Fluid Mechanics and Heat Transfer Quiz
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Questions and Answers

What is the primary focus of transport phenomena?

  • Mass transfer only
  • Heat transfer only
  • Transport or movement of a given property by molecular movement (correct)
  • Momentum transfer only

    • Which of the following is not a transported property in transport phenomena?

  • Thermal energy
  • Mass
  • Momentum
  • Electricity (correct)

    • Where can one find publications related to transport phenomena?

  • Online journals
  • Bookstores
  • Libraries and as e-Books (correct)
  • Research institutions

    • Which author wrote 'Heat Transfer: A Practical Approach'?

    <p>Y.A. Çengel</p> Signup and view all the answers

    What is the title of the book written by J.M. Coulson, J.F. Richardson, J.R. Backhurst, and J.H. Harker?

    <p>Chemical Engineering</p> Signup and view all the answers

    How many edition of 'Heat Transfer' is written by J.P. Holman?

    <p>10th</p> Signup and view all the answers

    What is the value of the error function at λ = 0?

    <p>0</p> Signup and view all the answers

    What is the complementary error function?

    <p>1 - erf(λ)</p> Signup and view all the answers

    What is the relationship between the error function and λ?

    <p>erf(-λ) = -erf(λ)</p> Signup and view all the answers

    What is the thermal penetration thickness δT?

    <p>The distance x for which the temperature dropped to a value of 0.01(Ts - Ti)</p> Signup and view all the answers

    When does the error function reach a value of 0.99?

    <p>When λ is about 2</p> Signup and view all the answers

    What is the condition for using the semi-infinite solid solution?

    <p>When δT is small with respect to the plate thickness L</p> Signup and view all the answers

    What type of flow is characterized by the entrance region?

    <p>Laminar</p> Signup and view all the answers

    What is the primary application of the equations of change in the context of fluid flow?

    <p>Laminar and turbulent flow</p> Signup and view all the answers

    What type of heat transfer is characterized by a constant wall temperature?

    <p>Heat flux</p> Signup and view all the answers

    What is a common application of the equation of thermal energy?

    <p>Heat exchangers</p> Signup and view all the answers

    What type of flow is characterized by a boundary layer?

    <p>Boundary layer</p> Signup and view all the answers

    What is a common application of convection heat transfer?

    <p>Heat exchangers</p> Signup and view all the answers

    What is internal energy associated with in a substance?

    <p>molecular motion, chemical energy, surface energy, and energy stored in an electric condenser or battery</p> Signup and view all the answers

    What is the effect of an increase in internal energy in a substance?

    <p>an increase in temperature</p> Signup and view all the answers

    What is the equation for the change in internal energy in a closed system?

    <p>Q - W = U2 - U1</p> Signup and view all the answers

    What is true about isolated systems?

    <p>Q = 0, W = 0</p> Signup and view all the answers

    What is the equation for the energy balance in a reversible process?

    <p>δQ - δW = dU</p> Signup and view all the answers

    What is the equation for the enthalpy change in a reversible, constant pressure process?

    <p>Q = ΔH</p> Signup and view all the answers

    What is assumed to be constant across the boundary layer?

    <p>Pressure across the boundary layer</p> Signup and view all the answers

    Which of the following is NOT a boundary condition for the temperature profile?

    <p>vx = v∞ at y = ∞</p> Signup and view all the answers

    What is the main assumption for neglecting vy terms in the Navier-Stokes equation y-component?

    <p>vy is much smaller than vx</p> Signup and view all the answers

    What is the simplification used for the boundary layer equation of motion x-component?

    <p>∂2vx/∂x2 is negligible</p> Signup and view all the answers

    Who developed an exact solution for the boundary layer momentum equation?

    <p>Blasius</p> Signup and view all the answers

    What is the purpose of the boundary layer assumption that the boundary layer is thin?

    <p>To show that ∂2vx/∂x2 is much smaller than ∂2vx/∂y2</p> Signup and view all the answers

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