Optimization designs of artificial facilities in deserts based on computational simulation

作     者：DUN Hongchao HUANG Ning ZHANG Jie DUN Hongchao;HUANG Ning;ZHANG Jie

作者机构：Key Laboratory of Mechanics on Disaster and Environment in Western ChinaLanzhou UniversityLanzhou 730000China 

基　　金：This research was supported by the National Natural Science Foundation of China(11772143,11702163,41730644) the National Key Research and Development Program of China(2016YFC0500901) 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2021年第13卷第3期

页      码：290-302页

摘      要：Sediment transport of sand particles by wind is one of the main processes leading todesertification in arid regions, which severely impairs the ability of mankind to produce and live by driftingsand into settlements. Optimization designs of artificial facilities have lately attracted extensive interest forhuman settlement systems in deserts because of their acceptable protection effect, convenience ofimplementation, and low material cost. However, the complexity of a settlement system poses challengesconcerning finding suitable materials, artificial facilities, and optimization designs for sand depositionprotection. In an effort to overcome these challenges, we propose a settlement system built with brick, solarpanel, and building arrays to meet the basic needs of human settlements in arid regions while preventingwind-sand disasters. The wind flow and movement characteristics of sand particles in the brick, panel, andbuilding arrays were calculated using computational fluid dynamics and discrete phase model. Theperformance of three types of arrays in wind-sand flow in terms of decreasing the wind velocity and sandparticleinvasion distance was evaluated. The results show that the wind velocity near the surface and thesand invasion distance were significantly decreased in the space between the brick arrays through properlyselected vertical size and interspaces, indicating that the brick arrays have an impressive sand fixing andblocking performance;their effective protection distance was 3–4 m. The building arrays increased the nearsurfacewind velocity among buildings, resulting in less deposition of sand particles. The solar panel arrayswere similar to the building arrays in most cases, but the deposition of sand particles on solar panels exerteda negative effect on energy utilization efficiency. Therefore, taking the optimal configuration of thesettlement system into consideration, this study concludes that (1) brick arrays, which were proven effectivein preventing s

主 题 词：desert city sand deposition optimization wind flow sand movement 

学科分类：07[理学] 09[农学] 0903[农学-动物生产类] 0713[0713] 

核心收录：

D　O　I：10.1007/s40333-021-0059-4

馆 藏 号：203102919...