拖曳舱水动力船体流动的三维LDV映射

Day 1 Mon, July 23, 2001 Pub Date : 2001-07-23 DOI:10.5957/attc-2001-006

C. Chesnakas

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引用次数: 1

摘要

在David Taylor模型盆地(DTMB)开发了一种三速度分量激光多普勒测速(LDV)系统，用于获得拖曳舱水面船舶模型周围的流场。描述了系统的配置和操作，并详细分析了与系统测量相关的不确定度。介绍了某型喷水驱逐舰船体的测量结果。在这个船体上，速度场显示在入口，入口内部和射流出口的前面。将皮托管测量与推进器出口处的速度测量相结合，得到了静压场。它显示了如何使用这些测量来获得质量流量和流动畸变系数，从而可以评估推进性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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3-D LDV Mapping of the Flow About a Waterjet-Powered Hull in a Tow Tank

A three-velocity-component Laser Doppler Velocimetry (LDV) system has been developed at the David Taylor Model Basin (DTMB) for use in obtaining the flow field around tow-tank surface ship models. The system configuration and operation is described and a detailed analysis of the uncertainty associated with the system measurements is presented. Results of measurements on a waterjet-powered destroyer hull are presented. On this hull, velocity fields are shown ahead of the inlet, inside the inlet, and at the exit of the jet. Pitot tube measurements are combined with the velocity measurements at the propulsor exit to obtain the static pressure field. It is shown how these measurements are used to obtain mass-flow and flow distortion coefficients so that the propulsive performance may be evaluated.

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Day 1 Mon, July 23, 2001

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