48 pages : 28 cm

Current spray materials utilizaed by the USDA Forest Service are non-Newtonian in nature; a better understanding of their atomization behavior will improve their efficiency, efficacy, and total accountantacy and environmental fate. Thus, this study first reviews the state of Newtonian and non-Newtonian spray material characteristics, and attempts data compression with available wind tunnel data. Starting with first principles of dimensional analysis, we develop consistent nondimensional parameters that group into well-accepted numbers, such as the Reynolds and Weber numbers. We correlate the water atomization test runs from the USDA Forest Service drop size distribution data base with simple expressions that recover the details of the spray. Then we speculate upon the form of the non-Newtonian terms for the atomization of viscoelastic fluids. Finallly, we suggest that a systematic laboratory benchtop examination of applicable non-Newtonian materials be undertaken, followed by a consisten set of wind tunnel tests to encompass anticipated spray materials and field conditions

Includes bibliographical references (pages 45-48)

plus-circle Add Review

comment

Reviews