In many of the product lines of Mitsubishi Heavy Industries, Ltd. (MHI), fluids such as liquid
and air are used. Therefore, understanding the behaviors and characteristics of velocity and
temperature distribution in a flow field by actual measurement is the key to improving product
performance. One of the technologies for responding to this need is Phosphorescent PIV, for which
MHI has been developing applicable technology to product development testing with the cooperation
of the National Institute of Advanced Industrial Science and Technology. This method is PIV using
thermographic phosphor, which enables the simultaneous measurement of two-dimensional
distribution of velocity and temperature. The measurement procedure was verified using a test flow
channel and the correlation between the distribution of flow velocity and temperature was evaluated.
