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Thermals Exam 2
| Question | Answer |
|---|---|
| Fluid | liquid or gas |
| Fluid Statics | Study of stationary fluid |
| Fluid Dynamics | Study of Moving fluids |
| U tube manometer | Device that measures pressure based on the relationship between pressure and depth |
| Surface Force | act only on a surface of a control volume |
| Body force | act on all particles throughout the volume |
| Incompressible | Constant Density |
| psig | British Units Gauge Pressure |
| psia | British Units Absolute Pressure |
| kPa | SI units for Pressure |
| Specific Gravity | Ratio of the density of a liquid to the density of water at 4 degrees Celsius (1000 kg/m^3) |
| Immiscible | Dosent mix with water |
| In multiple fluids, the pressure will be the same at two points of equal depth if... | ...the points can be connected by an imaginary line that lies entirely within a single fluid. |
| Buoyancy Force | Equal to the weight of the fluid displaced by the object |
| Closed System | No mass flow in or out |
| Open System | Mass flows across the system boundary |
| Steady State | Total mass remains the same over time |
| inviscid | zero viscosity |
| streamline | path that a fluid takes as it accelerates through the nozzle (tangent to the velocity vector) |
| Streamtube | Control volume that is finite in length but infinitesimally thin in the dimension perpendicular to the streamline |
| specific | quantity per unit mass |
| isobar | line on constant pressure on a graph |
| saturated vapor | The vapor is at the point where if any energy is removed some of the vapor will turn into a liquid |
| superheated vapor | when energy is added to a saturated vapor |
| two phase mixture | mixture of liquid and gas |
| saturated liquid | addition of energy vaporizes some of the liquid |
| subcooled liquid | removal of energy from the liquid |
| saturation temperature | the temp at which the saturated vapor, subcooled liquid and saturated liquid exist |
| saturated vapor line | line at which vapor begins to condense |
| saturated liquid line | line at which liquid begins to boil |
| liquid vapor dome | region enclosed by the saturated liquid and vapor lines |
| Quality | mass fraction of vapor present in a two phase mixture |
| State principle | Two independent thermodynamic properties are needed to completely specify the state of a pure substance |
Created by:
EllieCohen
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