Fluid Dynamics Parameters Quiz
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Questions and Answers

Which parameter signifies lower resistance and a decrease in pressure drop?

  • Equivalent particle diameter
  • Bed height
  • Bed porosity (correct)
  • Particle sphericity
  • What impact does particle sphericity have on flow resistance?

  • No impact on flow resistance
  • Causes turbulence in flow
  • Increases flow resistance
  • Decreases flow resistance (correct)
  • Which factor generally creates more flow resistance in filtration?

  • Bed height
  • Equivalent particle diameter (correct)
  • Superficial velocity
  • Fluid viscosity
  • What does bed tortuosity account for in filtration systems?

    <p>Complex, winding paths fluids take through the bed</p> Signup and view all the answers

    What limitation exists due to the idealized capillary tube model in packed beds?

    <p>Variations in pore size and shape</p> Signup and view all the answers

    Which type of filtration mechanism involves straining and impingement?

    <p>Surface / Screen filtration</p> Signup and view all the answers

    Which parameter in the Kozeny-Carman equation quantifies the pressure drop experienced by a fluid flowing through a packed bed of solid particles?

    <p>Fluid viscosity (μ)</p> Signup and view all the answers

    What effect does increasing fluid viscosity have on the pressure drop in the context of the Kozeny-Carman equation?

    <p>Increases pressure drop</p> Signup and view all the answers

    In the context of the Kozeny-Carman equation, what impact does a longer bed height have on the pressure drop experienced by a fluid?

    <p>Increases pressure drop</p> Signup and view all the answers

    Which parameter in the Kozeny-Carman equation is affected by higher flow rates necessitating a greater pressure drop to overcome resistance?

    <p>Superficial velocity (Vo)</p> Signup and view all the answers

    What characteristic of fluids offers more resistance, leading to a higher pressure drop as per the Kozeny-Carman equation?

    <p><strong>Higher viscosity</strong></p> Signup and view all the answers

    When considering the Kozeny-Carman equation, which parameter captures the interplay between key factors such as bed height and superficial velocity?

    <p><strong>Bed porosity</strong></p> Signup and view all the answers

    Why is the mechanical strength of filter medium higher in depth filtration compared to surface filtration?

    <p>Due to the smaller particle size retained in depth filtration</p> Signup and view all the answers

    How does the cost of equipment differ between surface and depth filtration systems?

    <p>Depth filtration equipment is cheaper and does not require ancillary equipment</p> Signup and view all the answers

    Which type of filtration is primarily used for separating solid particles larger than one micron in wastewater treatment?

    <p>Particle Filtration</p> Signup and view all the answers

    What distinguishes centrifugal filtration from other types of filtration systems mentioned in the text?

    <p>It applies significant centrifugal force exceeding gravity to propel fluid through a filter medium</p> Signup and view all the answers

    How do membrane filters differ from other filtration systems in terms of what they remove?

    <p>Membrane filters remove dissolved solids and small organic particles from wastewater</p> Signup and view all the answers

    Why does the Kozeny-Carman Equation play a significant role in depth filtration systems?

    <p>It helps calculate the superficial velocity of the fluid through the filter medium</p> Signup and view all the answers

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