 ShandongChina CNPC East China Design Institute Co. Ltd.266071 ShandongChina

A90°elbow equipped with guide vanes was developed with the intent of reducing elbow erosion.Numerical models were formed to predict the maximum erosion rate of elbow and Face-1,and the response surface methodology was used to study the relationship between the erosion rate and structural parameters of guide vane.A second-order response surface model was established to determine the relationship between R and variables,and a reduced cubic(RC)polynomial model was obtained to reveal the relation-ship between R2 and the three factors.The numerical results show that the low-speed region is expended and the maximum discrete particle matter(DPM)concentration is reduced after installing the guide vane.This internal component provides a shelter for the elbow from the direct impact of high-speed solids.

关键词： Elbow particle erosion Guide vane Response surface methodology

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Experimental Investigation on Combustion Performance of Solid Propellant Subjected to erosion of particles with Different Concentrations

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Defence Technology（防务技术） 2011年第2期7卷 87-92页

作者：卢明章赵志博何国强刘佩进 Science and Technology on Combustion Internal Flow and Thermal-Structure LaboratoryNorthwestern Polytechnical University

A test device with rectangular channel is developed to study the combustion performance of solid propellant in high temperature particles erosion.The flowfields in this newdevice and a test device with circular channels are simulated numerically.The particle erosion experiments in these two devices are carried out under different particle concentrations.The results showthat the test device with rectangular channel can effectively improve the clarity and precision of combustion diagnosis image and can be used for research on combustion performance of solid propellant under lowconcentration particle erosion;the circular channel device has good particle convergent effect,provides high concentration particle erosion,and can be used for research on the combustion performance of solid propellant under high concentration particle erosion.The experiment data indicates that the propellant burning rate does not change obviously in lower particle concentration;the propellant with lower static burning rate increases remarkably under particle erosion,while the propellant with high static burning rate is not sensitive to the particle erosion.

关键词： propulsion system of aviation &aerospace solid propellant particle erosion combustion performance maximum burning rate increment ratio

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