Recently, Dr. Adam Fortails' article "Weathering the storms at the Qingtu Lake" was published on the homepage of the Journal of Fluid Mechanics (JFM), an international prestigious journal based at the University of Cambridge Observation Array ", introduces the function of a field observation array for sandstorms in Qingtuhu Lake set up by Prof. Zheng Xiaojing, Director of the Particle-Turbulence Research Center of Lanzhou University, and its importance for the study of wind-sand two-phase flow and complex dynamics of sandstorms, as well as the relevant results.
This paper first introduces the significant impact of the strong sandstorms in Dunhuang and Beijing, China in 2021 on people's lives and property, and the scientific research based on the Qingtu Lake Observation Array can play an important role in mitigating such disasters. Emphasizing that the sandstorm field observation array, built on the dry Qingtuo Lake, is "a unique location" in the world "for the study of large-scale turbulence, the flow of particulate matter and the dynamics of the atmospheric surface layer", "It is a high-tech science station", which can realize the three-dimensional measurement of multiple physical quantities such as wind speed and electric field. The paper emphasizes the complexity and uncertainty of sandstorm research and the influence of wind-sand-surface-electric field interaction on the dynamics of sandstorm, and argues that "the unique feature of Qingtuhu observation array is that it can simultaneously measure the particle flow and the electric field generated by suspended particles during sandstorms". The paper also describes that Zheng Xiaojing's team has accumulated more than 7,400 hours of synchronized observations of multiple physical quantities. On this basis, the basic research results on how suspended particles affect the turbulent structure during sandstorms, the reconstruction of three-dimensional electric field, and the tracking of air and particle flow to understand the correlation mechanism and interaction of multiple factors may provide prospects for more basic understanding.
By https://www.cambridge.org/core/journals/journal-of-fluid-mechanics's original Fluid mechanics blog section or by Cambridge core Blog https://www.cambridge.org/core/blog/tag/fluid-mechanics/.
This is the first time for the website to actively introduce the work in the field of fluid mechanics in mainland China. It is also the first time that Academician Zheng Xiaojing was invited to give a one-hour conference report at the fluid Mechanics Conference held in Cambridge University in 2021 to commemorate the 100th anniversary of the birth of the founding editor of JFM and the famous fluid mechanics scientist G.K. Batchelor (one of the 6 conference reports, Is the only one in China) and has been selected by Cambridge University as one of the 150 internationally influential fluid mechanics scholars in the world in the past hundred years (there are only two in the Chinese mainland, and the other one is the famous fluid mechanics scientist Zhou Peiyuan in China). After that, he reaffirmed the research work of Lanzhou University on particle-turbulence interaction.