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Validation and verification of a planing craft motion prediction model based on experiments conducted on full-size crafts operating in real sea
Journal of Marine Science and Technology ( IF 2.7 ) Pub Date : 2020-03-04 , DOI: 10.1007/s00773-020-00709-6
Himabindu Allaka , Morel Groper

Planing crafts encounter large accelerations and motions when operated at high speeds in a seaway. To enhance their design and operability, accurate prediction of the accelerations and motions which these crafts will exhibit in a seaway is necessary. Here, validation and testing of a computational model for motion assessment of a planing craft in a seaway (MAPCS) are presented. To the best of the author’s knowledge, the literature does not contain studies of validation and verification of motion prediction models with full-size crafts operated in a real sea. The presented experiments were conducted on two planing crafts significantly different in size—a small remotely controlled craft (retrofitted Jet-Ski) and a large 24.8-m craft—both operated in a real sea. The MAPCS model, based on two-dimensional strip theory, improves previously developed motion assessment models by embedding within it a near-transom pressure correction and improved added-mass theory and provides computed values for acceleration, angular velocity, and expected motions. The incoming sea waves were measured by a wave buoy, deployed separately and developed in-house, and validated using a standard ocean observatory wave buoy. The wave-induced pitch and vertical acceleration computed by the MAPCS model are compared with the experimental recorded data and the differences are addressed.

中文翻译:

基于实海作业全尺寸船舶实验的滑行艇运动预测模型的验证与验证

滑行艇在海道中高速运行时会遇到很大的加速度和运动。为了提高它们的设计和可操作性,必须准确预测这些船只在航道中将表现出的加速度和运动。在此,介绍了用于航道中滑行艇运动评估 (MAPCS) 的计算模型的验证和测试。据作者所知,文献不包含对在真实海域中运行的全尺寸船只的运动预测模型的验证和验证研究。所展示的实验是在两种尺寸明显不同的滑行艇上进行的——一艘小型遥控艇(改装的喷气滑雪)和一艘 24.8 米的大型艇——两者都在真实的海洋中运行。MAPCS 模型,基于二维条带理论,通过在其中嵌入近横梁压力校正和改进的附加质量理论来改进先前开发的运动评估模型,并提供加速度、角速度和预期运动的计算值。传入的海浪由波浪浮标测量,单独部署并在内部开发,并使用标准海洋天文台波浪浮标进行验证。由 MAPCS 模型计算的波浪引起的俯仰和垂直加速度与实验记录的数据进行了比较,并解决了差异。并使用标准海洋天文台波浪浮标进行验证。由 MAPCS 模型计算的波浪引起的俯仰和垂直加速度与实验记录的数据进行了比较,并解决了差异。并使用标准海洋天文台波浪浮标进行验证。由 MAPCS 模型计算的波浪引起的俯仰和垂直加速度与实验记录的数据进行了比较,并解决了差异。
更新日期:2020-03-04
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