the thermodynamic property of a system that changes by an amount equal to the work done on the systemwhen it suffers an adiabatic change. It is the sum of the kinetic and potential energies of its constituent atoms, molecules, etc
Symbol: U, E
internal energy in American English
noun
Thermodynamics
a function of thermodynamic variables, as temperature, that represents the internal state of a system that is due to the energies of the molecular constituents of the system. The change in internal energy during a process is equalto the net heat entering the system minus the net work done by the system
Symbol: U
Word origin
[1885–90]This word is first recorded in the period 1885–90. Other words that entered Englishat around the same time include: booster, lineup, reactor, roller coaster, toner
Examples of 'internal energy' in a sentence
internal energy
Density and internal energy are chosen as independent variables to avoid variable transformations and iterations.
Hrubý Jan 2012, 'A computationally efficient and accurate numerical representation of thermodynamicproperties of steam and water for computations of non-equilibrium condensing steamflow in steam turbines', EPJ Web of Conferenceshttp://dx.doi.org/10.1051/epjconf/20122501025. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We also calculate the entropy and the internal energy of the pair in these theories.
Carlo Ewerz, Olaf Kaczmarek, Andreas Samberg 2018, 'Free energy of a heavy quark-antiquark pair in a thermal medium from AdS/CFT', Journal of High Energy Physicshttp://link.springer.com/article/10.1007/JHEP03(2018)088. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The coated cylinder exhibits a larger deformation and higher internal energy in the metallic material.
Y.W. Kwon, J.K. Bergersen, Y.S. Shin 1994, 'Effect of Surface Coatings on Cylinders Exposed to Underwater Shock', Shock and Vibrationhttp://dx.doi.org/10.3233/SAV-1994-1305. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The internal energy, heat capacity, angular pair correlation function and scalar order parameter are obtained.
Habtamu Zewdie 2000, 'A computer simulation of a potential derived from the gay-berne potential for latticemodel', Bulletin of the Chemical Society of Ethiopiahttp://www.ajol.info/index.php/bcse/article/view/72024. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Lignin-rich residues from the cellulose-based industry are traditionally incinerated for internal energy use.
José I. Santos, Raquel Martín-Sampedro, Úrsula Fillat, José M. Oliva, María J. Negro,Mercedes Ballesteros, María E. Eugenio, David Ibarra 2015, 'Evaluating Lignin-Rich Residues from Biochemical Ethanol Production of Wheat Strawand Olive Tree Pruning by FTIR and 2D-NMR', International Journal of Polymer Sciencehttp://dx.doi.org/10.1155/2015/314891. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The simulation results also show contact force due to the collision, deformation, stress and internal energy of the bumper beam.
Nugraha Aditya Sukma, Santoso Arif, Saputra Hendri Maja 2016, 'Crashworthiness Simulation of Front Bumper Model of MOROLIPI V2 During Head-on Collision',MATEC Web of Conferenceshttp://dx.doi.org/10.1051/matecconf/20164002024. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This reflects the fact that the internal energy of the ideal gas depends exclusively on its temperature.
J. M. Isidro, P. Fernández de Córdoba 2018, 'On the Contact Geometry and the Poisson Geometry of the Ideal Gas', Entropyhttp://www.mdpi.com/1099-4300/20/4/247. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Thermal conductivity, internal energy generation function, and heat transfer coefficient are assumed to be dependent on temperature.
Raseelo J. Moitsheki, Atish Rowjee 2011, 'Steady Heat Transfer through a Two-Dimensional Rectangular Straight Fin', Mathematical Problems in Engineeringhttp://dx.doi.org/10.1155/2011/826819. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)