【摘要】：針對(duì)一種具有半潛—水面航態(tài)變換功能的新型潛伏式高速船型,基于非穩(wěn)態(tài)RANS方程組與VOF模型求解粘性流場(chǎng),結(jié)合動(dòng)態(tài)流域邊界與滑移網(wǎng)格技術(shù),對(duì)目標(biāo)船在垂直面內(nèi)三自由度運(yùn)動(dòng)及其噴水推進(jìn)器葉輪隨船定軸高速旋轉(zhuǎn)的耦合運(yùn)動(dòng)進(jìn)行數(shù)值模擬。結(jié)果表明,在相同主機(jī)平均轉(zhuǎn)速條件下,所預(yù)報(bào)自航點(diǎn)體積傅氏數(shù)與自航模型試驗(yàn)結(jié)果的相對(duì)誤差在7%以內(nèi);從半潛到水面的航態(tài)變換過(guò)程中,船體有顯著的縱傾與升沉,船體主要克服壓差阻力,船體興波由相互疊加的首波、肩波、尾波逐漸發(fā)展為首尾分明的兩個(gè)波系,在噴水推進(jìn)器射流區(qū)內(nèi)捕捉到生成和發(fā)展的高強(qiáng)度渦系。
[Abstract]:Aiming at a new type of latent high-speed ship with the function of semi-submersive-surface navigation state transformation, the viscous flow field is solved based on the unsteady RANS equations and VOF model, and the dynamic basin boundary and sliding grid technology are combined to solve the viscous flow field. The coupled motion of the target ship with three degrees of freedom in the vertical plane and the impeller of the water jet propeller rotating with the ship's fixed axis at high speed is numerically simulated. The results show that the relative error between the predicted volume Fourier number and the model test results is less than 7% under the same average speed of the main engine. In the course of the change of ship's state from half to the water, the hull has significant trim and heave, and the hull mainly overcomes the pressure differential resistance, and the hull waves are gradually developed from the superimposed first wave, shoulder wave and coda wave to two distinct head-and-tail wave systems. High intensity vortices generated and developed were captured in the jet zone of the water jet propeller.
【作者單位】： 海軍工程大學(xué)艦船工程系;
【分類號(hào)】：U661.7

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