Help!
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| Stagnation pressure | The pressure at a point where the fluid is brought to a complete stop isentropically
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| Which principles does the venturi meter use? | Continuity and Bernoulli's eqs.
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| Mention four properties of ideal fluids | 1. Non viscous and incompressible
2. Slip condition is observed
3. Euler and Bernoulli's eqns are used
4. Simple equations are used
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| In which case is the Bernoulli's equation used? | It is used for steady, incompressible flow along a streamline in inviscid regions of flow.
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| What is a fluid? | Substance which deforms continually under shear stress of any magnitude.
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| Uniform flow | All parameters are equal at every point in the fluid. Positional
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| Non uniform | All flow parameters variate in magnitude and direction at various points in the flow field.
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| Steady | Flow parameters remain same as time passes
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| Non steady | Flow parameters change as time changes.
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| Steady uniform | Flow parameters same at every point in the flow and do not change as time passes
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| Steady non uniform | Flow parameters are different across the flow field but do not change with time
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| Non steady uniform | Flow parameters are the same access the flow but change with time but position wise is same
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| Non steady non uniform | Flow parameters variate due to position and due to time e.g. turbulent flow
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| Laminar flow | All particles proceed along smooth parallel lines without deviation. Velocity is in the direction of the flow.
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| Turbulent flow | Particles move in an irregular manner. Fluctuating velocity is superimposed on the mean velocity
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| Transitional flow | Variates between laminar and turbulent flows
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| Compressibility is due to what parameter? | It is due to variation of density in flow.
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| What us mach number? | Ratio of speed of medium to speed of sound
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| Streamline | Line whuch is everywhere tangent to the local velocity vector. Lines of constant stream function.
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| State the continuity equation | PUA=pua where P is density
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