Primary Word |
Secondary Word |
Definition |
Tutorial Page Link |

degrees of freedom | The number of degrees of freedom in a system is equal to the number of intensive variables that can be independently specified. For closed, non-reacting systems, Gibbs Phase Rule can be used to calculate the number of Degrees of Freedom. Modified forms of the Gibbs Phase Rule must be used for open and reacting systems. | 3C4 | |

delta | 4A12 | ||

density | 1B1 | ||

desublimation | A process in which molecules in a gas phase move directly into a solid phase without passing through a liquid phase. A common example is the process whereby the ice cubes in your home freezer shrink over a long period of time. | 2B7 | |

diagram | PV | 4A9 - 11 | |

diagram | TS | 7B8 - 9 | |

diagram | TV | 2B4 | |

diatomic gases | A gas in which every molecule consists of only two identical atoms. For example: hydrogen, oxygen, nitrogen. | 2E5 | |

differential | exact | 4A7 - 8 , 12 | |

differential | inexact | 4A7 - 8 , 12 | |

differential manometer equation | 1D6 | ||

diffuser | A pipe fitting in which the diameter of the pipe increases. The result is that the velocity of the fluid decreases and the pressure of the fluid increases. | 5C6 , 7 | |

dimensional homogeneity | 1B9 - 11 | ||

dimensionless | A value of a dimensionless variable is a pure number. It has no units. | 1B1 | |

dimensions | 1B1 | ||

double interpolation | 2C20 , 21 | ||

duct | 5C6 |