船后吊舱导管推进器系柱水动力数值预报方法研究

Research on numerical prediction for podded pipe propulsors in bollard condition

作为吊舱式推进器的一种形式,吊舱导管推进器因其附体复杂,且受到船尾线型及其他附体影响,水动力性能研究具有较大挑战.文中基于RANS求解流场,利用滑移网格技术处理螺旋桨的旋转,研究海工船舶船后吊舱导管推进器系柱水动性能数值预报,分析偏转角对不同位置吊舱导管推进器的系柱推力和扭矩影响,并通过模型试验结果,验证了该数值预报方法.

A podded pipe propulsor is a form of podded propulsion. Its complex attachments and the complex influence with the ship stern and other attachments make it a great challenge for hydrodynamic performance researchers. Numerical simulation method based on RANS with moving mesh technology to deal with rotating flow was applied to the prediction of the hydrodynamic performance for podded pipe propulsors working behind a marine vessel in bollard condition. The influence of turning angles was analyzed. Comparison with the model test results was carried out,which showed very good agreement and validated the numerical prediction method established here.