大功率汽轮机低压级组小容积流量工况流场计算

Calculation of Flow Field of Large Steam Turbines Low Pressure Stages at Small Volumetric Flow

针对大功率汽轮机低压级组在小容积流量工况下通流部分的流动特点，建立了小容积流量工况下低压级组内子午面流动的计算模型，提出了一种轴对称流动的数值计算方法，并进行了实例计算与分析。

Based on the flow characteristics of large steam turbines low pressure stages at small volumetric flow,in this paper,a flow calculation model on meridian flow surfaces is established,and a numerical calculation method for axial symmetry flow is developed.An example is calculated with this method.The result is satisfactory.