The flowfield analysis around a model of space plane traveling at Mach 10 has been carried out utilizing an Electrical Discharge Method and a Finite Element Method (FEM) scheme. The Electrical Discharge Method can be visualized almost all important hypersonic flowfield phenomena, such as three-dimensional shock shapes, streamlines near wall surface, distant streamlines from wall surface, and boundary layers etc. In this study, the experiments and the numerical simulations were carried out under the conditions the angle of attack were 0 and 10 deg. Furthermore, the experimental results were compared with the numerical ones. In these comparisons, it was found that they were relatively in good agreement.

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The three dimensional visualization is an important method to understand the flow structure. In this study, the program that can pursue a motion of arbitrary two or more passive particles is constructed for the Taylor-Couette flow with small aspect ratio. It can visualize a flow field in three dimensions. The inner cylinder is rotating whereas the outer cylinder and the end walls of cylinders are stationary. The velocity data that is in the quasi-steady state after fully developed flows are used. Using the staggered grid, the algorithm of interpolation method in three dimensions is developed and it can succeeded to pursue a passive particle. A user can change a starting position of a particle, time interval, velocity data, iteration number and the ratio of the circumferential velocity component. After drawing path lines, the user can change a point of view with mouse operation.

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