Low Intensity Rainfall with a Rotating Disk Simulator
ABSTRACT THE Palouse Rainfall Simulator was designed to simulate storms of the Pacific Northwest. Such storms are characterized by their low intensities, long durations, and small drop sizes. A drop size distribution similar to that of storms with rainfall intensities of 2.5 to 10 mm/h was achieved by nozzle selection. Rainfall intensities of 6 to 46 mm/h were obtained by use of slotted rotating disks. The rotating disks had no significant effect on the drop size distribution. Application uniformity was slightly lower at the lowest intensity tested..