發(fā)布時間：2018-04-22 23:26

  本文選題：內(nèi)孤立波 + 圓柱��； 參考：《水科學(xué)進展》2017年03期

【摘要】：隨著近岸海洋的開發(fā),海洋石油鉆井平臺底部的柱狀支撐以及海洋中石油管線等水下結(jié)構(gòu)物的安全問題受到的關(guān)注日益增多。而內(nèi)孤立波對水下結(jié)構(gòu)物的安全有著不可忽視的影響,這就決定了內(nèi)孤立波對柱體受力的研究在工程實踐中具有重要意義。國內(nèi)外就內(nèi)孤立波對柱體作用力的物理試驗研究較少,而在分層流環(huán)境下圓柱和方柱受力規(guī)律的對比研究更鮮有報道。在大型重力式分層流試驗水槽中,借助一套新型且專用于分層流環(huán)境下的內(nèi)孤立波造波及水動力測力系統(tǒng),進行了內(nèi)孤立波環(huán)境下柱體受力規(guī)律的試驗研究。對比分析了不同內(nèi)孤立波波幅對圓柱和方柱受力的作用規(guī)律。研究表明,在分層流環(huán)境下,隨著內(nèi)孤立波波幅的增大,圓柱和方柱所受的水平作用力均增大;相同波幅情況下,方柱相較于圓柱會受到更大的水平力。研究成果可為分層流環(huán)境中柱體設(shè)計及安全評價提供科學(xué)依據(jù)。
[Abstract]:With the development of offshore ocean, the safety of underwater structures such as the bottom of the offshore oil drilling platform and the oil pipelines in the ocean have been paid more and more attention, and the internal solitary waves have no negligible influence on the safety of underwater structures, which determines the study of the internal solitary waves on the force of the cylinder in engineering practice. It is of great significance. There are few physical tests on the internal solitary waves on the force of the cylinder, and the comparative study of the force law of cylindrical and square columns in the stratified flow environment is rarely reported. In a large gravity stratified flow test tank, a new set of internal solitary waves and hydrodynamic forces used in a laminar flow environment are used. The force system of the cylindrical and square columns under the internal isolated wave environment is tested and studied. The effects of the internal solitary wave amplitude on the force of the cylinder and the square column are compared and analyzed. The study shows that the horizontal force of the cylinder and square column increases with the increase of the amplitude of the internal solitary wave in the stratified flow environment. The column will be subjected to more horizontal force than the cylinder. The research results can provide a scientific basis for cylinder design and safety evaluation in the stratified flow environment.

【作者單位】： 河海大學(xué)水文水資源與水利工程科學(xué)國家重點實驗室;河海大學(xué)水利水電學(xué)院;南昌工程學(xué)院水利與生態(tài)工程學(xué)院;解放軍理工大學(xué)氣象海洋學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51479058) 高等學(xué)校學(xué)科創(chuàng)新引智計劃資助項目(B17015)~~
【分類號】：TE951
，

本文編號：1789436