Optimization Of Turbine Blade Design

In traditional turbine blade design, the following process is generally followed: the overall performance department first determines the performance indicators that the blade needs to achieve, and then the structural design department designs the blade. After designing the blade that meets the aerodynamic performance requirements, it is handed over to the strength calculation department for strength vibration life calculation. If it is qualified, the blade design will come to an end. If it is not qualified, the design department will redesign it, and then the strength department will calculate it, This cycle, until the requirements are met, not only does this design have a long cycle, but it is also difficult to find the optimal design shape of the blades, which does not meet the requirements of modern aviation engine development.
This article [2] proposes the use of multidisciplinary design optimization (MDO) for the design of single stage solid turbine blades. MDO is an emerging interdisciplinary science and a product of the rapid development of aerospace technology. It has been a recent 20 years since MDO was opened up as a new research field. In the 1990s, active exploration and research in the field of MDO was carried out internationally, especially in the United States, and a large number of research papers related to this field are published every year; Currently, MDO is one of the latest and most active fields in the research of aircraft design methods internationally, but there is very little research and application in the field of aviation engines. For aviation engine turbine blades, due to the harsh working environment, they not only bear the centrifugal force of high-speed rotation, but also bear the forces of airflow flow field and temperature field. Therefore, their analysis will involve multiple disciplines such as aerodynamics, heat transfer, structure, strength, and vibration, It is a typical multidisciplinary design problem, and it is necessary to use multidisciplinary design optimization methods for design. The multidisciplinary design optimization method can simultaneously consider the influence of various disciplines, and use modern computer technology to analyze and compare hundreds or thousands of design solutions in a short time, eliminate the majority of non optimal solutions in advance, and approach the overall optimal solution of multiple disciplines step by step, thereby effectively improving design quality and greatly accelerating design progress.