Skip to main content
ARS Home » Midwest Area » West Lafayette, Indiana » National Soil Erosion Research Laboratory » Research » Publications at this Location » Publication #294422
Title: Kinetic energy of rainfall simulation nozzles

Author
item DE F B COLARES, MATHEUS - Universidade Federal De Lavras
item LIMA, PEDRO - Universidade Federal De Lavras
item LIMA, LUIZ - Universidade Federal De Lavras
item SILVA, MARX - Universidade Federal De Lavras
item Huang, Chi Hua

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 6/15/2013
Publication Date: 11/3/2013
Citation: De F B Colares, M., Lima, P., Lima, L.A., Silva, M.L., Huang, C. 2013. Kinetic energy of rainfall simulation nozzles [abstract]. ASA-CSSA-SSSA Annual Meeting, November 3-6, 2013, Tampa, FL. 2013 CDROM.

Interpretive Summary:

Technical Abstract: Different spray nozzles are used frequently to simulate natural rain for soil erosion and chemical transport, particularly phosphorous (P), studies. Oscillating VeeJet nozzles are used mostly in soil erosion research while constant spray FullJet nozzles are commonly used for P transport. Several characteristics of the rain nozzles are well defined in the literature, however some physical properties such as drop size, shape and fall velocity of rainfall, that enable to estimate kinetic energy are not well quantified. These information are important in order to estimate erosivity, which is the rain potential to cause disaggregation and transport of soil particles. To measure the velocity and kinetic energy of drops from artificial rains generated by those nozzles, a pluviometer developed in Brazil was used to obtain the velocity spectrum. In addition, an optical laser disdrometer, was used to measure and compare the kinetic energy of the nozzles tested. In this presentation, we will present kinetic energy measured from these two instrumentations at different intensities of these rainfall simulation nozzles. We will also show kinetic energy measured from natural rains and compare it with simulated rains.