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    Fluid Mechanics & Dynamics

    • Fluid – a material that deforms continuously and permanently under the application of a shearing stress
    • Important properties
      • Density (ρ)
      • Specific weight (γ)
      • Specific Gravity (SG)
      • Viscosity (μ)
    • Streamline
      • Lines tangent to the velocity vector throughout the flow field
    • Stagnation Point
      • Largest pressure obtainable along a streamline
      • Velocity is zero
    • Air as a fluid
      • When studying aerodynamics air is treated as a fluid
      • Follows all laws of motion and all laws of fluid mechanics
            • SF = mâ
            • Conservation of Energy
            • Conservation of Mass
    • Continuity equatio
        • Mass is conserved
        • V1A1=V2A2
    • Bernoulli equation
      • P1+1/2 ρV12 +γz1 = P2+1/2 ρV22 +γz2
      • Relationship between Pressure, Velocity, and Elevation
      • Based on conservation of linear momentum (Kinetic Energy)