1429 PSP を用いた低密度気体流と干渉する固体表面の圧力計測  [in Japanese] Pressure Measurement of Surface Interacting with Low Density Gas Flows using PSP  [in Japanese]

The PSP technique has the capability to be applied to high Knudsen number flows, such as low density gas flows, micro-flows, etc. In this study, to inspect the feasibility of PSP for measurement of pressure on a solid surface in the high Knudsen number flows, fundamental properties of three types of PSP [PdTFPP/poly(TMSP), PdOEP/poly(TMSP) and PtTFPP/poly(TMSP)] are examined especially in the range of pressure below 133.3Pa(1Torr). As an application of PSP to low density gas flows, we measure the pressure distribution on a spike surface of the Aerospike nozzle, using PtTFPP/poly(TMSP) with high pressure sensitivity over a wide range of pressure. The pressure sensitivities against nitrogen oxide are also examined for the above PSPs, to develop a technique for the simultaneous measurement of the flow field structure and the surface pressure, using NO-LIF and PSP, respectively.