局部进气涡轮研究进展综述

Review on Research Progress of Partial Admission Turbine

关键词:  综述  局部进气涡轮  损失预测模型  涡轮性能  优化设计

Key words:  Review  Partial admission turbine  Loss prediction model  Turbine performance  Optimization design

摘要:

涡轮是工业领域的重要部件之一，随着应用需求的多样化，涡轮的运行范围更广，而局部进气技术是实现多工况条件高效运行的关键手段之一。但局部进气会带来强烈的流场不均匀性和受力非定常性，增加了涡轮的设计和加工难度。本文首先对局部进气涡轮在不同领域的应用特征进行总结，其次对局部进气涡轮损失机理和性能影响因素开展分析，对比不同局部进气损失预测模型的精度，归纳局部进气涡轮的优化设计方法及性能提升效果，分析局部进气涡轮目前研究的不足，最终对局部进气涡轮发展趋势进行展望，为下一步局部进气涡轮性能改进提供方向。

Abstract:

Turbine is one of the important components in the industrial field. With the diversification of application requirements， the operation range of turbine becomes wider， and partial admission technology is one of the key means to achieve efficient operation under multiple working conditions. However， partial admission will bring strong inhomogeneity of flow field and unsteadiness of force， which increases the difficulty of turbine design and machining. Firstly， this paper summarizes the application characteristics of partial admission turbine in different fields. Secondly， the loss mechanism and performance influencing factors of partial admission turbine are analyzed， the prediction model precision of different partial admission turbine is compared， the optimization design method and performance improvement effect of partial admission turbine are summarized， the shortcomings of current research on partial admission turbine are analyzed. Finally， the development trend of partial admission turbine is prospected， which provides the direction for the performance improvement of partial admission turbine in the next step.