Sparse Representation and Visualization for Direct Numerical Simulation of Premixed Combustion
Sparse Representation and Visualization for Direct Numerical Simulation of Premixed Combustion
复制标题
DOI：
10.1111/cgf.12388
复制
发表时间：
2014-06
影响因子：
2.5
通讯作者：
Timo Oster;D. Lehmann;G. Fru;H. Theisel;D. Thévenin
中科院分区：
文献类型：
--
作者：
Timo Oster;D. Lehmann;G. Fru;H. Theisel;D. Thévenin
预混合燃烧的直接数值模拟产生了tb级的原始数据，这些数据非常大，无法存储，并且必须进行分析和可视化。需要对数据存储、数据分析和数据可视化同时进行综合处理。为此，我们引入了专为DNS数据定制的稀疏表示，可直接用于分析和可视化。这种方法是基于这样一种观察，即大多数信息位于化学反应发生的窄带区域，但这些区域并没有很好地定义。仿真中涉及的标量场的特征表面的可视化研究方法是一种可能的应用。我们在多个真实数据集上演示了我们的方法。
Direct Numerical Simulations of premixed combustion produce terabytes of raw data, which are prohibitively large to be stored, and have to be analyzed and visualized. A simultaneous and integrated treatment of data storage, data analysis and data visualization is required. For this, we introduce a sparse representation tailored to DNS data which can directly be used for both analysis and visualization. The method is based on the observation that most information is located in narrow‐band regions where the chemical reactions take place, but these regions are not well defined. An approach for the visual investigation of feature surfaces of the scalar fields involved in the simulation is shown as a possible application. We demonstrate our approach on multiple real datasets.