A method of determining selectivity curve of separator grid
A method of determining selectivity curve of separator grid
复制标题
一种确定分离器格栅选择性曲线的方法
DOI：
10.1016/0165-7836(95)00471-8
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发表时间：
1996
影响因子：
2.4
通讯作者：
K. Matuda
中科院分区：
文献类型：
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作者：
T. Tokai;S. Omoto;R. Satō;K. Matuda
本文介绍了用几种栅条间距的栅条分离器，从试验数据中确定栅条选择性曲线的理论和方法。网格选择性被定义为一条鱼在遇到网格时不通过网格的概率。假设网格选择性被视为一个筛选过程，网格选择性sg可以表示为横截面直径与栅条间距之比的函数，如下：sg（d，L）= Sg（R），其中L和d分别是鱼体的横截面直径和网格的栅条间距，R = L d。该模型的应用被证明是由捕鱼实验，使用三个网格与酒吧间距为8，10和15毫米，进行了虾梁拖网在日本内海。网格的选择性绘制对长度的酒吧间距，两种虾（南方粗糙虾Trachypenaeus curvirostris和螳螂虾口虾蛄Oratosquilla oratoria），两种螃蟹（Charybdid蟹Charybdis bimaculata和梭子蟹），和青蛙比目鱼Pleuronichthys cornutus。的无量纲参数R的选择性分析表明，对于每一个物种，一个单一的选择性曲线准确地描述了每个网格的数据作为网格选择性的主曲线。网格选择性的主曲线允许估计网格的选择性曲线，而不是本实验中测试的网格。
This paper describes a theory and method for determining a grid selectivity curve from the data of a fishing experiment using a grid separator with several bar spacings. Grid selectivity is defined as the probability that a fish does not pass through a grid given that it has encountered the grid. Assuming that grid selectivity is regarded as a sieve process, grid selectivity, sg, can be expressed as a function of the ratio of cross-sectional diameter to bar spacing as follows: sg(d,L) = Sg(R), where L and d are the cross-sectional diameter of the fish body and bar spacing of the grid, respectively, and R = L d . Application of the model is demonstrated by a fishing experiment using three grids with bar spacings of 8, 10 and 15 mm, carried out in a shrimp beam trawl in the Inland Sea of Japan. Grid selectivity was plotted against length by bar spacing, of two shrimp species (southern rough shrimp Trachypenaeus curvirostris and mantis shrimp Oratosquilla oratoria), two crab species (charybdid crab Charybdis bimaculata and portunid crab Portunus hastatoides), and frog flounder Pleuronichthys cornutus. The selectivity analysis in terms of the non-dimensional parameter R revealed that, for each species, a single selectivity curve describes accurately data of each of the grids as a master curve of grid selectivity. The master curve of grid selectivity allows estimation of the selectivity curve of grids other than those tested in this experiment.
日本生理学杂志48-1。
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