MEETING-DATE:February 2, 2017
MEETING-LOCATION:DC 1331
MEETING-TIME:10:30
MEETING-CHAIR:Omar Zarifi
MEETING-CHAIRPIC:omar.jpg
COFFEE-HOUR-LAST-WEEK:Yipeng
COFFEE-HOUR-THIS-WEEK:Volunteers?
COFFEE-HOUR-NEXT-WEEK:Volunteers?
FORTH-DATE1:February 9, 2017
FORTH-DATE2:February 16, 2017
FORTH-DATE3:February 23, 2017
FORTH-DATE4:March 2, 2017
FORTH-LOCATION1:DC 1331 10:30
FORTH-LOCATION2:DC 1331 10:30
FORTH-LOCATION3:DC 1331 10:30
FORTH-LOCATION4:DC 1331 10:30
FORTH-CHAIR1:Christopher Batty
FORTH-CHAIR2:JC Chang
FORTH-CHAIR3:Bill Cowan
FORTH-CHAIR4:Sean Davis
FORTH-CHAIRPIC1:batty.jpg
FORTH-CHAIRPIC2:chairred.jpg
FORTH-CHAIRPIC3:bill.png
FORTH-CHAIRPIC4:chair.jpg
FORTH-TP1:Omar Zarifi
FORTH-TP2:Christopher Batty
FORTH-TP3:JC Chang
FORTH-TP4:Bill Cowan
FORTH-TPPIC1:omar.jpg
FORTH-TPPIC2:batty.jpg
FORTH-TPPIC3:chairred.jpg
FORTH-TPPIC4:bill.png
TPNAME:Yipeng Wang
TPTITLE:Narrow Band FLIP for Liquid Simulations
TPABSTRACT:The Fluid Implicit Particle method (FLIP) for liquid simulations uses particles to reduce numerical dissipation and provide important visual cues for events like complex splashes and small-scale features near the liquid surface. Unfortunately, FLIP simulations can be computationally expensive, because they require a dense sampling of particles to fill the entire liquid volume. Furthermore, the vast majority of these FLIP particles contribute nothing to the fluid's visual appearance, especially for larger volumes of liquid. We present a method that only uses FLIP particles within a narrow band of the liquid surface, while efficiently representing the remaining inner volume on a regular grid. We show that a naive realization of this idea introduces unstable and uncontrollable energy fluctuations, and we propose a novel coupling scheme between FLIP particles and regular grid which overcomes this problem. Our method drastically reduces the particle count and simulation times while yielding results that are nearly indistinguishable from regular FLIP simulations. Our approach is easy to integrate into any existing FLIP implementation.
TPPIC:yipeng.jpg
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SEMINARS:<dl><dt>Thursday, 2 February 2017, 3:00PM - Computer Science (Cryptography, Security, and Privacy (CrySP) Group), DC 1304</dt><dd>Sarah Jamie Lewis: -- OnionScan: Practical Deanonymization of Hidden Services</dd></dl><dl><dt>Friday, 3 February 2017, 10:30AM - Institute for Quantum Computing, QNC 0101</dt><dd>Peter Geltenbort: -- Research with very cold and ultra-cold neutrons at the Institut Laue Langevin in Grenoble</dd></dl><dl><dt>Friday, 3 February 2017, 1:00PM - Computer Science (ISS4E), DC 1331</dt><dd>Sun Sun: -- Intelligent Control of Storage and Flexible Loads in Renewable-Integrated Electrical Grids</dd></dl><dl><dt>Friday, 3 February 2017, 2:00PM - Institute for Quantum Computing, QNC 0101</dt><dd>Justin Bohnet: -- Entanglement in a synthetic quantum magnet made of hundreds of trapped ions</dd></dl><dl><dt>Friday, 3 February 2017, 2:30PM - Computer Science (Cryptography, Security, and Privacy (CrySP) Group), DC 1304</dt><dd>Nikita Borisov: -- The State of Secure Messaging: Ratchets, Keys, and Metadata</dd></dl><dl><dt>Friday, 3 February 2017, 7:30pm - Bridges Lecture Series, SJ2 1004</dt><dd>George Hart and Elisabeth Heathfield: -- Making Math Visible</dd></dl><dl><dt>Monday, 6 February 2017, 10:30AM - Computer Science, DC 1304</dt><dd>Shafiq Joty: -- Structured Predictions for Discourse Analysis and Applications in Natural Language Processing</dd></dl><dl><dt>Thursday, 9 February 2017, 10:30AM - Computer Science, DC 1304</dt><dd>Alexis Hiniker: -- Beyond "User Engagement": Designing for Intentional Technology Use</dd></dl><dl><dt>Thursday, 9 February 2017, 3:30PM - Computer Science, DC 1302</dt><dd>Eric Horvitz: -- Data, Predictions and Decisions in Support of People and Society</dd></dl><dl><dt>Friday, 10 February 2017, 10:30AM - Computer Science, DC 1302</dt><dd>Eric Horvitz: -- The One Hundred Year Study on Artificial Intelligence: An Enduring Study on AI and its Influence on People and Society</dd></dl><dl><dt>Friday, 10 February 2017, 1:00PM - Computer Science (ISS4E), DC 1331</dt><dd>Bissan Ghaddar: -- Semidefinite Optimization for Energy Networks</dd></dl><dl><dt>Friday, 10 February 2017, 2:00PM - Institute for Quantum Computing, QNC 0101</dt><dd>Onur Hosten: -- Quantum entanglement for precision sensing with atoms and light</dd></dl>