气候变化领域集成服务门户(CCPortal): Surrogate-based aerodynamic optimization for enhancing the shelter effect of porous fences on a triangular prism

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DOI	10.1016/j.atmosenv.2020.117922
	Surrogate-based aerodynamic optimization for enhancing the shelter effect of porous fences on a triangular prism
	Qiu Y.; San B.; He H.; Zhao Y.
发表日期	2021
ISSN	1352-2310
卷号	244
英文摘要	To further improve the shelter effect of porous fences on the wind erosion of a triangular prism pile of coal, an aerodynamic optimization procedure has been developed, by coupling computational fluid dynamics (CFD) solver, kriging model and genetic algorithm. Two-dimensional Reynolds- Averaged Navier-Stokes equations with the RNG k-ε turbulence model were used for numerical simulation of the shelter behaviour. The single and multi-objectives were minimizing the sum of absolute mean pressure coefficients on the surface of the prism, and/or the total peak velocity ratio values around the prism. Two case studies focusing on the optimization design of a single front fence and dual fences were presented, in order to determine the optimal fence parameters (height and porosity). The weighted-sum method was utilized to solve multi-objective problems, which finds the Pareto-optimal front one by one by changing the objective weighting coefficients. The results showed that the optimal design of porous fence provided a remarkable shelter performance improvement compared with the near optimal design. It was also found that the weighting coefficient had a significant influence on the optimal results, and a good trade-off between the two conflicting objective functions has been achieved by selecting suitable fence parameters. © 2020 Elsevier Ltd
关键词	Aerodynamic optimization CFD modeling Porous fence Shelter effect Wind erosion
语种	英语
scopus关键词	Aerodynamics; Computational fluid dynamics; Economic and social effects; Fences; Genetic algorithms; Optimal systems; Pareto principle; Piles; Prisms; Turbulence models; Aerodynamic optimization; Conflicting objectives; Mean pressure coefficients; Multi-objective problem; Optimization design; Pareto-optimal front; Reynolds Averaged Navier-Stokes Equations; Weighting coefficient; Navier Stokes equations; coal; aerodynamics; computational fluid dynamics; genetic algorithm; numerical model; optimization; turbulence; wind erosion; Article; computational fluid dynamics; height; kriging; porosity; pressure; priority journal; process optimization; simulation; surface property; velocity; wind erosion
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248848
作者单位	College of Civil and Transportation Engineering, Hohai University, Nanjing, 210098, China
推荐引用方式 GB/T 7714	Qiu Y.,San B.,He H.,et al. Surrogate-based aerodynamic optimization for enhancing the shelter effect of porous fences on a triangular prism[J],2021,244.
APA	Qiu Y.,San B.,He H.,&Zhao Y..(2021).Surrogate-based aerodynamic optimization for enhancing the shelter effect of porous fences on a triangular prism.ATMOSPHERIC ENVIRONMENT,244.
MLA	Qiu Y.,et al."Surrogate-based aerodynamic optimization for enhancing the shelter effect of porous fences on a triangular prism".ATMOSPHERIC ENVIRONMENT 244(2021).