Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Thermals Exam 1

RPI Thermals and Fluids Exam 1 Vocab

QuestionAnswer
Thermodynamics The science of the conversions between forms of energy and their relations to the macroscopic measurable quantities
Heat Transfer Transmission of thermal energy from a hotter object to a cooler object via conduction, convection, or radiation
Control Volume Arbitrary volume where mass and energy flow through
System A flexible, fixed or moving boundary that encloses the same particles at all times
Closed System Also called controlled mass system (no mass can cross boundary)
Open System Also called Control Volume (mass and energy can cross boundary)
Isolated System no mass or energy can cross boundary
First Law of Thermodynamics energy cannot be created or destroyed only transformed
Specific Heat The energy required to raise the temperature of a unit mass of substance by one degree
Ideal Solids and Liquids Does not change volume with temperature, cannot be compressed
Dimension Physical Quality
Units Magnitudes assigned to dimensions
Extensive Properties The value of an overall system is the sum of its values for the parts into which the system is divided
Intensive Properties Non additive properties
Property Macroscopic characteristic of a system to which a numerical value can be assigned without the knowledge of the history of the system
Fluid Mechanics The study of fluids at rest or in motion and the interactions between a solid and a fluid either flowing past or acting on the solid in some manner
Boundary or Control Surface Drawn around the system for the identification
Surroundings Everything outside the boundary
Process occurs when some property changes or energy flows
Unsteady/ Transient Properties of interest are different at start and finish
Steady Property does not vary with time only location
Schematic diagram Shows relationship and interactions
Assumption Used to simplify a problem
Conduction Caused by molecular vibrations
Convection Moving fluid flows past a solid of a different temp
Radiation Occurs in a vacuum, transfer via electromagnetic waves
Multimode Multiple types of heat transfer used in one system
Thermal Resistance Resistance to heat transfer
Hydro statics Fluids at rest
Fluid Dynamics Relative motion between fluid and solid
Fluid A substance that will deform is a shear force is applied
Temperature Measure of the average kinetic energy of the molecules
Polytropic Process Relationship between pressure and volume
Isobaric Process Constant Pressure
Isothermal Process Constant Temperature
Adiabatic Process No Heat Transfer
Continuum Assumption Characterize the material as if it were infinitely divisible and not composed of discrete molecules
Pressure The force of the combined motion of many molecules
Heat Energy in motion across the boundary of a system
Internal Energy Energy is stored in a system
Equilibrium A state in which there are no imbalances in forces, temps, pressures, phases or chemical composition
Quasi Equilibrium one that passes through states of equilibrium (very slow process)
Biot Number The ratio of conductive resistance to convective resistance
Fourier's Law of Conduction Heat flows from hot to cold based on thermal Conductivity
Black Surface Ideal Surface for radiation - one that absorbs all the radiation incident upon it
Gray Surface If a fraction of the incident radiation reflected by the surface is independent of the wavelength of the incident radiation
Diffuse Surface if the fraction of the incident radiation does not depend on the angle of incident
Resistance analogy Heat transfer rate is proportional to the temperature difference
Lumped System Approximation If two thermal resistances are being used and one is much larger than the other
Fourier Number Ratio of the rate at which heat is conducted through a body to the rate at which it is stored
Created by: EllieCohen
Popular Engineering sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards