On the total enthalpy behavior inside a shock wave

Shoev, G.V.; Timokhin, M.Y.; Bondar, Y.A.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 сентября 2021 г.

Авторы: Shoev Georgy V., Timokhin Maksim Yu, Bondar Yevgeniy A.
Журнал: Physics of Fluids
Том: 32
Номер: 4
Год издания: 2020
Издательство: AIP Publishing
Местоположение издательства: United States
Первая страница: 041703
DOI: 10.1063/5.0005741
Аннотация: The total enthalpy behavior inside a shock wave in a dilute monatomic gas has been numerically studied for various values of Mach and Prandtl numbers with the continuum (the Navier-Stokes-Fourier equations) and the kinetic (the Shakhov model and the Direct Simulation Monte Carlo method) approaches. A significant difference between the results by the continuum and the kinetic approaches has been observed for the internal shock wave structure. In a wide range of the free-stream Mach numbers the continuum approach predicts qualitatively similar behavior of total enthalpy distributions that can be of a concave, constant or convex shape depending on the Prandtl number. The more sophisticated kinetic approach predicts a more complicated form of total enthalpy profiles: e.g. an inflection point for Mach numbers around two and Prandtl numbers close to unity. The evolution of the total enthalpy in the shock is determined by balance of heat conduction and mechanical work of normal viscous stress-processes which are predicted inaccurately by the Navier-Stokes-Fourier equations at high Mach numbers.
Добавил в систему: Тимохин Максим Юрьевич

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On the total enthalpy behavior inside a shock waveстатья

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