Full-scale total wake field PIV-measurements in comparison with ANSYS CFD calculations: a contribution to a better propeller design process
Full-scale total wake field PIV-measurements in comparison with ANSYS CFD calculations: a contribution to a better propeller design process
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DOI：
10.1007/s00773-016-0418-6
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发表时间：
2017-03
影响因子：
2.6
通讯作者：
A. Kleinwächter;K. Hellwig-Rieck;H. Heinke;N. Damaschke
中科院分区：
文献类型：
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作者：
A. Kleinwächter;K. Hellwig-Rieck;H. Heinke;N. Damaschke
在提高推进效率的同时减少振动和水下噪声的强烈需求影响着螺旋桨的设计过程。因此，精确的空化预测是必要的，而空化预测的基础是对全尺寸尾流场的精确预测。由于大规模测量的大量实验工作，目前的计算和预测算法没有得到实际数据集的充分验证。在此背景下，联合研发项目KonKav II首次使用粒子成像测速技术来确定全尺寸尾流。无创技术提供了可靠的速度数据集。与CFD计算的比较揭示了尾流峰宽度的有趣见解，并表明了模拟和测量的准确性。研究结果有助于改进空化预测算法，并鼓励对不同船尾截面和推进系统的船舶进行进一步的比较研究。
The propeller design process is influenced by a strong demand to reduce vibrations and underwater noise while improving propulsion efficiency at the same time. Therefore, an accurate cavitation prediction is mandatory, which is based on a precise prognosis of the full-scale wake field. Due to the enormous experimental effort of full-scale measurements, current calculation and prognosis algorithms are not validated sufficiently with real data sets. Against this background, particle imaging velocimetry was used in the joint research and development project KonKav II to determine a full-scale wake flow for the first time. The noninvasive technique delivered reliable velocity data sets. The comparison with CFD calculations revealed interesting insights about the width of the wake peak and indicated simulation as well as measurement accuracies. The results can contribute to better cavitation prediction algorithms and encourage further comparative investigations of vessels with different stern sections and propulsion systems.