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首页> 外文期刊>The Journal of Experimental Biology >Functional geometry of ciliated tentacular arrays in active suspension feeders
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Functional geometry of ciliated tentacular arrays in active suspension feeders

机译：主动悬架喂料器中纤毛触角阵列的功能几何

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Parallel tentacular structures with lateral cilia that produce suspension-feeding and respiratory hows occur repeatedly in many diverse taxonomic groups, We use a computational hydrodynamic model of flow through ciliated tentacles to simulate flow rates through ciliated tentacle arrays. We examine the functional relationship of one performance measure, flow rate per unit length of array, to geometrical variables, such as cilia length, cilia tip speed and the gap between adjacent tentacles, and to hydrodynamic operating conditions, such as adverse pressure drops across the array, We present a scaling and interpolation scheme to estimate how rates for a wide range of geometries that span many taxa, Our estimates of flow rate can be coupled with the hydrodynamic characteristics of biological piping systems to understand design trade-offs between components of these systems. As a case study, we apply the model to the blue mussel Mytilus edulis by investigating the effect on performance of changes in the gap between neighboring tentacles. Our model suggests that the observed gaps between tentacles in M. edulis reflect flow-maximizing geometries. Even relatively weak adverse pressure drops have strong effects on flow-maximizing geometries and flow rates. One consequence is that an intermediate range of pressure drops may be unfavorable, suggesting that animals may specialize into high-pressure and low-pressure piping systems associated with differences in organism size and with their strategy for eliminating depleted water. [References: 46]
机译：在许多不同的分类学类别中，具有外侧纤毛的平行触手结构会产生悬浮物进食和呼吸行为，在许多不同的分类学组中反复发生。我们使用通过纤毛触手流动的计算流体力学模型来模拟通过纤毛触手阵列的流速。我们研究了一种性能指标，阵列每单位长度的流量与几何变量（例如纤毛长度，纤毛尖端速度和相邻触角之间的缝隙）以及流体动力学操作条件（例如整个容器上的不利压降）之间的功能关系。阵列，我们提出了一种缩放和插值方案，以估计跨许多类群的各种几何形状的速率。我们对流速的估算可以与生物管道系统的流体动力学特性结合使用，以了解这些组件之间的设计权衡系统。作为案例研究，我们通过研究相邻触角之间的间隙变化对性能的影响，将该模型应用于蓝贻贝贻贝。我们的模型表明，观察到的蓝靛果触角之间的间隙反映了流量最大化的几何形状。甚至相对较弱的不利压降也会对最大流量的几何形状和流速产生强烈影响。结果是中间的压降范围可能不利，这表明动物可能会专门研究高压和低压管道系统，这与生物体大小的差异以及消除枯水的策略有关。 [参考：46]

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