Heat Transfer and Ionization in Non-Equilibrium Hypersonic Flow Past a Blunt Plate

Autor:	Sergey T. Surzhikov
Rok vydání:	2021
Předmět:	Fluid Flow and Transfer Processes Physics Air Ionization Range (particle radiation) Convective heat transfer Mechanical Engineering Ionization Volume fraction Heat transfer Degrees of freedom (physics and chemistry) General Physics and Astronomy Flux Molecular physics
Zdroj:	Fluid Dynamics. 56:870-885
ISSN:	1573-8507 0015-4628
Popis:	The processes of heat transfer and air ionization in gas flow in the neighborhood of blunt plates of bluntness radii Rn = 0.2 and 0.66 cm are simulated numerically over a wide free-stream-parameter range. The temperature fields of the translational and vibrational degrees of freedom of molecular components and the number densities of atomic and molecular components as well as the electron number densities in the neighborhood of the surface are constructed. The convective heat flux densities calculated are compared with the data predicted by the Fay–Riddel, Detra–Kemp–Riddel, and Fenster correlation relations. In the cases considered the volume fraction of ionized components is not greater than 1%. However, the regimes of strong and weak ionization are distinguished. In the present study the boundary between the two regimes is determined from the critical electron number density found for the radio-wave frequencies of 3.3–35 GHz used in the RAMC-2 flight experiment to measure the electron number densities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f1a9cf957046cf15163c4bda1c6d6ac0 https://doi.org/10.1134/s001546282106015x Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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