甘肃农业大学学报
甘肅農業大學學報
감숙농업대학학보
JOURNAL OF GANSU AGRICULTURAL UNIVERSITY
2013年
6期
154-159
,共6页
水平转盘%固体颗粒%差异旋转运动
水平轉盤%固體顆粒%差異鏇轉運動
수평전반%고체과립%차이선전운동
horizontal disc%solid particle%differences in rotational motion
为了说明固体单颗粒在旋转运动中受差异旋转惯性力的作用情况,试验使用高速摄像机来捕捉固体单颗粒的运动轨迹以获取其运动的参数,采用单颗粒运动学及动力学模型分析颗粒在旋转液流中的运动特性和受力规律。结果表明:颗粒在水平旋转圆盘内运动时,若转盘转速、颗粒初速度大小不同,则颗粒运动时受到的离心力与差异旋转惯性力数值大小不同。颗粒运动方向与转盘旋转方向一致时,颗粒速度与转盘转动速度之差为正,颗粒所受离心力方向与差异旋转惯性力方向一致,此时颗粒做离心运动;反之颗粒做向心运动。
為瞭說明固體單顆粒在鏇轉運動中受差異鏇轉慣性力的作用情況,試驗使用高速攝像機來捕捉固體單顆粒的運動軌跡以穫取其運動的參數,採用單顆粒運動學及動力學模型分析顆粒在鏇轉液流中的運動特性和受力規律。結果錶明:顆粒在水平鏇轉圓盤內運動時,若轉盤轉速、顆粒初速度大小不同,則顆粒運動時受到的離心力與差異鏇轉慣性力數值大小不同。顆粒運動方嚮與轉盤鏇轉方嚮一緻時,顆粒速度與轉盤轉動速度之差為正,顆粒所受離心力方嚮與差異鏇轉慣性力方嚮一緻,此時顆粒做離心運動;反之顆粒做嚮心運動。
위료설명고체단과립재선전운동중수차이선전관성력적작용정황,시험사용고속섭상궤래포착고체단과립적운동궤적이획취기운동적삼수,채용단과립운동학급동역학모형분석과립재선전액류중적운동특성화수력규률。결과표명:과립재수평선전원반내운동시,약전반전속、과립초속도대소불동,칙과립운동시수도적리심력여차이선전관성력수치대소불동。과립운동방향여전반선전방향일치시,과립속도여전반전동속도지차위정,과립소수리심력방향여차이선전관성력방향일치,차시과립주리심운동;반지과립주향심운동。
Using high-speed camera to capture solid single particle traj ectory for obtaining the move-ment parameters,and adopting single-particle kinematics and dynamics model to analyze the motion charac-teristics of the particles in a rotating flow and the regularity of force.The results showed that when parti-cles moved in a horizontal rotary disk,if the speed of rotary and the initial velocity of the particles were dif-ferent,the centrifugal force and rotational inertia force were also different.The difference between the speed of particle and turning dial was positive when the motor direction of particles and rotating disc were the same,the direction of centrifugal force and differences between the rotation inertia force suffered by particles were the same,the particles did centrifugal movement,conversely,the particles did centripetal movement.