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)
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- 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
- Mass is conserved
- V1A1=V2A2
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- 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)