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Laser motor: Multiple lasers are used to rotationally drive a carbon nanotube that has charged atoms which yield a net dipole moment.
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PARALLEL COMPUTATION
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Computational Chemistry
Diamonoid sleeve: An outer sleeve for a molecular bearing based upon diamond is shown in this conceptual design. The stability of this design was examined using molecular dynamics simulations.
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C-SAFE integrated fire/container simulation visualization. 170 time steps each with 80x80x300 cells and 1.1 million particles. Simulated for ~3 days using 600 processors. The particle/volume visualization is done in the Real Time Ray Tracer on an SGI Orgin 3800 using 40 processors.
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Electron orbits on a polymer droplet: These computations are paving the way for development of new materials for possible use in flat panel displays and new storage media. Stay tuned for new developments!
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Granular Compaction
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Cardiac electric potentials visualized with the SCIRun problem solving environment
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Parallel Visualization
Seismic Data Visualization These images were generated by the real time ray tracer leveraging user interface capabilities of SCIRun. Using parallel processing we are able to generate these images at between 2 and 20 frames per second on 24 processors in cluster. Each node in the cluster is normally restricted to the memory that is installed within it.
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Parallel Visualization Fire Spread
Visualization of the temperature and velocity magnitude fields from a heptane pool fire simulation as they evolve through time. Each time-step consumes 512 MB of texture memory and was rendered in parallel at 0-8 frames per second on an 8-pipe Onyx4 system. This large dataset was interactively rendered using Rhesus, a texturebased parallel volume rendering application. Rhesus runs on shared memory platforms like the SGI Onyx4 and on commodity clusters. The application also supports ATIand NVidia-based graphics hardware.
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Polymer droplet formation: molecular dynamics simulation of the formation of a polymer nanodroplet. Sub-micron polymer particles exhibit unique properties, which make them extemely useful for applications as diverse as optical displays and industrial coatings. The nano-droplet is formed in a solvent and forced through a micron-sized orifice.
Fire Spread Simulation
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The figure shows the volume rendered temperature data from the transient simulation of the 10-m heptane pool fire (red hottest, yellow cooler, black coolest). This simulation is performed on a 300×300×300 uniform computational mesh. The roll-up of vorticies observed in real large-scale fires is captured by the simulations.
High End Computing and Its 应用 （第八单元 应用案例与总结)
郑
耀
宋广华
张继发
浙江大学工程与科学计算研究中心 浙江大学计算机科学与技术学院
研究生2007-2008学年秋学期 (2007.9.11--2007.11.6)
高端计算及其应用（课时安排) 1. 2. 3. 4. 5. 6. 7. 8. 导论 支撑技术举偶 高端计算机的结构与系统（1） 高端计算机的结构与系统（2） 软件技术 关键技术与算法 并行应用的实现 应用案例与总结
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应用案例
Mesh Generation Partition Parallel Computation PSE Parallel Visualization
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Mesh Generation
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Partition
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Partitioning的其它功能
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Delta Wing
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The picture shows high-resolution stream surfaces used to visualize both primary vortices and associated breakdown bubbles presented in a CFD simulation of a subsonic delta wing at high angle of attack. X. Tricoche, C. Garth, T. Bobach, G. Scheuermann, M. Ruetten. “Accurate and Efficient Visualization of Flow Structures in a Delta Wing Simulation.,” In Proceedings of 34th AIAA Fluid Dynamics Conference and Exhibit, Portland, OR., June, 2004.
Train
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The picture shows the multiple vortices created on the side of a high-speed train visualized by stream surfaces. C. Garth, X. Tricoche, T. Salzbrunn, T. Bobach, G. Scheuermann. “Surface Techniques for Vortex Visualization,” In Proceedings of Joint Eurographics - IEEE TCVG Symposium on Visualization, pp. May, 2004. .
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平台软件环境的总结
以高端数字样机为例 CAD的读入 CAD模型修复 网格生成 网格分块 并行计算 大规模并行（分布式）显示
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高端数字样机及其支撑技术 概念和意义 和CAD系统的无缝集成 几何网格生成 并行和分布式计算 大规模数据可视化 沉浸式设计平台
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概述
数字样机（Digital Prototyping，Virtual Prototyping）是使用计 算机模型来代替真实物理样机的技术，是20世纪80年代随着计算机 技术的发展而迅速发展起来的一项计算机辅助工程技术。 用途： 数字样机是产品全方位的数字化模拟，用于验证设计思想、辅助 产品选择、计算产品的各种性能（电磁、动力、结构、热传导等 ），测试产品的可制造性，以及提前展示产品。 数字样机是CAD，CAE和CAM等技术的综合。 意义： 数字样机能显著缩短产品设计和制造周期，降低开发成本，提高 产品质量。在产品开发中用数字原型样机代替物理原型可显著地 节减开支。