V03_Fluid Mechanics and Bernoulli Equation Quiz
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Questions and Answers

What property of a fluid does the Bernoulli Equation relate to?

  • Velocity and pressure (correct)
  • Volume and weight
  • Density and viscosity
  • Pressure and temperature
  • How does severe arterial stenosis affect blood flow according to the text?

  • It increases blood flow through the stenosis.
  • It allows normal blood flow despite high pressure.
  • It prevents sufficient blood flow due to high pressure. (correct)
  • It reduces pressure drop over the stenosis.
  • What phenomenon does the Reynolds Number help predict in fluid mechanics?

  • Turbulent flow (correct)
  • Viscosity of the fluid
  • Pressure distribution in a fluid
  • Density changes in the fluid
  • Why does an increase in fluid velocity result in a decrease in pressure, according to the Bernoulli Equation?

    <p>To conserve energy within the fluid.</p> Signup and view all the answers

    How does the Venturi Effect explain pressure changes in a constricted pipe?

    <p>Pressure decreases as fluid velocity increases due to conservation of momentum.</p> Signup and view all the answers

    According to the Bernoulli equation, what happens to the pressure when the flow velocity increases?

    <p>The pressure decreases</p> Signup and view all the answers

    What phenomenon is observed in a Venturi tube, which is based on the Bernoulli principle?

    <p>The flow velocity increases as the cross-sectional area decreases, causing a pressure drop</p> Signup and view all the answers

    In the context of microfluidic systems, which application of the Bernoulli principle is discussed?

    <p>Arterial stenosis (narrowing of arteries)</p> Signup and view all the answers

    Who is credited with formulating the theoretical basis for the Bernoulli equation?

    <p>Daniel Bernoulli</p> Signup and view all the answers

    What is the primary factor that causes the aerodynamic lift on an aircraft wing, according to the Bernoulli principle?

    <p>The difference in air pressure between the upper and lower surfaces of the wing</p> Signup and view all the answers

    What is the relationship between flow velocity and pressure, as described by the Bernoulli equation, assuming other factors remain constant?

    <p>Flow velocity and pressure are inversely proportional</p> Signup and view all the answers

    What condition must be satisfied for the Bernoulli equation to be valid?

    <p>The flow must be steady, incompressible, and inviscid.</p> Signup and view all the answers

    What principle is responsible for the phenomenon of aerodynamic lift?

    <p>The Bernoulli principle</p> Signup and view all the answers

    In the context of microfluidic systems, what does the term 'laminar flow' refer to?

    <p>Flow with a low Reynolds number and smooth, parallel streamlines</p> Signup and view all the answers

    According to the Bernoulli equation, what happens to the pressure when the velocity of a fluid increases?

    <p>The pressure varies inversely with the square of the velocity.</p> Signup and view all the answers

    Who is credited with the formulation of the Bernoulli equation?

    <p>Daniel Bernoulli</p> Signup and view all the answers

    What is the Venturi effect, and how is it related to the Bernoulli equation?

    <p>The Venturi effect describes the decrease in pressure as a fluid flows through a constriction, and it is a direct consequence of the Bernoulli equation.</p> Signup and view all the answers

    Study Notes

    Fluid Mechanics

    • At severe arterial stenosis, the pressure drop is too high, resulting in not enough blood flowing through.
    • Mild stenosis: pressure drop is moderate.
    • Severe stenosis: pressure drop is very high.

    Bernoulli Equation

    • The equation relates the pressure of a fluid to its velocity: v² + p/ρ = const.
    • Applies to steady-state and laminar flow.
    • States that the sum of the kinetic energy and potential energy of a fluid is constant.

    Aerodynamic Lift

    • The shape of an airfoil is designed such that the air velocity above is faster than the velocity below.
    • This results in less pressure above than below the airfoil, creating a lift (force).

    Reynolds Number (Re)

    • Developed by Osborne Reynolds (1842-1912).
    • Measures the nature of fluid flow (laminar or turbulent).

    Venturi Effect

    • High flow velocity corresponds to low pressure, and high pressure corresponds to low flow velocity.
    • Experimentally demonstrated by Giovanni Battista Venturi (1746-1822).

    Euler Equation

    • A mathematical equation describing fluid flow in the absence of friction (laminar flow).
    • Relates the velocity of a fluid to its pressure and density.

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    Related Documents

    V03 Fluid Mechanics I WS 23 PDF

    Description

    Test your knowledge on fluid mechanics, specifically focusing on the Bernoulli equation, Euler equation, Venturi effect, and microfluidic systems. Explore concepts related to steady-state, laminar flow, flow velocity, and pressure in this quiz.

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