Many assumptions are required to perform these computations, and a significant investment of time. My goal is to quantify turbulence in the ocean, interactions of turbulence with the interface, and the mass balance between the atmosphere and the ocean, by applying a computational technique. Measuring small turbulent flow structures near the interface is difficult in laboratory and field experiments. Gaseous material and heat are exchanged between the ocean and the atmosphere, and these exchange rates are determined mainly by turbulence in the ocean below the interface. What Challenges Do You Face When Conducting Your Research?Ī. In the near future I hope to compute the interactions of turbulent flows in air and water accompanied by the gas exchange, to understand more physically complex phenomena. In this case, spread of the gas in air is not so quick at the wave crests, and we should consider this in our computations. On the other hand, I deeply understand the importance of the spread of the material in air on some occasions, for example, on a case that turbulent flows in air induce waves at the water surfaces, and consequently, turbulence in water. This assumption is also helpful to reduce computational efforts by skipping computations of the concentrations in air. Using this assumption, my attention is concentrated on computing the concentration profiles of the material only in water. Therefore, I assume that the concentration of the materials in air is uniform in space, because of its quick spread in air. This means that the gas transport in water is much slower than that in air. In general, gaseous materials are more easily spread in air than in water. And these concentration profiles have large gradients at the interface. The concentration of the gas in the ocean varies drastically, mainly as a function of the distance from the surface. Let’s consider gas transport from the atmosphere into the ocean, across the ocean surface. Fluid flows in the environment are turbulent, including atmospheric and oceanic flows. Why is turbulence in the atmosphere and ocean significant?Ī. I chose a computational technique as my research tool, rather than experimental fluid mechanics. I have been influenced strongly by his method of research for 20-plus years. My supervisor was a specialist in turbulence research and laboratory experiments. I entered the department of chemical engineering and chose to join the fluid mechanics lab when I was an undergraduate. How did you come to choose turbulence as your area of study?Ī. And I decided to become an engineer because I believe that in our world, inspiration-based thinking will help us. When I was a high school student and a university undergraduate, I loved math. How did you become interested in engineering?Ī.
![jhu tecplot 360 download jhu tecplot 360 download](https://wseit.engineering.jhu.edu/wp-content/uploads/2020/10/graphical-user-interface-text-application-email-1.jpeg)
We recently interviewed Nagaosa about his research and his use of Tecplot 360 software. In his view, this is the role of the engineer. It is Nagaosa’s belief that “inspirational-based thinking” will help us understand turbulence dynamics.
#Jhu tecplot 360 download software
He uses the software as a communication tool for risk assessment of hazardous materials leakages in a closed space, and also to show the spread of the hazardous gases in our residential space. For more than 15 years he has used Tecplot 360 software, a numerical simulation and computational fluid dynamics (CFD) visualization tool that creates state-of-the-art visual reproductions to quickly make sense of vast amounts of complex information. He also was a visiting scientist at the Nansen Environmental and Remote Sensing Center, a nonprofit climate and environmental research foundation affiliated with the University of Bergen, Norway.Įarly in his career, Nagaosa chose computational techniques as his preferred method for evaluating environmental fluid mechanics. Nagaosa also serves as a senior research scientist at the Research Center for Compact Chemical System, AIST (National Institute of Advanced Industrial Science and Technology) in Tsukuba, Ibaraki, Japan. Published in Physics of Fluids, 18,055106 (2006),by Lars Inge Enstad, Ruichi Nagaosa and Guttorm Alendal. When I was invited to be a guest scientist at the Nansen Environmental and Remote Sensing Center, we enjoyed several observations of the structures of turbulent vortices based on our numerical experiments. Lars Inge Enstad, at the University of Bergen.
![jhu tecplot 360 download jhu tecplot 360 download](https://i.ytimg.com/vi/nJQzOJ4AYkg/maxresdefault.jpg)
These snapshots were produced in very close collaboration with my Norwegian colleagues, Prof. Producing beautiful snapshots of turbulent vortices is one of my hidden hobbies as an amateur artist.