CAJ | 학술논문

为获取分层流体中螺旋桨尾迹的水动力学特性,在大型分层流水槽中采用多点组合探头阵列测量技术,对具有连续密度跃层流体中Suboff自航体模型螺旋桨产生的扰动特征进行了定量测量与分析。与拖曳体模型的尾迹特征比较,螺旋桨效应在分层流体中的水动力学尾迹具有特殊结构,其临界Froude数增大为Frs =4.4,波动中存在2种扰动波系,包含低频波动和非对称波形结构。相关结果不仅建立了对分层海洋中复杂螺旋桨效应的初步认识,也为分层海洋中螺旋桨水动力学尾迹建模及其应用提供了进一步的实验依据。
위획취분층류체중라선장미적적수동역학특성,재대형분층류수조중채용다점조합탐두진렬측량기술,대구유련속밀도약층류체중Suboff자항체모형라선장산생적우동특정진행료정량측량여분석。여타예체모형적미적특정비교,라선장효응재분층류체중적수동역학미적구유특수결구,기림계Froude수증대위Frs =4.4,파동중존재2충우동파계,포함저빈파동화비대칭파형결구。상관결과불부건립료대분층해양중복잡라선장효응적초보인식,야위분층해양중라선장수동역학미적건모급기응용제공료진일보적실험의거。
To obtain hydrodynamics characteristics of the propeller wake in the stratified fluid, the quantitative measurement & analysis of the disturbed characteristics produced by a standard SUBOFF model with an propeller in the large-type stratified fluid tank of continuous density pycnocline were conducted by means of the multi-channel conductivity-probe arrays. The special configurations about the propeller effect in the stratified fluid were obtained in comparison with the characteristics of the internal wave generated by a towed body. For example, the critical Froude number becomes Frs=4. 4, double-wave system exits in wave, and the propeller wake contains low frequen-cy behavior and asymmetrical structure. So some new understanding of the complicated propeller-effect in the ocean of stratification is established, and the more experimental evidences for the propeller-wake modeling and its applica-tion are provided.