Abstract
A pressure estimation system which uses a new model of a Poisson equation has been examined. The primary objective of the system is to let PIV measurement more advantageous for a wake survey in aerodynamic design of aircraft. In the wake plane velocity, pressure and etc. are no longer two dimensional, then common methods for PIV pressure calculation do not work. That is why the new model called two and a half dimensional (2.5D) one has been developed. In this article, the system is examined for transonic flows in the view point of its ability for practical application. All the examinations are done by computation, where, instead of PIV measurement velocity data, those of CFD simulation results are used. Firstly, the accuracy of estimated pressure distributions is verified for the flows of Mach 0.82. Secondly the isentropic relation of pressure and velocity is introduced as a convenient technique to impose boundary conditions for the Poisson equation. Then, the system is further examined if it is available to the variety of configuration of PIV measurement region. The results show that it has good ability for the variety of region sizes, shapes and the number of divided sub-regions.
