Dynamic Semi-Structured Meshes for Fast Numerical Simulation of Multi-phase Modelling in the Energy Industry

我的项目是快速有效地建立Navier-Stokes方程（N-S）的模型。为此，将开发一种半结构化网格方法，它将继承结构化网格和非结构化网格的优点。在这个项目中，半结构化网格是从完全非结构化网格开始创建的，这些网格足够粗糙，可以捕捉到领域的复杂性。然后，根据所需的分辨率，将每个非结构化元素拆分几次，以在每个非结构化元素中创建一个嵌套的结构化网格。通过这种方式，代码可以执行大多数基于结构化元素的计算，这使得计算可能与基于结构化的代码一样快，但具有非结构化网格方案的灵活性。粗略地说，这个项目有可能将模拟时间减少三分之一。这种减少在能源工业中很重要，并且有各种各样的应用，例如建模射流，混合罐，段塞流，管道流动等。

My project is to model the Navier-Stokes equations (N-S) fast and efficient. To do so, a semi-structured meshes approach will be developed that will inherit the advantages of both structured and unstructured grids. In this project, the semi-structured mesh is created by starting with fully unstructured grids which are coarse enough to capture the complexity of the domain. Then, each unstructured element is split a few times, depending on the required resolution, to create a nested structured mesh inside each unstructured element. In this way, the code can perform the majority of the calculations based on structured elements which make the computation potentially as fast as structured based codes but with the flexibility of unstructured grids schemes. Roughly, this project has the potential of reducing simulation times by a third. This reduction is important in the energy industry and has a wide variety of applications e.g. modelling jet flows, mixing tanks, slug flows, flow in pipes etc.