水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
3期
204-208
,共5页
双筒液流%固体颗粒%旋转运动%离心力%差异旋转惯性力
雙筒液流%固體顆粒%鏇轉運動%離心力%差異鏇轉慣性力
쌍통액류%고체과립%선전운동%리심력%차이선전관성력
binoculars flow%solid particle%rotary motion%centrifugal force%different rotational inertia-force
利用泰勒涡胞试验,采用单颗粒运动学及动力学模型,从差异旋转惯性力角度分析固体单颗粒在旋转液流两种情况下的运动特性和受力规律。试验结果表明:在内筒持续旋转、外筒始终静止水流情况下,固体单颗粒所受到的离心力绝对值大于其所受差异旋转惯性力绝对值,且离心力方向与差异旋转惯性力方向一致,固体单颗粒做离心运动,其所受的离心力数值与差异旋转惯性力数值在1个数量级左右;在内筒先旋转后静止、外筒静止的试验条件下,固体单颗粒所受到的离心力绝对值小于其所受差异旋转惯性力绝对值,且离心力方向与差异旋转惯性力方向相反,固体单颗粒做向心运动,其所受的离心力数值与差异旋转惯性力数值在同一数量级。
利用泰勒渦胞試驗,採用單顆粒運動學及動力學模型,從差異鏇轉慣性力角度分析固體單顆粒在鏇轉液流兩種情況下的運動特性和受力規律。試驗結果錶明:在內筒持續鏇轉、外筒始終靜止水流情況下,固體單顆粒所受到的離心力絕對值大于其所受差異鏇轉慣性力絕對值,且離心力方嚮與差異鏇轉慣性力方嚮一緻,固體單顆粒做離心運動,其所受的離心力數值與差異鏇轉慣性力數值在1箇數量級左右;在內筒先鏇轉後靜止、外筒靜止的試驗條件下,固體單顆粒所受到的離心力絕對值小于其所受差異鏇轉慣性力絕對值,且離心力方嚮與差異鏇轉慣性力方嚮相反,固體單顆粒做嚮心運動,其所受的離心力數值與差異鏇轉慣性力數值在同一數量級。
이용태륵와포시험,채용단과립운동학급동역학모형,종차이선전관성력각도분석고체단과립재선전액류량충정황하적운동특성화수력규률。시험결과표명:재내통지속선전、외통시종정지수류정황하,고체단과립소수도적리심력절대치대우기소수차이선전관성력절대치,차리심력방향여차이선전관성력방향일치,고체단과립주리심운동,기소수적리심력수치여차이선전관성력수치재1개수량급좌우;재내통선선전후정지、외통정지적시험조건하,고체단과립소수도적리심력절대치소우기소수차이선전관성력절대치,차리심력방향여차이선전관성력방향상반,고체단과립주향심운동,기소수적리심력수치여차이선전관성력수치재동일수량급。
By using Taylor’s vortex-cell experiment and the single-particle model with kinematics and dynamics ,the mo-tion characteristics and laws of the solid single-particles under two conditions of rotary and fluid flow were analyzed from the point of different rotational inertia-force .The experimental results indicate that under the conditions of inner cylinder rotating and outer cylinder being static ,the absolute value of the solid single particles from centrifugal force is greater than that from different rotational inertia-force ,and the direction of the centrifugal force is same with that of the different rotational inertial-force ,simultaneously ,the solid single partictes do centrifugal motion ,and their centrifugal force value is about one order of magnitude with their different rotational inertia-force value ;On the contrary ,under the conditions of the inner cylinder totating firstly and then being static and the outer cylinder being static ,the obsolute value of the solid single particles from the centrifugal force is smaller than that from the different rotational inertia-force ,and the direction of the contrifugal force is contrary with that of the different rotational inertia-force ,simultaneously ,the solid single parti-cles do centripetal motion ,and their centrifugal force value is in the same order of magnitude with their different rotational inertia-force value .