isentropic
Học thuậtThân thiện
Definition
- Adjective:
- Having constant entropy; occurring without change in entropy: In thermodynamics, "isentropic" describes a process or condition where the entropy of a system remains unchanged. It is a key concept in analyzing idealized, reversible adiabatic processes.
Usage Examples
- Adjective:
- The compression in this theoretical model is assumed to be an isentropic process.
- For an isentropic flow, the stagnation temperature remains constant.
- Engineers often use isentropic efficiency to compare the performance of real turbines to ideal ones.
Advanced Usage
- "Isentropic surface": In meteorology and fluid dynamics, a surface on which entropy (or potential temperature) is constant.
- The air parcel moved along an isentropic surface.
- "Isentropic exponent": A ratio of specific heats used in equations for isentropic processes in gases.
- The isentropic exponent (k) is crucial for calculating the speed of sound in a gas.
Variants and Related Words
- Isentrope (noun): A line on a diagram connecting points of equal entropy; an isentropic line or curve.
- The process is represented by an isentrope on the chart.
- Isentropically (adverb): In an isentropic manner.
- The fluid is assumed to expand isentropically through the nozzle.
Synonyms
- Constant-entropy: Having entropy that does not change.
- Reversible adiabatic: (In ideal thermodynamics) A process that is both adiabatic (no heat transfer) and reversible, resulting in constant entropy.
Related Phrases and Concepts
- Isentropic process: A thermodynamic process during which the entropy of the system remains constant.
- Analyzing an isentropic process simplifies the calculations for ideal compressors.
- Isentropic efficiency: A measure of the performance of a real device (like a turbine or compressor) compared to an ideal isentropic device.
- The isentropic efficiency of the compressor was calculated to be 85%.
Adjective
- with unchanging entropy; at constant entropy