| 摘要 |
PROBLEM TO BE SOLVED: To provide a particle image flow velocity measuring apparatus of three-dimensional space capable of raising measurement accuracy while reducing the number of cameras when a three-dimensional velocity field in the surroundings of an object is measured by using tomographic theory.SOLUTION: Since imaging means 14 for picking up a flow field including tracer particles includes a compound lens 22 consisting of many monocular lenses 22a for picking up an image picked up by an imaging lens 19, an influence of ghost particles is reduced while sharply reducing facility costs by suppressing the number of pieces of imaging means to the minimum by a fact that the plurality of monocular lenses function as one imaging means, respectively, not only to raise measurement accuracy but to easily secure a place for installing the imaging means. |
