FLUID DYNAMICS FOR TURBOMACHINERY DESIGN
Academic year and teacher
If you can't find the course description that you're looking for in the above list,
please see the following instructions >>
- Versione italiana
- Academic year
- 2015/2016
- Teacher
- MICHELE PINELLI
- Credits
- 6
- Curriculum
- INDUSTRIALE
- Didactic period
- Secondo Semestre
- SSD
- ING-IND/08
Training objectives
- Aim of the course in-depth study of the topics of fluid dynamics applied to the machines.
Prerequisites
- Turbomachinery, Numerical heat transfer and fluid flow
Course programme
- Continuity equation and Navier- Stokes
Energy conservation equation . Dissipation function . Equation in the form entropic
Boundary layer : definition, universal law of the wall, meaning of u + and y + , descriptive parameters .
Levels of approximation of the Navier -Stokes equations : Block diagram , RANS models 1 and 2 equations , models of the wall.
Levels of approximation of the Navier -Stokes equations : the block diagram, and TSL models approach viscous / inviscid models Distributed Loss , flow patterns in potential
Reference systems in turbomachinery : from Cartesian system ( x , y, z ) to the cylindrical (r , ¿ , z )
Reference systems in turbomachinery : description of the local system (m, n, ¿ ) and its relationship with the cylindrical (r, ¿ , z)
Demonstration of non-stationarity of the absolute reference system for the calculation of the flow within a turbomachine
Equations of motion in the reference system
Centrifugal forces and Coriolis forces . The Rossby number .
Balance of forces on the plane blade-to -blade channels in interpalari of centrifugal machines
Definition and concept of rotalpia
Distribution of velocity and pressure in a channel interpalare ( blade-to -blade )
Definition and comments on Blade Loading
Balance of forces on the meridian plane of centrifugal machines
The patterns of interaction rotor / stator Mixing Plane and Frozen Rotor.
Fluid dynamic phenomena in turbomachinery : secondary flows
Fluid dynamic phenomena in turbomachinery : secondary flows resulting from secondary flows
Fluid dynamic phenomena in turbomachinery : end flows
Fluid dynamic phenomena in turbomachinery : flows related to the presence of obstacles and definition of blockage Didactic methods
- Lectures. Laboratory exercises with the use of software programs.
Learning assessment procedures
- Project applied to a turbomachine with oral presentation. Oral questions.
Reference texts
- Dixon S.L.; Hall C.A., FLUID MECHANICS AND THERMODYNAMICS OF TURBOMACHINERY, Butterworth Heinemann
Osnaghi, C., Teoria delle turbomacchine, Esculapio Editore
