Scalar and Vector Analysis of the Flow Topology
With the ever-increasing of the complexity of data from simulations and experiments, it becomes pressing to analyze data in a more appropriate way to exact information as much as possible. The variables of primary importance to describe field phenomena can be either in scalar or in vector forms. In recent years, based on the intrinsic flow topology several new data analysis approaches have been developed, such as dissipation element analysis (J. Fluid Mech. 554: 457, 2006) and streamtube segment analysis (J. FluidMech. 648: 183, 2010). Dissipation element analysis defines a new topology structure which partitions the flow fields in a non-arbitrary and space-filling way. For a vector field, streamtube segments are non-overlapping and space filling as well. To analyze both scalar and vector field variables, from the statistics of these decomposed units with relatively simple structures, it is possible to reproduce the properties and understand more details of the fields to be studied. Although originally these approaches are aimed to investigate turbulent flows from the direct numerical simulation (DNS) data, in principle it is straight to apply the similar ideas to general field variables as well.
dissipation element analysis streamtube segment analysis field variables
Wang Lipo
UM-SJTU Joint Institute, Shanghai JiaoTong University, Shanghai 200240, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
228-231
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）