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Created by Inika Gadgil
about 10 years ago
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Key termsIncompressible- Fluid has constant densityViscosity- Internal friction in fluidLaminar Flow- Layers of fluid slide past each other & steady state pattern. for lower fluid velocitiesTurbulent Flow- Irregluar, complex flow with turbulence. No steady state. Occurs at high velocities or where objects in produce large changes in velocity
Continuity For an incompressible fluid Volume Flow Rate (Q) - how much fluid flowing across some surface in a given time. - A1v1=A2v2 also expressed as Q=Av in m3s-1The continuity equation states volume flow rate is same at all sections in fluid PROVIDED is incompressible. THEREFORE when fluid passes through a restriction it speeds up.
Bernoulli's Equation - IDEA that reduction in pressure, makes velocity increase- Energy Conservation-Assume Laminar, steady, incompressible (viscosity ignored)P= absolute pressure. Energy per unit volume - constant at every point in fluid If no change in H, you can cancel out pgh from both sides
Applying Bernoulli's Law-Note cross-section, height or pressure CHANGE-At points where interested write down 1) continuity equation and 2)Bernoulli's equation. BOTH will have constant value throughout fluid
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