Our comments on paper "Is Condensation-Induced Atmospheric Dynamics a New
Theory of the Origin of the Winds?" by A. Jaramillo, O. J. Mesa, and D. J.
Raymond published in J. Atmos. Sci. 75, 3305 (2018).Comment: 12 pages, 1 figur

Makarieva, Anastassia M.

Gorshkov, Victor G.

Nobre, Antonio Donato

Nefiodov, Andrei V.

Sheil, Douglas

Nobre, Paulo

Li, Bai-Lian

English

arXiv



Ultraviolet&nbsp;(UV)&nbsp;emissions radiated by hydroxyl (OH) is one of the fundamental elements in the prediction of&nbsp;radiation&nbsp;signature of high-altitude and high-speed vehicle. In this work, the OHA2&Sigma;+&rarr;X2&Pi;&nbsp;ultraviolet emission band behind the bow shock is computed under the experimental condition of the second bow-shock ultraviolet flight (BSUV-2). Four related key issues are discussed, namely, the source of hydrogen element in the high-altitude atmosphere, the&nbsp;formation&nbsp;mechanism of OH species, efficient computational algorithm of trace species in rarefied flows, and accurate calculation of OH&nbsp;emission spectra.&nbsp;Firstly, by analyzing the typical atmospheric&nbsp;model,&nbsp;the vertical distributions of the&nbsp;number densities&nbsp;of different species containing hydrogen element are given. According to the different dominating species containing hydrogen element, the atmosphere is divided into three zones, and theformation&nbsp;mechanism of OH species is analyzed in the different zones. The direct simulationMonte Carlo&nbsp;(DSMC) method and the&nbsp;Navier-Stokes equations&nbsp;are employed to compute thenumber densities&nbsp;of the different OH electronically and vibrationally&nbsp;excited states.&nbsp;Different to the previous work, the trace species separation (TSS) algorithm is applied twice in order to accurately calculate the densities of OH species and its&nbsp;excited states.&nbsp;Using a non-equilibriumradiation&nbsp;model,&nbsp;the OH ultraviolet&nbsp;emission spectra&nbsp;and intensity at different altitudes are computed, and good agreement is obtained with the flight measured data

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Zhang YH(张羽淮)

Wan T(万田)

Jiang JZ(蒋建政)

Fan J(樊菁)

Institute Of Mechanics,Chinese Academy of Sciences

Key issues of ultraviolet radiation of OH at high altitudes

Yuhuai Zhang

Tian Wan

Jianzheng Jiang

Jing Fan

Crossref

http://dspace.imech.ac.cn/bitstream/311007/49473/1/Key%20issues%20of%20ultraviolet%20radiation%20of%20OH%20at%20high%20altitudes.pdf

Comments on "Is condensation-induced atmospheric dynamics a new theory
  of the origin of the winds?" by Jaramillo et al. (2018)

Comments on "Is condensation-induced atmospheric dynamics a new theory of the origin of the winds?" by Jaramillo et al. (2018)

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Institute Of Mechanics,Chinese Academy of Sciences

Crossref