船舶间冷循环多级动力涡轮气动优化设计（英文）

发布时间：2017-12-27 19:07

本文关键词：船舶间冷循环多级动力涡轮气动优化设计（英文）　出处：《推进技术》2016年03期 　论文类型：期刊论文

【摘要】：为了进行燃气轮机的间冷循环改造研究,需要对动力涡轮进行高效大功率重新设计。传统的准三维设计,由于对粘性影响的估算精度不够,导致设计和实际结果有一定偏差,尤其是对于多级涡轮设计,不但恶化了端部流场,还容易导致级间参数不匹配等问题。而近些年来的各种优化理论应用涡轮设计过程,由于计算量大、计算时间长、变量样本空间过于庞大,在实践中往往设计周期长,且难以有效实现。考虑了近端壁处粘性的影响,发展了一种基于传统无粘可控涡设计的局部环量再分布的先进涡设计技术,尽力减少端部二次流损失,并且改善叶片列间的匹配性能。基于CFD软件平台,将所发展的先进涡设计、级环境下单列叶栅局部优化和多级涡轮匹配优化联合实现多级涡轮的气动优化设计。最终所设计的间冷循环五级动力涡轮在满足设计流量的前提下,功率比设计值略高,轮周效率提高了1.36%,达到了轮周效率提高1%的设计要求。
[Abstract]:In order to study the transformation of intercooling cycle gas turbine, the need for high power power turbine was redesigned. Due to the lack of accuracy in estimating viscous effect, the traditional quasi three dimensional design leads to a certain deviation between the design and the actual results, especially for multi-stage turbine design, which not only worsens the flow field at the end, but also leads to mismatch between the interstage parameters. In recent years, various optimization theories applied to turbine design process, because of large computation time, long computation time and large variable sample space, in practice, the design cycle is long and difficult to achieve effectively. Considering the influence of viscous near the end wall, an advanced vortex design technology based on traditional reinviscid controllable vortex design is developed, which can minimize the loss of the secondary flow and improve the matching performance between the two rows. Based on the CFD software platform, the aerodynamic optimization design of multistage turbine is realized by combining advanced vortex design, single row cascade local optimization and multi-level turbine matching optimization. The final design of the five stage power turbine intercooling cycle in order to meet the design flow, the power value is slightly higher than the design, wheel efficiency increased by 1.36%, reaching 1% of the requirements to improve the efficiency of wheel design.
【作者单位】：哈尔滨工程大学动力与能源工程学院;
【基金】：国家自然科学基金项目(51406039) 中央高校基金项目(HEUCF140301)
【分类号】：U664.1
【正文快照】： 1 Introductionet al.[3]confirmed that the controlled vortex design tech-nique can effectively improve turbine performance andSince the 1980s,with the increasing power require-reduce rotor noise level by a comparative study of axial-ments of the main ship

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