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ANSYS Analysis: Turbine Blade Deflection - Static, Dynamic, FSI & Results, Slides of Physics
An in-depth analysis of turbine blade deflection using ansys software. The study includes static and dynamic analysis, fluid-structure interaction, and results such as velocity, pressure, temperature, and deflection variations with pitch and blade height. The objective is to understand the effect of blade deformation on turbine efficiency and performance.
Typology: Slides
2011/2012
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2
Contents
Introduction
Strategy
Static Analysis of Turbine Blade
Dynamic Analysis of Turbine Blade
1
2
3
4
Fluid Structure Interaction
Blade Deflection
5
6
7 Summary
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Objective
Using ANSYS the deflected blade shape will be obtained and the variation between the designed and deflected shape will be studied
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Strategy
Strategy adapted to attain the desired objective consists of following steps: Basic Study of Turbines Study of Coupled Field Analysis in ANSYS Blade Profile & Fluid domain Modeling in ANSYS Static Analysis of Turbine Blade Dynamic Analysis of Turbine Blade Coupled field analysis using ANSYS Study of deflected blade profile
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Blade Profile Specifications
Designed blade profile specifications are:
Blade Inlet Angle 21 o Blade Exit Angle 54 o Chord length 2.87 cm Blade Height 3.44 cm Blade Pitch 3.44 cm
ANSYS Analysis
Analysis consists of following steps:
Modeling Boundary Conditions Reference Conditions Solution Results
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Modeling
Passing B Spline
KSEL,S,,,2, BSPLIN,ALL
KSEL,ALL BSPLIN,109,110,115,1,
Cont…
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Modeling
Blade Area was created using B-Splines
AL,ALL
Cont…
13
Modeling
Fluid Channel was modeled keeping in mind the inlet and exit angle
Cont…
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Modeling
Blade areas were subtracted from channel area as they were of different materials
Cont…
16
Modeling
The complete geometry was extruded to a depth of same as blade height
Cont…
Static Analysis
Analysis Type: Steady State Adiabatic Compressible Turbulent
Fluid Properties: Density : AIR-SI Conductivity : AIR-SI Viscosity : AIR-SI Specific Heat : AIR-SI Density Variations: Yes
Termination Criteria
Pressure : 1 x 10-05^ Pa
Temperature : 1 x 10-06^ K
Velocity : 1 x 10-02^ m/sec
Global Iterations: 50
Stability Parameters
MIR Stabilization
Turbulence Equation : 0. Momentum Equation : 0. Energy Equation : 0.
Artificial Viscosity : 10 to 0