WATER FLOWS AROUND THE COMB PLATES OF THE CTENOPHORE PLEUROBRACHIA PLOTTED BY COMPUTER: A MODEL SYSTEM FOR STUDYING PROPULSION BY ANTIPLECTIC METACHRONISM
WATER FLOWS AROUND THE COMB PLATES OF THE CTENOPHORE PLEUROBRACHIA PLOTTED BY COMPUTER: A MODEL SYSTEM FOR STUDYING PROPULSION BY ANTIPLECTIC METACHRONISM
复制标题
用计算机绘制的栉水母侧腕梳板周围的水流：用于研究反瘫时变性推进的模型系统
DOI：
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
R. J. White
中科院分区：
文献类型：
--
作者：
D. Barlow;M. Sleigh;R. J. White
用悬浮的塑料珠跟踪了侧臂菌盖梳状板周围水流的模式。从覆盖几个节拍周期的高速电影胶片数字化梳状排的中心纵轴的平面中的珠和梳状板的位置。使用计算机程序将来自每个序列的所有数据组合，该计算机程序将它们整合到标准循环中，并且通过第二计算机程序绘制所得数据，以产生节拍循环中不同阶段的图表，该图表显示点网格处的流速。在这些图表上，绘制了等值线图来指示水流的速度和方向。水从前方和两侧被吸引到每一排梳子上，并在一条相当狭窄的小溪中向后加速，这条小溪在动物的后部与其他七排梳子的水流汇合。在10 Hz的拍频下，梳齿板在其有效行程中以高达70 mm s-1的尖端速度移动;在该行程中，梳齿板的雷诺数估计为9。在推进中，相邻的反向协调的板之间的板间体积的变化是非常重要的，特别是在接近有效冲程的末端时，当成对的相邻板靠近在一起时，并导致来自纤毛尖端周围的高速水以50 mm s-1或更高的速度作为一系列射流流入上覆流中。梳齿板的反列协调对推进效率作出了重大贡献。
Patterns of water flow around steadily beating comb plates of Pleurobrachia pileus were tracked using suspended plastic beads. The positions of the beads and the comb plates in the plane of the central longitudinal axis of the comb row were digitised from high-speed cine films covering several beat cycles. All of the data from each sequence were combined using a computer program which integrated them into a standard cycle, and the resulting data were plotted by a second computer program to produce charts for different stages in the beat cycle showing the flow velocity at a grid of points. On these charts, contour maps were drawn to indicate the speed and direction of the water flow. Water is drawn towards each comb row from ahead and from the sides and accelerates strongly backwards in a fairly narrow stream which joins those from the other seven comb rows at the rear of the animal. At a beat frequency of 10 Hz the comb plates move with a tip speed of up to 70 mm s-1 in their effective stroke; they have an estimated Reynolds number of 9 in this stroke. Changes in inter- plate volume between adjacent antiplectically coordinated plates are very important in propulsion, particularly near the end of the effective stroke when pairs of adjacent plates close together and cause the high-speed water from around the ciliary tips to be shed into the overlying stream as a series of jets at speeds of 50 mm s-1 or more. The antiplectic coordination of the comb plates makes a major contribution to the efficiency of propulsion.
栉水母 Pleurobrachia 捕获猎物期间的单侧纤毛逆转和运动反应。
DOI：
10.1242/jeb.114.1.443
发表时间：
1985
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Tamm,SL;Moss,AG
通讯作者：
Moss,AG
DOI：
10.1242/jeb.113.1.401
发表时间：
1984
期刊：
The Journal of experimental biology
影响因子：
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作者：
Tamm,SL
通讯作者：
Tamm,SL