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Home Industrial Technologies Software Package for Analysing 3-D Non-Stationary Viscous Gas Flow Through a Stage of Axial Flow Turbomachine Taking into Account Blade Oscillations

Software Package for Analysing 3-D Non-Stationary Viscous Gas Flow Through a Stage of Axial Flow Turbomachine Taking into Account Blade Oscillations

Description

Aerodynamic, elastic and accelerative forces in turbomachines acting on blades can cause increased vibrations, which limit turbines’characteristics and serviceability. Realizing physics of non-stationary viscous flows and developing methods of forecasting aeroelastic characteristics of blade rows is very important for increasing economy, reliability and life of turbosets. Mathematical model, algorithm and software package for solving conjugate problems of aerodynamics and elastic oscillations are suggested. Aerodynamic model is presented by 3-D equations of Navie- Stocks describing non-stationary viscous flow through a stage of a turbomachine. Dynamic model applies a modal approach and 3-D finite element analysis. Successive integration of aerodynamic equations and elastic oscillations with the use of march diagram of time allowed setting a problem of gas flow through a turbomachine stage correctly not dividing non-stationary phenomena caused by external flow irregularity and blade oscillations.

Innovative Aspect and Main Advantages

Application of software package allows increasing economy of turbine stage in 1-3% (due to selection of optimal shape of blades and flow pattern) and forecasting aeroelastic behavior and stress in blade rows. The development has world-wide priority.

Areas of Application

Power machine building, aircraft gas-turbine construction, gas-turbine equipment for gas-transfer stations. Would-be customers – design office and enterprises engaged in designing and producing of steam and gas-turbine equipment.

Stage of Development

Mathematical model, numerical method and algorithm of problem solving is developed. The development is now on debugging and program testing stage.

Contact Details

A.N. Podgorny Institute for Mechanical Engineering Problems NAS of Ukraine
Contact person: Professor, Doctor of Technical Science, V. I. Gnesin
Address: 2\10, Pozharsky str., 61046, Kharkiv, Ukraine
Tel.: (+38 0572) 941 867
Fax: (+38 0572) 944 635, 942 744
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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