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Hydro Kinetic Turbine (Background (Areas of use (Tidal currents, River…

- - - - Blade Size/Number
      - Flow Characteristics
      - Turbine Placement
      - Tip Speed Ratio
      - Blade Geometry
    - - Confinement
      - Channel Modifications
      - Multiple turbine applications
  - - - Horizontal Axis
        
        Rigid Mooring
        
        Buoyant Mooring
      - Parallel to current direction
      - Rotor plane perpendicular to the current to ensure power conversion efficiency
    - - Vertical Axis
        
        SC- Darrieus (Straight Blade)
        
        H- Darrieus (Straight Blade)
        
        Darrieus (Curved)
        
        Savonius (Straight/Skewed)
        
        Gorlov (Helical)
      - Perpendicular to current direction
      - Not dependent on flow direction and can operate in any orientation perpendicular to the flow
  - - - Cavitation
      - Betz Limit
      - Low Power Coefficient
      - Torque variation during revolution
    - - Minimal impact on biodiversity
      - Good choice for electrification for off grid communities
      - Minimal civil works
- - - - Features relevant for QBlade
        
        Viscous or inviscid analysis of an airfoil
        
        Forced or free transition
        
        Transitional separation bubbles
        
        Limited trailing edge separation
        
        Lift and drag predictions beyond stall
        
        Airfoil Design and redesign
        
        Surface Speed Distribution
        
        New geometric parameters
        
        Blendiing of airfoils
        
        Import of Airfoil Geometry
    - - Montgomery Extrapolation
        
        Assumes flow around an airfoil can be treated as potential flow near 0 and 180 degress
        
        At other AOAs, flow behaves approximately like for a stalled, thin plate
      - Viterna Corrigan post stall model
        
        Idealized model
        
        Approximatetly constant power after stall
        
        Depends on the aspect ratio
    - - Basics
        
        Method of Operation
        
        Double-Multiple Streamtube Model
        
        Velocities
        
        Inflow Velocity
        
        Upwind Induced Velocity
        
        Equilibrium Velocity
        
        Downwind induced Velocity
        
        Wake velocity
        
        Determines the interference factors for energy extraction in the up and downstream rotor half
        
        Iteration Procedure
        
        Variable
        
        Interference factor
        
        Rotor Simulation
        
        Range of tip speed rations
        
        Turbine Simulation
        
        Range of wind speeds
      - Blade Design and Optimization
        
        Optimization
        
        Straight
        
        Helical
        
        Troposkien
        
        Sandia
        
        Scaling
        
        Height
        
        Height Shift
        
        Chord
        
        Radius
        
        Twist
      - Rotor Simulation
        
        Over a range of tip speed ratios
        
        Select the desired corrections to algorithm
        
        Dimensionless
        
        No Power Curves or Load Curves computed
      - Turbine Definition and simulation
        
        Parameters that define a turbine
        
        Rotor blade
        
        Cut in and out windspeeds
        
        Turbine Offset
        
        Fixed and Variable Losses
      - Simulation Settings
        
        Parameters
        
        Density
        
        Viscosity
        
        Blade Elements Number
        
        Max Number of iterations
        
        Maximum Epsilon for Convergence
        
        Relaxation Factor
        
        Wind Profile
        
        Constant
        
        Power Law
        
        Logarithmic
        
        Corrections
        
        Tiploss factor
    - - Nonlinear Lifting Line Free Vortex Wake
        
        Nonlinear
        
        Circulation
        
        Computed for the bound vortices on the lifting line
        
        Obtained from nonlinear lift and drag polars
      - Simulation Output Variables
        
        Global rotor
        
        Local blade
      - Simulation Parameters
        
        Blade Discretization
        
        Wind Input Data
        
        Operational Point
        
        Length of Simulation
        
        Time Discretization
        
        Modeling Parameters