# Shared Flashcard Set

## Details

Fluid Mechanics
Final
70
Engineering
12/12/2012

Term
 What are the 3 types of similitude
Definition
 1. Dynamic2. Kinetic3. Geometric
Term
 Properties involving heat flow
Definition
 1. Specific heat2. Specific internal energy3. Enthalpy
Term
 What causes a pressure change in a flowing fluid
Definition
 1. Depth/elevation2. Head loss3. Acceleration4. Viscous resistance5. Size of flow path
Term
 Who are the 2 people who made the greatest contribution to the fundamental principles of fluid mechanics
Definition
 1. Euler2. Bernoulli
Term
 The 6 ways flow patterns can be classified
Definition
Term
 What forces do fluid exert on surfaces they are in contact with
Definition
 1. Shearing Forces2. Normal Forces
Term
 The 3 types of methods to develop flow patterns
Definition
 1. Numerical 2. Analytical3. Experimental
Term
 Pipes in parallel have the same ________, but different _______
Definition
 1. Same head losses2. Different flow rates
Term
 What is the normal force for a fluid at rest
Definition
 Pressure
Term
 Devices to measure change in pressure
Definition
 1. Manometer2. Bourden gauge3. Strain gauge 4. Stagnation tube
Term
 What are the dimensions of Force
Definition
 [F] = ML/(T^2)
Term
 What are the dimensions of Velocity
Definition
 [V] =L/T
Term
 What are the dimensions of Density
Definition
 [Density] = M/(L^3)
Term
 What are the dimensions of Viscosity
Definition
 [Viscosity] = M/(LT)
Term
 What are the dimensions of Diameter
Definition
 [D] = L
Term
 What are the dimensions of Surface Tension
Definition
 [ST] = M/(T^2)
Term
 Kinetic energy correction factor for turbulent and laminar flow
Definition
 Laminar = 2Turbulent = 1.05
Term
 Pipes in series have the same ________ but different ________
Definition
 1. The same Flow Rates2. Different head losses
Term
 What are the chemicals added to fluids to reduce head loss called
Definition
 Drag reducers
Term
 In a flow system, what is flow work usually a result of
Definition
 1. Pressure2. Stress
Term
 What is the concept used in hydraulic lift and hydraulic press
Definition
 Pascal's Law
Term
 What are full scale structures used for experimental tests
Definition
 Prototype
Term
 What are small scale structures used for design
Definition
 Model
Term
 How does temperature effect gas viscosity
Definition
 The viscosity of gas increases with increasing temperature
Term
 What are some applications of Fluid Mechanics
Definition
 1. Kitchen faucets2. Hydroelectric3. Thermal Power4. Car suspension5. Road shocks6. Manufacturing7. Waste disposal8. Blood circulation
Term
 What are the limits of dimensional analysis
Definition
 1. Inclusion of variables already accounted for2. Omission of significant variables
Term
 What is velocity distribution in a pipe directly linked to
Definition
 Shear stress distribution
Term
 How is the pressure drop in a model related to pressure drop in a prototype
Definition
 They are related by the pressure coefficient
Term
 The 2 categories that Fluid Mechanics can be divided into
Definition
 1. Hydrodynamics2. Gas dynamics
Term
 What can a fluid be
Definition
 It can be a liquid or a gas
Term
 What are the common dimensionless numbers
Definition
 1. Euler' number2. Reynold's number3. Mach number4. Weber number5. Froude number
Term
 What is the object of dimensional analysis
Definition
 To reduce the number of separate variables involved in a problem to a smaller number of independent dimensionless groups of variables
Term
 What does gas dynamics deal with
Definition
 It deals with fluids that undergo significant density changes
Term
 What does ABET stand for
Definition
 Accreditation Board for Engineering Technology
Term
 What are the fundamental SI units
Definition
 1. Meter2. Kilogram3. Second4. Kelvin
Term
 What are the fundamental US units
Definition
 1. Foot2. Slug3. Second4. Ranking
Term
 What utilizes the change in pressure with elevation to evaluate pressure
Definition
 Manometer
Term
 2 roles of pressure in engineering
Definition
 1. Designing a building2. Designing a fluid pump
Term
