Improving the efficiency of radial-axial rotors of turbine stages through the use of complex lean of trailing edges

• Дата: 2016
• Автори: Rusanov, R. A., Rusanov, A. V., Lampart, P., Chugay, M. A.
• Формат: Стаття
• Мова: English
• Опубліковано: Journal of Mechanical Engineering 2016
• Теми: radial-axial turbine; flow part; analytical method of profiling; spatial flow; numerical modeling; complex lean; УДК 621.165; 532.6; радиально-осевая турбина; проточная часть; аналитический метод профилирования; пространственное течение; численное моделирование; сложный навал; радіально-осьова турбіна; проточна частина; аналітичний метод профілювання; просторова течія; чисельне моделювання; складний навал
• Онлайн доступ: https://journals.uran.ua/jme/article/view/86758
• Назва журналу: Journal of Mechanical Engineering

The influence of shape of the blade trailing edges on the flow patterns and integral flow characteristics of the radial-axial turbine rotors is investigated. Also a modified analytical method of design of spatial blades of radial-axial rotors with complex lean of leading and trailing edges is proposed. A radial-axial rotor designed for a turboexpander unit of a complex gas treatment plant working in a gas condensate field is chosen as an object of investigations. Three types of rotors are considered having the same geometry of meridional contours, but differing in shape of blade trailing edges. In the first variant of the rotor its blades have radial trailing edges, in the second variant the trailing edges are straight with circumferential lean, and in the third variant they are designed in the form of arcs leaned in the circumferential direction. It is shown that the application of complex lean of trailing edges of low-loaded radial-axial rotor blades allows us to increase the flow efficiency by 3.1% compared with the rotor blades having radial trailing edges