Open AccessStatic Analysis of the Last Stage Low Pressure Steam Turbine Blade to Improve Blade twist Angle
Author(s) -
Abolaji Joseph Omosanya,
Esther Titilayo Akinlabi,
Joshua Olusegun Okeniyi
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1107/1/012056
Subject(s) - turbomachinery , steam turbine , blade (archaeology) , mechanical engineering , turbine , turbine blade , aerodynamics , computational fluid dynamics , structural engineering , engineering , materials science , aerospace engineering
Demand for electricity is growing continuously and the production is still based on limited sources of energy, mainly the turbomachinery, which include basically the steam and gas turbines. Turbomachinery is responsible for about 80% of the electricity generated worldwide. A large variety of turbine blade geometries are in use today, however, there is no specific attempt made to compare them based on performance. This paper presents a study on the effect of the twist angle of the steam turbine blade on different choice blade materials. For the study, the aerodynamic and static loading of the 19th stage low pressure turbine blade of Egbin thermal power station was evaluated. Static analysis based on computational fluid dynamics (CFD) was used to simulate the conditions of the turbine blade during normal operating conditions. Alternative materials (such as stainless steel 316, Titanium alloy) and varying twist angles were observed to be showing different forms of results in the simulation on ANSYS. From these, an optimized twist angle was generated using Response Surface Optimization on ANSYS RSO, and the consequent results were discussed.