Image of the smoke coming off of a piece of paper after burning. I love the look of the ribbons it created and the layers and colors within it.
For this image, I chose Robert Gray’s team second. I feel that this is one of the most interesting and mysterious photos taken this year, and all it took was a simple color inversion. The colors look exactly like a beautiful flame, but when you read the report you find that this was all thanks to the editing, and there is a unique fluid dynamic phenomenon that gives the texture of the flame. Overall, I really like this photo and recommend that you read the report for the full effect.
Link to original post: http://www.flowvis.org/2018/03/15/robert-gray-team-second/
This image depicts colored isopropyl alcohol on a sheet of acrylic. This image interests me because the isopropyl alcohol branches outward resembling trees in a forest.
Image credit: J. Nahabetian
“Fuckyeahfluiddynamics.” FYFD, 8 May 2018, fyfluiddynamics.com/post/173704478618/dyed-isopropyl-alcohol-atop-a-thin-layer-of.
The picture used in this assignment utilizes a laser sheet in a dark room and smoke being blown into it. When the smoke crosses the sheet of laser, a 2D-like projection of the flow can be visualized. For the final image, edits were used to create an image that looked like it could’ve been painted with a neon aesthetic. The sharp contrast of neon green on black gives a spooky neon feeling. The room used made for a difficult capture of this fluid flow due to the natural currents of the room. The smoke would only be visible for a brief moment before being swept away. This method of flow visualization is a fun way to observe turbulence and what a cross section of that turbulence projection would look like.
The video used for this assignment depicts the phenomena of surface tension and viscosity. Using ferrofluid and two glass planes, interesting patterns were able to be created. Although the ferrofluid was not particularly necessary for the experiment, since no magnets were used, its dark color helped create a strong a strong contrast to easily visualize what was happening. This visually appealing effect was created by placing a glass plane down, pouring a small amount of ferrofluid on it, then placing a second glass plane down on top of that. Separating the glass planes from one side, creating an uneven gap, resulted in a repeatable and appealing pattern. The pattern created was for the most part repeatable as long as the glass was removed in the same way. For example, you can lift the top glass plane straight up, starting from one side, from a corner, etc.
The video used for this assignment depicts the phenomena of reigniting a candle via its smoke when blown out. This can happen when a lit candle in blown out, then a lighter is quickly brought to the smoke coming from the wick. The reason this can happen is because when the candle is lit, the flame/wick is burning up wax to produce the flame. When it is blown out, unburned wax is carried into the air with the smoke. This wax can be ignited and travel down the stream of smoke to reignite the wick itself. When making this video, just a candle and a long lighter was needed.
This was the image used for the clouds first assignment. I determined it to be a stratocumulus cloud based on its shape and low altitude. Although stratocumulus can be much larger, I still believe these to be the type. The image used for this report was taken off highway 36. I chose to use this photo because of the contrast that it created because of the nice weather of the day. This was taken on March 5th at 2:55 pm. I found this photo to be a great example for this assignment of capturing a cloud, identifying it, and discussing the stability of the atmosphere that created this cloud formation. To capture this, I used my iPhone 7 and edited it with fotor. I used a black and white theme because I felt that it gave the clouds a strong contrast which made them easily identifiable. The black and white also helps to keep the clouds as the center of attention rather than the ground. Because I was using an iPhone, I had to take numerous pictures before one had decent enough quality. The autofocus feature on iPhones can make it difficult to capture subjects such as clouds.
The mountains seen in the background of the picture are much farther than they appear and likely have no effect on the clouds or the atmosphere around. Consulting a Skew-T diagram, the atmosphere is confirmed to be stable. Assuming the average length of the clouds in the picture are about 100 m , the density 1 Kg/m^3, the wind an average velocity of 4 m/s and the viscosity to be 1.7 * 10^-5 Ns/m^2, the Reynolds number of cloud is approximated to be Re=2.35 * 10^7 resulting in turbulent flow.
There’s just something about the texture of molten lava
Video by Bryan Lowry for lavapics.com
I wanted to pick one of our own for round 2, so I went with Gabriel Elbert’s Team First image, “Lava”. There were many contenders.
This picture really stuck out to me, and I think it’s because the black is…so black next to this insanely complex sea of movement and phenomena, with more boundary areas than a ski resort. I love the contrast between dark/light, fast/slow, ordered/chaotic. Overall just really strong imagery paired with a crazy flow.