Radial-inflow turbine is the core equipment in supercritical carbon dioxide(S-CO_2) power cycle system

and its performance has a direct impact on overall performance of the system. In this paper

the loss model

the deviation angle model

the one-dimensional optimal design method and the research on aerodynamic performance of the S-CO_2 radial-inflow turbine at home and abroad are summarized from the perspective of theoretical research. Moreover

from the perspective of experimental research

the research results of the S-CO_2 radial-inflow turbines in the United States

South Korea

Japan

China and other countries are summarized. It provides a reference for the design and research of S-CO_2 radial-inflow turbines.