Dripping Rainfall Simulators for Soil Research—Performance Review

Rainfall simulators represent often-used equipment for soil research. Depending on their performance, they could be appropriate some research or not. The aim of this is to provide insight into the capabilities existing dripping rainfall (DRS) mimic natural and frequency simulated rainfalls certain characteristics, facilitate selection rain that would best meet needs reach a step closer standardization simulators. DRS performance was analyzed integrally, with more than one dripper (DRS>1) (DRS=1). A statistical analysis performed DRS, wetted area, drop size, intensity, duration kinetic energy. showed can corresponds rainfall, except in terms size distribution area. However, usually there are factors do not correspond such as median volume Metal plastic tubes (MT PT) most present types strong relation between outer diameter (OD) while inner (ID) moderate-to-weak. when increasing range MT drippers, significance becomes very bouts ID OD. With increase PT, deviates from logarithmic curve represents all drippers together. sizes drops generated by mostly 2 6 mm, number smaller mm relatively small. intensity successfully produced match values, frequently short-term high intensity. Most simulations were conducted at fall height up m, then gradually decreases gets 5 m. (58.6%) occur 20-90% KE, 33.0% 90-100%, only 8.4% lower 20% KE.