Journal of Biosystems Engineering
- 제16권2호
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- Pages.133-141
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- 1991
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- 1738-1266(pISSN)
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- 2234-1862(eISSN)
자탈형(自脫型) 콤바인 환원장치(還元裝置)의 환원물(還元物) 유동현상(流動現象)과 환원성능(還元性能) 개선(改善)에 관한 연구(硏究)(II) -환원물(還元物) 유동(流動)의 이론해석(理論解析)과 실험분석(實驗分析)-
Tailings Behavior and Performance of the Tailings Return Unit of the Head-feed Combine(II) -Theoretical and Experimental Analysis of Tailing Behavior-
- 발행 : 1991.06.29
초록
This study was undertaken to investigate the structural and configurational characteristics of the tailings return-unit in the commercially available head-feed combines and to study the aero-dynamical behavior of the tailings in the units. The mathematical model of the motion of tailings in the thrower casing was developed and the simulated trajectories for different type of units was analyzed to compare with the measured ones. The air-stream velocity profile in various locations along the tailings returning duct was measured to find the effect of configurational characteristics and blade tip speed. The results of the study are summerized as follows. 1. The ejecting angle, which is the angle between the direction of the particle velocity ejecting from the blade and the horizontal axis, was found to be about
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