HyPer SMM wind tunnel tests: PTV pictures

In this study, windblown sand transport on flat ground is reproduced by means of Wind-Sand Tunnel Tests (WSTT) carried out in the wind tunnel L-1B of von Karman Institute for Fluid Dynamics. The aim of WSTT is twofold. On one hand, they are intended to characterize the incoming sand flux in open field conditions. On the other hand, they allow to properly tune cheaper Wind-Sand Computational Simulations. The wind tunnel setup implements a uniform 5-meter-long sand fetch as sand source. The sand flux saltation layer are characterized through Particle Tracking Velocimetry (PTV) technique. Sand transport is assessed along the sand fetch by setting the wind speed equal to 1.3, 1.5, 2 times the threshold one. For the complete wind tunnel setup and data analysis please refer to: Raffaele L., Coste, N., and Glabeke G. "Life-Cycle Performance and Cost Analysis of Sand Mitigation Measures: Toward a Hybrid Experimental-Computational Approach." Journal of Structural Engineering 148.7 (2022): 04022082. The study has been developed in the framework of the MSCA-IF-2019 research project Hybrid Performance Assessment of Sand Mitigation Measures (HyPer SMM, https://hypersmm.vki.ac.be/). This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant Agreement No. 885985本研究依托冯·卡门流体动力学研究所（von Karman Institute for Fluid Dynamics）L-1B风洞开展的风沙隧道试验（Wind-Sand Tunnel Tests, WSTT），实现平坦地面风沙输运过程的物理重现。该试验的研究目标分为两点：其一，表征野外开放环境下的入射沙通量特征；其二，为低成本风沙计算模拟提供合理的参数校准依据。风洞实验装置设置了一段长5米的均匀沙源供给段作为实验沙源，采用粒子跟踪测速技术（Particle Tracking Velocimetry, PTV）对风沙跃移层的沙通量进行特征表征。实验通过将风速设置为临界起沙风速的1.3、1.5、2倍，沿沙源供给段剖面评估风沙输运过程。完整的风洞实验装置搭建方案与数据分析流程，请参阅文献：Raffaele L.、Coste N.与Glabeke G.发表于《结构工程期刊》（Journal of Structural Engineering）2022年第148卷第7期的论文《风沙防治措施的全生命周期性能与成本分析：迈向混合实验-计算研究路径》，文章编号04022082。本研究隶属于MSCA-IF-2019框架下的“风沙防治措施混合性能评估”（Hybrid Performance Assessment of Sand Mitigation Measures, HyPer SMM）项目，项目官方网址为https://hypersmm.vki.ac.be/。本项目获得欧盟“地平线2020”（Horizon 2020）研究与创新计划资助，资助编号为玛丽·居里科研协议第885985号。