A marine hydrokinetic (MHK) cycloturbine is a renewable electric power generation system used in rivers or tidal environments to address the need for electricity in remote regions. MHK cycloturbines have hydrofoils oriented perpendicular to the flow in a paddlewheel configuration, and use lift generated from these foils to produce power. Due to the high cost associated with its operation and maintenance, an MHK system with four stacked counter-rotating turbines that can self-deploy and with propulsion and control mechanisms similar to a cycloturbine aircraft has been designed. A detailed turbine simulation model is necessary to understand the vehicle dynamics and assist in the design of the vehicle controllers. The simulation model solves the six degree-of-freedom rigid body equations of motion for the maneuvering MHK system subject to the hydrodynamic lift and drag forces, hydrostatic forces, and the propulsive forces from the turbines. The turbine propulsive force model is matched to computational fluid dynamics analysis and experimental data. Experimental work includes investigation at 1/5.56 scale of a single turbine rapid prototype device and a subscale demonstrator in a reverberant tank.

中文翻译：

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船用流体动力涡轮机车辆的建模

海洋流体动力 (MHK) 循环涡轮机是一种可再生发电系统，用于河流或潮汐环境，以满足偏远地区的电力需求。MHK 循环涡轮机具有垂直于水流方向的水翼，采用桨轮配置，并利用这些水翼产生的升力来产生动力。由于与运行和维护相关的高成本，设计了一个 MHK 系统，该系统具有四个堆叠的反向旋转涡轮机，可以自行部署，并具有类似于旋转涡轮飞机的推进和控制机构。详细的涡轮仿真模型对于了解车辆动力学和协助设计车辆控制器是必要的。该仿真模型求解受流体动力升力和阻力、流体静力和涡轮机推进力影响的机动 MHK 系统的六个自由度刚体运动方程。涡轮推进力模型与计算流体动力学分析和实验数据相匹配。实验工作包括在 1/5.56 比例下研究单涡轮快速原型装置和混响罐中的亚比例演示器。