| 英文摘要 |
The towing tank at National Taiwan University is approaching its 40th anniversary and is equipped with a linear wave generator. This system employs a hydraulically controlled inclined-plate mechanism to perform regular reciprocat-ing motions. Given the increasing demand for experimental testing of ships and floating wind turbines under real sea conditions, enhancing the practicality of the wave generator in the towing tank is essential. This study develops the ap-plication of irregular waves based on the fundamental framework of regular waves by superimposing multiple regular waves to generate a specified wave spectrum in the time domain. However, the frequencies of different regular waves exhibit a nonlinear relationship with the generated signals, making direct superposition at the signal end unfeasible. To address this, the study employs feedback control for regular wave generation, measuring wave heights at various locations within the tank and tracking the stroke of the wave-making plate. These measurements are then used to calculate the mechanical energy conversion efficiency of the wave-making plate. By comparing these results with theoretical values from potential flow theory, the study establishes the relationship between the stroke of the wave-making plate and wave height. Based on this mechanism, future experiments can select appropriate stroke amplitudes and frequencies for the wave-making plate, as well as adjust the water depth in the tank, to achieve the desired experimental conditions. Moreover, this approach can also be adapted to simulate specific wave spectrum conditions, thereby supporting more precise sea-keeping tests. |
本站僅提供期刊文獻檢索。
