ME 303 FALL 2000 WSU

FINAL EXAM STUDY GUIDE

BRIEF COURSE TOPIC OUTLINE

• dimensions and units
• fluid properties
• hydrostatics
  • pressure variation in non-flowing fluids; e.g. reservoirs and the "standard atmosphere"
  • pressure variation in stagnant fluid with constant density: equation of hydrostatics
  • resultant force (magnitude and line of action) arising from pressure on submerged surfaces
  • bouyancy and floatation - Archimedes' principles
  • stability of floating and submerged bodies
• ideal (frictionless) flow on a streamline: Bernoulli's equation (aka Field, Euler, "s" equation); (Euler's) "n" equation
• conservation laws, rate-of-creation bookeeping, and use of control volume analysis
• conservation of MASS
• conservation of MOMENTUM (a vector!); "force checklist" ; concept of THRUST associated with a fluid jet
• conservation of ENERGY; especially "hydraulic" form (with head losses)
• dimensional analysis
  • Buckingham theorem, finding "pi" groups
  • frequently encounted "pi" groups - e.g. Reynolds, Froude, Weber, Mach
  • dimensional homogeneity, similitude & model testing
• internal (pipe) flow
  • pipe flow: laminar/turbulent flow; influence of roughness and Reynolds number; hydraulic diameter
  • calculation of pipe friction losses using Darcy-Weisbach law with friction factor from Moody chart
  • uniform flow in an open channel: Manning equation
  • losses in components ("minor" losses); K_L (loss factor) and L_equiv (equivalent length method)
  • piping systems; incorporation of pump, fan, and/or turbine in flow systems; pump (fan)/turbine efficiency
  • pumps: pump head vs. flow (pump curve) vs system curve; pump NPSHA, pump selection
• external flows
  • boundary layer growth and skin friction drag C_f for flow over a thin flat plate; use of flat plate drag
  • drag - frictional & form; terminal velocity, drag coefficent C_D
  • lift - airfoil, wing, lift coefficient C_L, angle-of-attack... drag caused by lift (induced drag)
  • principles of flight: lift=weight, drag=thrust; stability and control of flight; wing design

Tips for the ME 303 Final Exam: