Click on “Download PDF” for the PDF version or on the title for the HTML version.


If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Evaluation of the Wake of an Agricultural Ground Sprayer with the Wind from Any Direction

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Transactions of the ASABE. 59(5): 1205-1219. (doi: 10.13031/trans.59.11844) @2016
Authors:   Milton E. Teske, Harold W. Thistle, Ronald L. Petersen, Tom C. R. Lawton, Sergio A. Guerra, Travis G. Funseth
Keywords:   AGDISP, Ground sprayer, Subscale model, Tractor wake, Wind tunnel.

Abstract. Additional wind tunnel measurements of wind direction effects on the wake of a subscale tractor, tank, and spray boom model (representing a typical ground sprayer and henceforth referred to as a “spray rig”) are presented to demonstrate the behavior of the dominant air motions responding to the presence of a spray rig. The approach measures the velocity and turbulence levels (in three directions) with the wind blowing from five angles (from directly toward the front of the tractor to directly toward the back of the tractor in 45° increments). The results quantify the effect on wind direction and turbulence level by the presence of the spray rig model. The goal of this effort is to combine and analyze these measurements to describe the full-scale wake of a specific tractor/tank/spray boom combination. In this way, the wake model will augment local atmospheric and surface effects to better predict the behavior of material released from nozzles on a spray boom during actual ground sprayer operation.

(Download PDF)    (Export to EndNotes)