Abstract
Flow visualization was conducted in a dialyzer header using particle imaging velocimetry. A full-scale model for visualization and a mixed solution mixed with glycerin and a sodium iodide solution as the working fluid was used. As a result, the jet flow from the inlet collided against the center surface of the end of a hollow fiber, went outside and caused eddies in the one-third radial position from the radial terminal of the inflow header. On the other hand, the uniform flow from the end of the hollow fiber accelerated by the contraction of the outlet header and went to the outlet. It was suggested that the velocity profile near the end of the hollow fiber in the outflow header is the most reliable PIV (particle imaging velocimetry) measurement data to validate the data by the other measurement method in the end of the hollow fiber of a dialyzer.
