文物保护与考古科学2025，Vol.37Issue(5)：149-156,8.DOI:10.16334/j.cnki.cn31-1652/k.20240503255
庆阳北石窟寺风驱雨崖面潮湿分布的CFD模拟研究
CFD simulation study of moisture distribution on wind-driven rain cliff faces in Beishiku Temple,Qingyang
摘要
Abstract
Beishiku Temple,an important part of China's ancient cultural heritage,has been frequently affected by erosion caused by precipitation and seepage in recent years.These forms of deterioration pose a serious threat to the safety and preservation of the site.Wind-driven rain(WDR),as a particular form of precipitation phenomenon,has inflicted significant moisture damage to the cliff faces of the grottoes.In this study,computational fluid dynamics(CFD)simulation was employed to evaluate the shielding performance of the existing temporary rain shelters against WDR and to investigate the distribution of cliff moisture under varying heights,cantilever distances,and rainfall intensities.The results provide a scientific basis for the conservation of the grottoes. An on-site investigation was conducted at Beishiku Grottoes in Qingyang,during which the necessary meteorological data were collected.The computational model was simplified to reflect the actual site situation.Prior to the simulation,a detailed analysis of the topographical features,wind speed,wind direction,and rainfall intensity of the grottoes was carried out,and appropriate boundary conditions were established.The feasibility of the simulation platform was verified through error cause analysis and comparison with actual monitoring data to ensure the reliability of the simulation results.The Eulerian-Lagrangian method combined with the discrete phase model(DPM)was applied to simulate CFD of the WDR conditions in the grotto area.During the simulation,flow field control equations for the wind and rain phases were first established,and WDR conditions under varying rainfall intensities-light rain,moderate rain,and heavy rain-were simulated through iterative solutions. The results show that the existing temporary rain shelters exert a significant shielding effect on WDR to the grottoes,significantly reducing the moisture content of the cliff face.A cantilever distance of 2 m provided an ideal shielding effect for certain areas;while cantilever distances of 3-4 m achieved a better overall shielding effect.These findings indicate that adjusting the cantilever distance of the cliff face can effectively improve the moisture conditions of the grotto cliff face,offering an important reference for the design and implementation of conservation measures. The innovation of this research lies in providing a scientific theoretical basis and design reference for conservation measures tailored to grottoes in specific climatic regions of China.Beyond its practical significance for the preservation of the Beishiku Grottoes in Qingyang,this study also offers theoretical support and reference data for the conservation of grottoes under similar climatic conditions,demonstrating important value for both academic exchange and practical application.关键词
风驱雨/北石窟寺/CFD/潮湿分布/潮湿占比Key words
Wind-driven rain/Beishiku Temple/CFD/Moisture distribution/Proportion of moisture分类
社会科学引用本文复制引用
孟祥武,王永昊,裴强强,韩增阳..庆阳北石窟寺风驱雨崖面潮湿分布的CFD模拟研究[J].文物保护与考古科学,2025,37(5):149-156,8.基金项目
国家自然科学基金(51868043)资助 （51868043）
