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Prediction of an actual RPM and engine power of an LNGC based on full-scale measurement data

机译:基于满量程测量数据预测LNGC的实际RPM和发动机功率

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摘要

It is important to predict the actual RPM and engine power of a ship because it helps the ship builder and seafarer understand the actual performance of the ship. However, a precise prediction is difficult because it is closely connected to the ship design, resistance, seakeeping, maneuvering performance, etc., synthetically. In this paper, we propose a new approach to predict the actual RPM and engine power of an LNGC from full-scale measurement data considering the described performance. The sea route, speed over ground and environmental conditions obtained from the measured data are additionally used to simulate sailing of the ship from the coast of southern Taiwan to the coast of Madagascar for 14 days. The results of the simulation are qualitatively reviewed by comparing the calculated time histories of the RPM and the power with the measured RPM and power. The results are quantitatively analyzed by comparing the time histories of errors between the measured values and calculated values. Finally, the power increment due to the environmental load is estimated by comparing the predicted power considering the environmental load with the predicted power, not considering the environmental load.
机译:预测船舶的实际RPM和发动机功率非常重要,因为它有助于船舶制造商和海员了解船舶的实际性能。然而,精确的预测是困难的,因为它与船舶的设计,阻力,海上维护,操纵性能等密切相关。在本文中,我们提出了一种新方法,可在考虑到所描述性能的情况下,从满量程测量数据预测LNGC的实际RPM和发动机功率。从测量数据获得的海路,地面速度和环境条件还可以用来模拟该船从台湾南部海岸到马达加斯加海岸航行14天。通过将计算得出的RPM和功率的时间历程与测得的RPM和功率进行比较,定性地回顾了仿真结果。通过比较测量值和计算值之间的误差的时间历史,对结果进行定量分析。最后,通过将考虑了环境负荷的预测功率与不考虑环境负荷的预测功率进行比较,来估计由于环境负荷引起的功率增量。

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