Bulletin of the American Physical Society
72nd Annual Meeting of the APS Division of Fluid Dynamics
Volume 64, Number 13
Saturday–Tuesday, November 23–26, 2019; Seattle, Washington
Session H30: Minisymposium: Fluid Mechanics and Art |
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Chair: Roberto Zenit, Brown University Room: 612 |
Monday, November 25, 2019 8:00AM - 8:26AM |
H30.00001: The Morphology of Parched Tears Invited Speaker: Alvaro Marin In 2015, Maurice Mikkers started the project called “Imaginarium of Tears”, an ongoing micro-photography collection in which Maurice takes tear samples from volunteers and makes beautiful micrographs of the dried tear. The collection is not only aesthetically beautiful, but each micrograph tells a personal story since each pattern left by the dried tear is different from each other. But not entirely, we recently discovered that all the patterns left by the remainder of the teardrop have something in common: a thick rim at the border of the tear which resembles coffee stains. This led to the discovery of a new kind of ring-shaped stains caused by different mechanisms as the classical coffee stain effect. The patterns shown in the Imaginarium of Tears are not only of artistic value, but also scientific. Our current work focus on identifying common patterns and correlate them to different types of tears (basal, emotional, reflex) or to individual donors. Using pattern recognition algorithms we analyze the fractal dimension, lacunarity and structure functions -among other variables- of the patterns to characterize them and correlate them between each other. The aim is not only purely scientific, but it would add a new layer of interest to each of the stories that every tear tells. [Preview Abstract] |
Monday, November 25, 2019 8:26AM - 8:52AM |
H30.00002: What Good are Aesthetics? Invited Speaker: Jean Hertzberg Definitions of art and aesthetics are topics for philosophers, but here we will define art as the instantiation of a vision, and aesthetics as a yardstick for art. In that sense, we identify four aesthetics of flow visualizations (FV): beauty, destruction, power and oddness. For example, beauty is used in the work of a number of professional artists. Destruction is exemplified by our fascination with disasters: wildfires, tornadoes and avalanches. Power is observed in controlled displays such as rocket engines and hydropower plants. Oddness abounds in non-Newtonian fluids and Marangoni flows. These aesthetics can be powerful tools for education and outreach. They form a framework that inspires creativity, triggers intrinsic motivation, and can lead to transformative experiences, where students leave a course with expanded perceptions of fluids, seeing them and loving them in their daily experiences. There are a range of techniques for incorporating FV aesthetics in formal classes ranging from asking students to submit examples found online to an entire course devoted to FV, although the lighter exposures are less effective. FV aesthetics can also be used in informal contexts such as science camps and social media, but results are difficult to measure. [Preview Abstract] |
Monday, November 25, 2019 8:52AM - 9:18AM |
H30.00003: From Depicting to Deploying Fluids in Art. Invited Speaker: Andrzej Herczynski Water appears in ancient Greek and Roman art, on vases, in frescoes, and in mosaics of swimming fish or boats moving across the sea by oar or sail. Beginning in the Middle Ages, images of water in motion, waves, waterfalls, and wine or milk pouring from vessels, appear in landscapes and domestic scenes. Italian and Flemish Renaissance masters endeavored to render nature with the utmost attention to detail and were able, when their subject called for it, to capture fluid dynamics with astonishing precision. Including fluid effects has also allowed artists to convey motion in the static medium of painting or sculpture. Nevertheless, convincing representation of liquid flows, especially oscillatory or turbulent, has remained a challenge. The invention of non-figurative art proved liberating, leading Abstract Expressionist painters to adopt fluid phenomena themselves -- jets, drips, sprays, and instabilities of liquid pigment -- in the creative process. This talk offers a brief review of the quest to naturalistically \underline {depict} fluids, and the alternative tactic of modern artists who learned to \underline {deploy} fluids, endowing their abstractions with nature's own patterns. [Preview Abstract] |
Monday, November 25, 2019 9:18AM - 9:44AM |
H30.00004: Pattern formation in watercolor paintings Invited Speaker: Jorge Gonzalez-Gutierrez The restoration of a masterpiece is essential to preserve its historical and commercial value. With the aim to find physical laws that allow us to predict the complex phenomena that emerge during the materialization of artistic work, we explore the effect of the pigment concentration and paper humidity on the pattern formation derived from evaporation of droplets of watercolor paintings. These control parameters induce the formation of color gradients, stratifications, flat regions, borders, dendritic shapes, and radial tips. Interestingly, the droplet evaporation on dry paper form coffee rings stains regardless of the nature of the pigment. The mean pixel intensity of such stains follows an exponential function that saturates at high concentration, while the thickness of the coffee ring increase for watercolor inks containing colloidal particles and does not change for non-colloidal. The experiments reveal that water distribution on the paper surface, and not on the density of water on the paper, determine the structural characteristics of watercolor stains. We show evidence that the cornerstone in the creation of complex patterns in watercolor paintings is driven by the coffee ring effect and imbibition processes. Our findings could help with the correct application of restoration processes to preserve the heritage value of watercolor artwork. [Preview Abstract] |
Monday, November 25, 2019 9:44AM - 10:10AM |
H30.00005: The Art and Craft of Science Invited Speaker: Daniel Harris In this talk, I will discuss the interplay of art, craft, and science from both a historical perspective as well as through my personal experiences. While such endeavors are frequently viewed as disparate, success requires use of a number of common technical skills, thought processes, and technologies. Incorporating elements of art and craft into scientific education and research opportunities opens new pathways for discovery and has potential to enhance inclusivity and diversity in science. In particular, craft, via its modern embodiment in the global rise of makerspaces, has tremendous capacity to facilitate student involvement in meaningful contributions to research and design at very early stages in their careers. Furthermore, art and craft can provide effective media for outreach and public engagement in science. Examples of the integration of art and craft into my own educational and research initiatives will be discussed throughout. [Preview Abstract] |
Monday, November 25, 2019 10:10AM - 10:36AM |
H30.00006: Unraveling the motion of a fluid from dry paint Invited Speaker: Tadd Truscott Herein, we attempt to unravel two phenomena common to some modern canvas artists. In some paintings, small droplets (0.1 – 5 mm in diameter) appear as a single color, however, on closer inspection are actually composed of multicolored spiral patterns (e.g., in non-Newtonian acrylic paint). High-speed imaging reveals that these assemblies occur when a droplet impinges on the edge of a small pool of paint. The splash crown forms color on two sides and the edges are rolled up to eventually form paint spirals, resulting in varying colored droplets from a distance. This intriguing painting technique could inspire new mixing techniques for small scale ultra-viscous fluids. Other artists use slower pouring techniques with color after color poured onto three-dimensional shapes. The paint forms expanded rings of color, lines of increasing radius, and cascades of color as the paint is sped up passing over slopes and valleys. These beautiful formations are formed by equally beautiful physical phenomena that preserve the motion of the fluid even after the paint is dry.\\ \\In collaboration with: Baptiste Darbois Texier, Univ de Sangiago de Chile;, Zhao Pan, Univ of Waterloo, Stephane Dorbolo, Univ of Liege, Grasp Lab; Rafsan Rabbi, Mujtaba Mansoor, Andrew Merritt, Saberul Sharker, Sarah Dayley, Jeffrey Fonnesback,Utah State Univ; Benjamin Lovett, Jesse Belden, Randy Hurd, GLYPH; Randy Ewoldt, Univ of Illinois at Urbana-Champaign; Aren Hellum, KAUST [Preview Abstract] |
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