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The application of pesticides is often not considered in any detail in university and polytechnic curricula, especially in developing countries. Because application equipment involves chemicals and issues of toxicity and environment, the topic is frequently omitted from agricultural engineering courses. This, in turn, means that extension agents are weak in this area reinforcing the need for effective practical training for those who apply pesticides. In this study, an experimental swirl chamber nozzle (SCN) was designed, developed and constructed. Thereafter, a series of tests were carried...

Equations of dynamic systems in droplet distributions and boundary value flows in the swirl chamber were used in conjunction with momentum equations of forces on moving curved vanes to develop mathematical models.The models were used to simulate the post-exit behaviour of moving droplets in still air,the theoretical performance of a high pressure agro-forestry swirl nozzle as well as the angular acceleration of its swirl element and attained rotative speed after ten seconds ofacceleration when made with steel,aluminium,brass and plastic. The extreme conditions that sensitively influenced the...