RADIS: A nonequilibrium line-by-line radiative code for CO2 and HITRAN-like database species

Pannier, Erwan; Laux, Christophe O.

doi:10.1016/j.jqsrt.2018.09.027

Cited by 40 publications

(23 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The line-byline nature and consistency between the HITRAN and HITEMP databases mean that they are extremely flexible when modeling a variety of environments. The HITRAN and HITEMP parameters undergo rigorous validations against observations (Olsen et al 2019;Hargreaves et al 2019) and are regularly used in radiative transfer codes such as LBLRTM (Clough et al 2005), NEMESIS (Irwin et al 2008), the Reference Forward Model (Dudhia 2017), RADIS (Pannier & Laux 2019) and the Planetary Spectrum Generator (Villanueva et al 2018).…”

Section: The Hitran and Hitemp Databasesmentioning

confidence: 99%

An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database

Hargreaves¹,

Gordon²,

Rey

et al. 2020

ApJS

136

102

View full text Add to dashboard Cite

A methane line list for the HITEMP spectroscopic database, covering 0-13,400 cm −1 (>746 nm), is presented. To create this compilation, ab initio line lists of 12 CH 4 from Rey et al. (2017) ApJ, 847, 105 (provided at separate temperatures in the TheoReTS information system), are now combined with HITRAN2016 methane data to produce a single line list suitable for high-temperature line-byline calculations up to 2000 K. An effective-temperature interpolation model was created in order to represent continuum-like features at any temperature of interest. This model is advantageous to previously-used approaches that employ so-called "super-lines", which are suitable only at a given temperature and require separate line lists for different temperatures. The resultant HITEMP line list contains ∼32 million lines and is significantly more flexible than alternative line lists of methane, while accuracy required for astrophysical or combustion applications is retained. Comparisons against experimental observations of methane absorption at high temperatures have been used to demonstrate the accuracy of the new work. The line list includes both strong lines and quasi-continuum features and is provided in the common user-friendly HITRAN/HITEMP format, making it the most practical methane line list for radiative transfer modeling at high-temperature conditions.

show abstract

Section: The Hitran and Hitemp Databasesmentioning

confidence: 99%

An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database

Hargreaves¹,

Gordon²,

Rey

et al. 2020

ApJS

136

102

View full text Add to dashboard Cite

show abstract

“…The RADIS [9,10] nonequilibrium spectral code was used to reanalyze the free-flow radiation measured in the expansion-tube experiment of Ref. [6].…”

Section: Resultsmentioning

confidence: 99%

“…In this work, the CDSD-4000 line database [15] is used to model CO 2 radiation at high temperature (T > 2200 K), and the HITEMP-2010 database [16] for CO radiation or CO 2 radiation at lower temperature (T ≤ 2200 K). A sensitivity analysis [10] showed that HITEMP-2010 and CDSD-4000 give similar results at T ≤ 2200 K for the 4.2µm CO 2 band. The rovibrational energies of CO are calculated with a coupled rotating vibrator model.…”

Section: Spectral Codementioning

confidence: 94%

“…The radiation of CO 2 and CO radiation is modeled using RADIS [9,10], an open-source nonequilibrium infrared line-by-line code. In Ref.…”

Section: Spectral Codementioning

confidence: 99%

“…In Ref. [10], the RADIS solver was validated against infrared measurements from an equilibrium microwave torch [11], a low-pressure nonequilibrium laser discharge [12], an equilibrium RF plasma torch [13] and a NASA shock tube experiment [14]. RADIS takes HITRAN-like line databases as input, and either reads rovibrational energies from precomputed databases or calculates them from spectroscopic constants.…”

Section: Spectral Codementioning

confidence: 99%

See 2 more Smart Citations

Analysis of the JAXA Nonequilibrium Infrared Emission Spectra for Mars Entry Conditions

Pannier

Laux

2019

Journal of Thermophysics and Heat Transfer

Self Cite

View full text Add to dashboard Cite

Nonequilibrium infrared emission spectra representative of a Mars atmospheric entry mission are modeled using RADIS, a spectral code for CO and CO 2 based on the HITEMP-2010 and CDSD-4000 databases. The modeled experimental data for the free-flow and the forebody radiation were obtained in the JAXA expansion tube facility. In the expanding flow, good agreement with the experimental data can be obtained using a slightly nonequilibrium distribution and a homogeneous flow. The model suggests that all three CO 2 vibration modes share a * Ph.D student, CentraleSupélec,

show abstract

Flow field radiation characteristics extraction and analysis of the re-entry orbital test vehicle

Song,

Zhang,

Chen

et al. 2024

Aerospace Science and Technology

View full text Add to dashboard Cite

RADIS: A nonequilibrium line-by-line radiative code for CO2 and HITRAN-like database species

Cited by 40 publications

References 39 publications

An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database

An Accurate, Extensive, and Practical Line List of Methane for the HITEMP Database

Analysis of the JAXA Nonequilibrium Infrared Emission Spectra for Mars Entry Conditions

Flow field radiation characteristics extraction and analysis of the re-entry orbital test vehicle

Contact Info

Product

Resources

About