一、前言 带固体微粒或液滴的二相流的流动问题在管道输送、流化床、蒸发器、喷射器、分离器以及热能透平机械等能源热工技术领域中具有重要意义。本文讨论稀浓度的,含带微粒与主流可以是同或不同物质的,二相流流动并着重于烟气透平中气-固二相流及湿蒸汽透平级中含液滴二相流。 I. INTRODUCTION The flow problem of two-phase flow with solid particles or droplets is of great importance in the field of energy thermal engineering such as pipeline transportation, fluidized bed, evaporator, ejector, separator and thermal turbine. This article discusses the dilute concentration, with particles and the mainstream can be the same or different substances, two-phase flow and focus on the gas-solid two phase flow in the flue gas turbine and wet steam turbine stage containing droplets two phase flow .