直航状态下JBC船尾伴流场的风洞SPIV试验研究

SPIV Measurement of Flowfield after Japan Bulk Carrier at Straight Ahead Condition in Wind Tunnel

针对JBC(JapanBulkCarrier)基准船型,在风洞中采用重叠模型进行船尾螺旋桨盘面附近伴流场的体视粒子图像测速(SPIV)试验研究,获得模型尾部典型截面的三维速度场,测试得到的船尾桨毂附近的流场中存在明显的速度亏损,形成一对内旋的倒钩状漩涡。SPIV测试得到的JBC船尾伴流场与国外研究机构的测量结果吻合较好,丰富了该基准船型的试验数据,可用于船舶阻力和推进性能的优化。

The flowfield near the propeller disk after the double body model of JBC was measured by using the stereo-PIV velocimetry(SPIV)in the wind tunnel of China Ship Scientific Research Center(CSSRC).Three-component velocity in four typical sections were given and analyzed.The principle feature of hooked vortex and deficient of velocity were showed in the sections near the propeller disk.The measurement of SPIV was agreed well with the results from other international research institutes,which could be used to the validation of numerical simulation of surface ships and joined in the international benchmark database of JBC ship model.