Examples of what you can produce with EnSight

Dinosaur-killing Asteroid

What does the U.S. Government do with its massive supercomputers?  One use is to plan visionary ways of protecting the planet from extraterrestrial threats.  No not UFOs, meteors.  To realistically consider such mind-bogglingly ambitious concepts, the scientists and engineers turn to computer simulations backed by years of careful comparisons with tests.  They perform these simulations using technology known as Computational Fluid Dynamics (CFD) on massive supercomputers a technology field known as High Performance Computing (HPC).  Then visualization tools such as EnSight perform post-processing after the simulation is complete to reduce the data to manageable size and visualize the data and animate it so that complex data becomes understandable to the engineers and scientists.  We call this HPC CFD Post-processing, and its EnSight’s forte.

HPC CFD post-processing by EnSight to visualize asteroid destruction simulation.

 

 

Los Alamos Movie made with EnSight of Dinosaur Killing Asteroid

 

BVR-Ensight-graphic_with_logos

Gasifier Analysis using CPFD Barracuda

Barracuda Virtual Reactor VR – CFD post-processing of gas-particle fluidized reactors simulation from EnSight by CEI Software on Vimeo.

Animation of gasifier simulation. Physics from CPFD Barracuda is based off from discrete particle continuum. Here, the volume fraction of the particles within the gasifier stage are shown. Analysis and post processing done with EnSight.

New Volume Rendering Video of Flow Past a Moving Valve

Convergent Science shared with us this excellent model of a valve showing transient flow properties as the valve opens.  We visualized the data in EnSight using our Volume Rendering feature.   As you can see Volume rendering gives you a holistic view of the data in a qualitative though not quantitative way.

 

Volume Rendering of flow past a moving valve from EnSight by CEI Software on Vimeo.

 

 

A longer movie was also made of the same scene with additional EnSight features like clip planes, plotted data that provide more quantitative details about the flow.

 

Example Moving Valve by Converge from EnSight by CEI Software on Vimeo.

 

 

More Information on Volume Rendering.

 

If you want to learn how to use Volume Rendering.  Watch this tutorial.

 

CFD post processing for Flow-3D

Flow-3D Tutorials

How to post process Flow-3D data using EnSight is covered in a few short which can be found here. More tutorials here.

Flow-3D Example

A very nice movie was made by Aric Meyer over at CEI China (http://ensight.com.cn) of Flow-3D data of a ship plowing through the sea.  This is indeed a CFD post processing animation, created by EnSight, not created by some Hollywood special effects software.  The model was created by XC Engineering of Italy, again using Flow-3D from Flow Science.

Aric Meyer over at CEI China told us how he accomplished this cool effect.

“I was working on some demos for a ship prospect using the data from Flow3D and XC Engineering. At one point I happened to make the scene look like “bioluminescent dinoflagillates” which glow when they are disturbed. If you’ve seen the movie “Life of Pi” there was a scene with the same or similar phenomenon in the scene when the whale jumps out of the water. Maybe not useful for most engineering, but it looks cool. The effect is made by using a texture set to ‘modulate’ and the water surface is colored by turbulent KE, which is white for high values and black/grey for low values.”

 

Related Flow-3D CFD Post Processing News

Flow Science has selected EnSight as their technology partner for future CFD post processing developments, after comparing all the CFD post-processing products in the market.

You can also use textures in EnLiten files.  Sample EnLiten file using textures found here.

Wind Energy and Wind Farm CFD simulation show that Converge is not only for Internal Combustion Engines (ICE)

Wind farm data from CSI, makers of Converge visualized using EnSight.

Wind Turbine Site Model, Clip through model, Streamlines. from EnSight by CEI Software on Vimeo.

 

We used texture maps to make the terrain look like rolling grasslands, clip planes to show the velocity in a fixed altitude plane, and if you look carefully you can see the mesh adapting to moving blades as well as to greater or lower variable gradients.  There’s a 2nd viewport showing the pathlines of the flow.

We liked that, but thought we’d go a little deeper and use a more advanced technique.  What if we changed the clip transparency to be nearly invisible for low speed flow and more opaque when things go interesting. This particular animation, the clip plane’s opacity is changed dynamically through the velocity variable so that regions of high velocity are opaque, and regions of low velocity are translucent. The alternative view shows streamlines seeded from the turbine blade.

Wind Turbine Site Model, Clip through model, Streamlines. from EnSight by CEI Software on Vimeo.

 

In this particular visualization, the clip plane in the main view is colored with velocity and the the engineer can inspect the changing grid resolution in response to the flowfield gradients. In the alternative view, inspection of turbulent kinetic engery isosurfaces can help yield information regarding the influence of the various large obstacles in the field (hills, towers, etc) which are generating additional turbulence.

Wind Turbine Site Model, Clip through model, Streamlines, Isosurfaces from EnSight by CEI Software on Vimeo.

EnSight is useful for looking at this kind of data. We could have gone further and done a keyframe animation fly-through as well, but that would have probably looked like showing off.  (keyframe animated Converge model available here).

Converge data is almost perfect for EnSight, its CFD, its transient, and Converge’s moving parts and adapting mesh and growing model sizes are no problem for EnSight.  EnSight 10.1 introduced native polyhedral element support.  

Want to see more models solved with Converge and post-processed using EnSight, visit the Converge page in our video gallery.

P.S – if you make CFD data, for example you have a CFD solver that outputs data in a form EnSight can read and want to send an interesting dataset like CSI did, we’d like that.