跃移沙粒轨迹参数研究现状的论述

摘要

介绍了国内外对跃移沙粒轨迹参数的研究现状，指出了造成跃移沙粒轨迹多样性的原因有许多，但主要与沙粒的起跳角、起跳速度、降落角、降落速度、跃移高度和跃移距离这些参数有关。采用数值模拟、野外和沙风洞实验3种不同的研究方法对跃移沙粒轨迹参数进行了综合论述，发现了实验过程中的局限性，为之后的研究提供参考。%T his article introduces the research status of saltating sand's trajectory parameters at home and a‐broad .Although there are numerous reasons cause the diversity of saltating sand's trajectory ,the saltating sand's trajectory is related to the parameters w hich include the sand's take-off angle ,take-off speed ,angle of fall ,landing speed ,saltating height and saltating length .This article discusses comprehensively the saltat‐ing sand's trajectory parameters with three research methods which include numerical simulation ,the field and wind tunnel experiments .The article discovers the limitations in the process of experiment and provides suggestions for later research .