CAJ | 학술논문

结合生产的实际需要,沿海浮绳式网箱生产的作用日益突出,因而研究其水动力特性非常重要。根据这一需要,采用预加张力的直交系泊方法,依据目前柔性浮绳式网箱尺寸和渔具模型试验方法设计、制作了一个柔性浮绳式网箱模型（1 m×1 m×1 m）,并进行了水槽试验。试验工况为规则波,周期为0.8～2.0 s（间隔0.2 s）,波高为50～250 mm（间隔40 mm）。在不同波浪周期、波高下,根据测量数据,分析研究作用在浮绳式网箱框架纲上波浪力的特性。试验结果表明：波浪力的变化与波浪特性相似,呈周期性、不对称变化,垂直于波浪方向的2根框架纲的波浪力峰值比与波浪方向平行的2根框架纲的稍小。框架纲上的波浪力不是同步变化的,存在一定相位差,但由于框架纲是柔性绳索制成的,因而能承受由于不同相位波浪力产生的扭矩剪切作用,证明了波浪作用下HDPE网箱常受到破坏而浮绳式网箱安然无恙的事实。最后,就水流和波浪共同作用下的网箱水动力学进行了试验研究,发现波流共同作用下的水动力值并不是单独在纯流和纯波下的水动力的值的简单相加,而存在一修正项。
결합생산적실제수요,연해부승식망상생산적작용일익돌출,인이연구기수동력특성비상중요。근거저일수요,채용예가장력적직교계박방법,의거목전유성부승식망상척촌화어구모형시험방법설계、제작료일개유성부승식망상모형（1 m×1 m×1 m）,병진행료수조시험。시험공황위규칙파,주기위0.8～2.0 s（간격0.2 s）,파고위50～250 mm（간격40 mm）。재불동파랑주기、파고하,근거측량수거,분석연구작용재부승식망상광가강상파랑력적특성。시험결과표명：파랑력적변화여파랑특성상사,정주기성、불대칭변화,수직우파랑방향적2근광가강적파랑력봉치비여파랑방향평행적2근광가강적초소。광가강상적파랑력불시동보변화적,존재일정상위차,단유우광가강시유성승색제성적,인이능승수유우불동상위파랑력산생적뉴구전절작용,증명료파랑작용하HDPE망상상수도파배이부승식망상안연무양적사실。최후,취수류화파랑공동작용하적망상수동역학진행료시험연구,발현파류공동작용하적수동력치병불시단독재순류화순파하적수동력적치적간단상가,이존재일수정항。
With the practical needs of production,coastal floating rope cage has increasingly prominent role.Thus,it is important and meaningful to carry out study of the hydrodynamic properties of a floating rope cage system under the effects waves in order to design better cages.A model of the floating rope cage（1 m×1 m×1 m）was designed according to the dimension of deep-sea cage in the method of pre-tensioned orthogonal mooring.The experiment was done in flume.The regular waves were generated in the experiment,with wave periodvarying from 0.8 to 2.0 s（0.2 s interval）and the wave height from 50 to 250 mm（40 mm interval）.The wave force was surveyed by tension transducer linked together with the computer.Then the data was analyzed,effects on the wave force properties of the ropes in frame from waves in different wave heights and periods.The conclusions were as following： Firstly,the wave force on the mooring lines change periodically and asymmetrically,which was similar to the experimental waves.At the same time,when analyzed the wave forced on the ropes in frame,it was found that： the peak values of the two ropes which were perpendicular to wave direction were smaller than that of the two ropes which were parallel to wave direction in cage A.Secondly,The changes of the wave force of the ropes were not synchronously,with some phase different.However,the frames were made of flexible ropes,so they can taken twisting moment and shearing action by wave force of various phases different,which proved the fact that HDPE sea cages were easily to be destroyed while floating rope cages were relatively safe.Finally,the experimental investigation on the hydrokinetics under combined action of wave and current were carried out.It is found that hydrodynamic force value was not equal to sum of hydrodynamic force values in the pure current and pure wave,and there was a correction term.