 What type of magnitude does a static fluid exhibit
Definition
 The pressure at any point in a static fluid will have the same magnitude
Term
 What can momentum be divided into
Definition
 1. Accumulation2. Flow
Term
 3 assumptions made for the derivation of Bernoulli's equation from Euler's equation
Definition
Term
 One common dimensionless number used frequently in fluid-flow studies
Definition
 Reynold's number
Term
 What 2 things is shaft work usually a result of in the flow system
Definition
 Shaft work is usually the result of a pump or turbine in the flow system
Term
 What types of problems is the momentum equation used to analyze
Definition
 The momentum equation is used to analyze problems involving forces and flow
Term
 What is the momentum accumulation for non-steady flow
Definition
 greater than zero
Term
 What is the buoyancy force dependent on regarding a displaced fluid
Definition
 Buoyancy force is dependent on the density of the displaced fluid
Term
 How does the hydrostatic pressure vary with depth in an incompressible fluid
Definition
 it varies linearly with depth
Term
 Does stress in a Newtonian fluid depend on fluid viscosity
Definition
 Yes
Term
 What is the pressure in a vacuum called
Definition
 The absolute pressure
Term
 How will a hydrometer change as the specific gravity of the liquid increases
Definition
 It will float higher
Term
 Classify the following according to whether they are intensive or extensive:1. Specific weight2. Density3. Surface tension4. Vapor pressure5. Weight6. Velocity7. Specific gravity8. Momentum9. Force10. Specific heat
Definition
 1. Specific weight (I)2. Density (I)3. Surface tension (I)4. Vapor pressure (I)5. Weight (E)6. Velocity (I)7. Specific gravity (I)8. Momentum (E)9. Force (E)10. Specific heat (I)
Term
 Where are energy grade lines in relation to hydraulic lines
Definition
 The energy grade lines (EGL) are either greater than or equal to the hydraulic grade lines (HGL)
Term
 What are the body forces
Definition
 1. Gravitational2. Electrostatic3. Magnetic
Term
 What are the surface forces
Definition
 1. Structural elements(weight)2. Pressure elements3. Shear stress
Term
 When is momentum accumulation zero
Definition
 When the flow is steady and other materials in the control volume are stationary
Term
 4 Common applications of the momentum equation
Definition
 1. Fluid jets2. Nozzles3. Vanes4. Pipes
Term
 What does the energy equation allow to be incorporated
Definition
 The energy equation allows the incorporation of thermal energies (thermal forces) on a fluid
Term
 What is Q if heat is transferred to the system
Definition
 Q is positive
Term
 What is W if work is done by the system
Definition
 W is negative
Term
 What are the different forms of energy
Definition
 1. Kinetic2. Potential3. Internal
Term
 What can work be divided into
Definition
 1. Shaft work2. Flow work
Term
Definition
 It is the irreversible conversion of mechanical energy to thermal energy through the viscous action of the fluid
Term
 What is Similitude
Definition
 It is the theory and art of predicting prototype performance from model observations
Term
 What are the 3 basic dimensions in dimensional analysis
Definition
 1. Mass [M]2. Length [L]3. Time [T]All other dimensions are derived dimensions
Term
 What is the basic and obvious requirement of similitude
Definition
 It requires that the model be an exact geometric replica of the prototype
Term
 Where is the maximum velocity located in a pipe for laminar flow
Definition
 The center due to its parabolic velocity distribution
Term
 Who was the first person to develop the basic laws of turbulent flow
Definition
 Osborne Reynolds
Term
 What chart is the friction factor 'f' obtained from
Definition
 The Moody Diagram
Term
 Is there an exact solution or equation for turbulent flow
Definition
 No, there is no exact solution or equation for turbulent flow
Term
 What kind of chart is provided by the manufacturer for a pump
Definition
 A head vs. discharge (Q) is usually provided for a pump
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