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highlights:2025:dustvis [2025/08/28 10:54] – created James Kresshighlights:2025:dustvis [2025/08/28 14:14] (current) – James Kress
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 <WRAP center round box 100%> {{:favicon.ico?nolink&0x30}} <fs:26px>** KVL Staff on Project**</fs> <WRAP center round box 100%> {{:favicon.ico?nolink&0x30}} <fs:26px>** KVL Staff on Project**</fs>
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 ===== Overview ===== ===== Overview =====
-A team of KAUST researchers led by postdoc Dr. Fernan Martinez and Prof. Cristian Picioreanu recently published a paper that provides new insights in the field of composite membranes research. In the article, Dr. Martinez developed a 3D solution friction model considering that the ions (Na+ and Cl-) move by a difference in concentration, pressure and electrical potential in the active layer. The results indicated that 2D active layer representation tends to overestimate salt flux. Furthermore, they evaluated the effect of the support layer on the salt permeability, and it was found that the support layer can reduce permeability by a longer transport path in the active layer. Finally, they highlighted that the effective active layer thickness (∼40 nm) was a third of the nominal thickness (∼120 nm), indicating that the values reported in the literature are overestimated.  +KVL in collaboration with Prof. Ibrahim Hoteit's group visualized a simulation of an extreme dust event that happened in Saudi Arabia in July of 2018. With the goal of understanding the formation, progression, and driving factors behind the storm.
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-The paper's graphical abstract shown above illustrates the approach used in this work. The paper entitled "Impact of active layer morphology on salt permeability in RO composite membranes: 3D modelling from TEM geometry and effective membrane thickness" can be accessed [[https://www.sciencedirect.com/science/article/pii/S1383586625027728|here]]. Please note that all figures used in this article are directly from the original published paper.+
  
-KVL's visualization scientist Dr. Ronell Sicat supported Dr. Martinez in pre-processing the TEM scans, testing segmentation methods, and eventually post-processing the segmentation and extracted surfaces in order to get 3D geometries that were suitable for the target simulation software. KVL also provided free access to Avizo software for data visualization, segmentation, and analysis and a powerful workstation with a pen-and-tablet interface that enabled faster manual segmentation of the TEM data. KVL's contribution is acknowledged in the paper.+Dust is one of the main components of atmospheric particles in desert regions. The concentration, composition, and spatial 
 +distribution of these dust particles in the atmosphere vary over time and could significantly impact the weather, climatological 
 +conditions, radiative forcing and transfer, and ecosystem dynamics. Scientists and decision-makers are interested in analyzing 
 +the evolution of dust events (including their formation, dynamics, and interactions with the environment), understanding the 
 +main contributing factors and atmospheric conditions that intensify these events and lead to extreme dust events, examining 
 +the role of topographic features, and gaining insights into their relationship with global teleconnections 
 + 
 +With this work we developed a system to analyze the output from the WRF simulation, Weather Research and Forecasting, simulation run at a fine temporal resolution on Shaheen II. This resulted in a large amount of data that necessitated the design of the visualization environment to quickly process and visualize the simulation results. This system also aids in understanding the interactions between different 
 +atmospheric parameters, the impact of terrain surface characteristics, and more, providing a holistic view of the dust events. The paper entitled "Evolution of Extreme Dust Events in 3D Environment" can be accessed [[https://diglib.eg.org/items/d7d0b300-615a-4767-9c1d-fe14cd734147|here]]. 
 + 
 + 
 +{{ wiki:highlights:2025:final.mp4?512 |Saudi Dust Event WRF Simulation}}
  
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