本文選題：浮式風(fēng)機　切入點：動力響應(yīng)　出處：《上海交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著世界能源需求的增長，和人們對環(huán)境問題的關(guān)注，清潔的可再生能源已成為近期的研究熱點。清潔的可再生能源主要包括風(fēng)能，波浪能，潮汐能，太陽能以及生物能等形式。其中，，風(fēng)能已成為近年來發(fā)展最快的能源形式之一。受到選址、噪聲和視覺污染等因素的影響，工業(yè)界和研究者開始由陸上風(fēng)電場的開發(fā)利用轉(zhuǎn)向?qū)Ｉ巷L(fēng)電場的研究。隨著水深的增加，海上風(fēng)電場的支撐形式逐漸由固定式支撐基礎(chǔ)過渡為浮式支撐基礎(chǔ)。對海上浮式風(fēng)機來說，它是一個綜合的水動力-空氣動力-彈性體-控制復(fù)雜系統(tǒng)，目前還面臨著許多工程挑戰(zhàn)和問題需要解決。 本文主要利用數(shù)值計算方法，對一種典型的單柱式Spar作為支撐結(jié)構(gòu)的5MW風(fēng)機進行了整體動力響應(yīng)研究。探討了研究對象在不同海況條件下的運動和載荷響應(yīng)性能，并進一步對浮式風(fēng)機模型試驗設(shè)計進行了研究，討論了其面臨的尺度效應(yīng)問題，提出了初步的解決方案。本文具體研究內(nèi)容如下： 1.對目前海上浮式風(fēng)機的設(shè)計概念進行了介紹，重點介紹了海上浮式風(fēng)機動力響應(yīng)的不同研究方法及研究現(xiàn)狀。 2.運用頻域勢流理論，對OC3-Hywind Spar浮體進行了頻域水動力性能計算，得到了其附加質(zhì)量、阻尼系數(shù)和一階波浪力等頻域水動力系數(shù)。通過頻域勢流計算，對OC3-HywindSpar的水動力性能進行初步評估，并為后續(xù)整個風(fēng)機系統(tǒng)的耦合時域計算做出準備。 3.應(yīng)用整體時域計算程序，對OC3-Hywind Spar浮體作為支撐結(jié)構(gòu)的NREL5MW風(fēng)機進行了整體動力響應(yīng)計算，得到了其在不同海況條件下的運動和載荷響應(yīng)性能結(jié)果，并討論了風(fēng)浪載荷對系統(tǒng)動力響應(yīng)性能的不同影響。 4.對浮式風(fēng)機水池模型試驗的相似準則進行了討論分析，提出了關(guān)于雷諾數(shù)不相似所造成的尺度效應(yīng)問題，并提出了初步的解決方案。 本文的研究內(nèi)容對海上浮式風(fēng)機在不同海況下的整體動力響應(yīng)特性進行了研究，對未來海上浮式風(fēng)機系統(tǒng)的設(shè)計和分析都有較好的參考意義。
[Abstract]:With the increase of energy demand in the world and people's attention to environmental problems, clean renewable energy has become a hot topic in recent years. Clean renewable energy mainly includes wind energy, wave energy, tidal energy. Wind energy has become one of the fastest-growing forms of energy in recent years. It is affected by factors such as location, noise and visual pollution. Industry and researchers began to shift from the development and utilization of onshore wind farms to offshore wind farms. The support form of offshore wind farm is gradually changing from fixed support foundation to floating support foundation. For offshore floating fan, it is a complex system of hydrodynamics, aerodynamics, elastomer and control. At present, there are still many engineering challenges and problems to be solved. In this paper, the dynamic response of a typical 5MW fan with a single column Spar as its supporting structure is studied by numerical method, and the motion and load response performance of the studied object under different sea conditions is discussed. Furthermore, the model test design of floating fan is studied, the scale effect problem is discussed, and a preliminary solution is put forward. The specific contents of this paper are as follows:. 1. The design concept of floating fan at sea is introduced, with emphasis on different research methods and research status of dynamic response of floating fan at sea. 2. Using the theory of potential flow in frequency domain, the hydrodynamic performance of OC3-Hywind Spar floating body in frequency domain is calculated, and its additional mass, damping coefficient and wave force in frequency domain are obtained. The hydrodynamic performance of OC3-HywindSpar is preliminarily evaluated and the coupling time domain calculation of the whole fan system is prepared. 3. The integral dynamic response of the OC3-Hywind Spar fan with the floating body as the supporting structure is calculated by using the whole time domain calculation program, and the results of its motion and load response under different sea conditions are obtained. The effects of wind and wave loads on the dynamic response of the system are discussed. 4. The similarity criterion of model test of floating fan pool is discussed and analyzed, and the scale effect caused by Reynolds number dissimilarity is put forward, and a preliminary solution is put forward. In this paper, the overall dynamic response characteristics of floating fan at sea under different sea conditions are studied, which has a good reference significance for the design and analysis of floating fan system on the sea in the future.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM614;U674.38

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