在传统螺旋桨敞水试验和空泡试验教学模式下,受限于各种条件的约束,学生只能在限定的时间和地点,利用限定的试验设备,观察特定的试验内容,极大地制约了对学生动手能力及工程创新能力的培养。而虚拟仿真技术的发展,克服了传统的试验教学...在传统螺旋桨敞水试验和空泡试验教学模式下,受限于各种条件的约束,学生只能在限定的时间和地点,利用限定的试验设备,观察特定的试验内容,极大地制约了对学生动手能力及工程创新能力的培养。而虚拟仿真技术的发展,克服了传统的试验教学模式短板,使得不受试验设备、时间和空间的智能教学系统得以实现。本文基于Unity 3D虚拟引擎和3ds Max三维建模软件搭建可视化交互场景,以空泡水筒为原型,利用Visual Studio Code软件,使用C#脚本语言为开发工具进行螺旋桨敞水试验和空泡试验虚拟仿真试验系统的搭建,实现了第一人称自由漫游,动手组装设备,零距离观察装置,试验数据分析等功能。船舶推进试验系统使学生更加了解螺旋桨敞水试验和空泡试验的原理、设备功能以及试验结果的应用价值等,实践能力和思考能力得以锻炼,同时该系统在很大程度上节省了教学资源,提高了教学质量和学习效率,在船舶教育教学中具有很强的应用前景和研究价值。展开更多
A fully automated optimization process is provided for the design of ducted propellers under open water conditions, including 3D geometry modeling, meshing, optimization algorithm and CFD analysis techniques. The deve...A fully automated optimization process is provided for the design of ducted propellers under open water conditions, including 3D geometry modeling, meshing, optimization algorithm and CFD analysis techniques. The developed process allows the direct integration of a RANSE solver in the design stage. A practical ducted propeller design case study is carried out for validation. Numerical simulations and open water tests are fulfilled and proved that the optimum ducted propeller improves hydrodynamic performance as predicted.展开更多
文摘在传统螺旋桨敞水试验和空泡试验教学模式下,受限于各种条件的约束,学生只能在限定的时间和地点,利用限定的试验设备,观察特定的试验内容,极大地制约了对学生动手能力及工程创新能力的培养。而虚拟仿真技术的发展,克服了传统的试验教学模式短板,使得不受试验设备、时间和空间的智能教学系统得以实现。本文基于Unity 3D虚拟引擎和3ds Max三维建模软件搭建可视化交互场景,以空泡水筒为原型,利用Visual Studio Code软件,使用C#脚本语言为开发工具进行螺旋桨敞水试验和空泡试验虚拟仿真试验系统的搭建,实现了第一人称自由漫游,动手组装设备,零距离观察装置,试验数据分析等功能。船舶推进试验系统使学生更加了解螺旋桨敞水试验和空泡试验的原理、设备功能以及试验结果的应用价值等,实践能力和思考能力得以锻炼,同时该系统在很大程度上节省了教学资源,提高了教学质量和学习效率,在船舶教育教学中具有很强的应用前景和研究价值。
基金financially supported by the National Natural Science Foundation of China(Grant No.51009090)the State Key Laboratory of Ocean Engineering(Grant No.GKZD010063)
文摘A fully automated optimization process is provided for the design of ducted propellers under open water conditions, including 3D geometry modeling, meshing, optimization algorithm and CFD analysis techniques. The developed process allows the direct integration of a RANSE solver in the design stage. A practical ducted propeller design case study is carried out for validation. Numerical simulations and open water tests are fulfilled and proved that the optimum ducted propeller improves hydrodynamic performance as predicted.