Numerical Simulation Of Steam-cooling Turbine Blades

Gas turbine has the advantages of efficient, small volume, lightness, simpleness of maintenance, good flexibility, high reliability of operation, high degree of automatization and low cost. At present it is widely used in aviation, power station, natural gas transportation, petroleum, railway and shipbuilding industry. For compact high efficiency turbines to operate at near stoichiometric inlet temperatures, the cooling of turbine blades is a critical issue.Because the first stator blades are heavily thermally loaded, efficient blade cooling is necessary.With the rapid development of computational fluid dynamics and computer, Numerical simulation of cooling effectiveness at different sites on turbine blade surface has been possible, and exactly simulate the characteristic of flow field in turbine and surface cooling effectiveness, thus do not need many experiment.Using numerical simulation method to analysis and research the cooling effectiveness on turbine blade surface can improve reliability and reduce the cost. So numerical simulation method is a important means to research the inner mechanism of turbine.In this article, numerical simulation of three dimension steady outflow of the first stator blades of some turbine model is studied. First, according to the requirement of engineering software, using the software Unigraphics and ICEM make computational model and computational grid of the turbine, then using the software Fluent simulate the inner flow in turbine. During computing standard k-ε couple equation turbulence model and SIMPLE arithmetic are applied. And separately changing the diameter, inject direction and location of the film-cooling wholes on leading edge, the paper simulate blade temperature and...