MISTRAL: CONUS Debut Flow Field and Heat Transfer Calculations

Scott, Thomas E.; Dieudonne, W.; Spel, Martin

doi:10.2514/6.2004-2423

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Bekki et al. (2021) carried out computational fluid dynamics modeling for non‐equilibrium chemically reacting flows (Scott et al., 2004) and concluded that nitrogen oxides and chlorine are expected to be created upon reentry and long‐term ozone depletion is expected to be located over Antarctica at high altitudes. Bianchi et al.…”

Section: Introductionmentioning

confidence: 99%

“…In view of the aforementioned forecasts, several modeling studies have been carried out to estimate environmental impacts of spacecraft demise in the atmosphere. Bekki et al (2021) carried out computational fluid dynamics modeling for non-equilibrium chemically reacting flows (Scott et al, 2004) and concluded that nitrogen oxides and chlorine are expected to be created upon reentry and long-term ozone depletion is expected to be located over Antarctica at high altitudes. Bianchi et al (2021) used the Gibbs energy minimization procedure (Park et al, 2021) to estimate the non-equilibrium generation of aluminum and titanium oxides.…”

Section: Introductionmentioning

confidence: 99%

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Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations

Ferreira,

Huang,

Nomura

et al. 2024

Geophysical Research Letters

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Large constellations of small satellites will significantly increase the number of objects orbiting the Earth. Satellites burn up at the end of service life during reentry, generating aluminum oxides as the main byproduct. These are known catalysts for chlorine activation that depletes ozone in the stratosphere. We present the first atomic‐scale molecular dynamics simulation study to resolve the oxidation process of the satellite's aluminum structure during mesospheric reentry, and investigate the ozone depletion potential from aluminum oxides. We find that the demise of a typical 250‐kg satellite can generate around 30 kg of aluminum oxide nanoparticles, which may endure for decades in the atmosphere. Aluminum oxide compounds generated by the entire population of satellites reentering the atmosphere in 2022 are estimated at around 17 metric tons. Reentry scenarios involving mega‐constellations point to over 360 metric tons of aluminum oxide compounds per year, which can lead to significant ozone depletion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations

Ferreira,

Huang,

Nomura

et al. 2024

Geophysical Research Letters

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“…the stoichiometric coefficients of the products and reagents from Eq (11),. and summation is performed over all reactions.…”

mentioning

confidence: 99%

Development and testing of a numerical simulation method for thermally nonequilibrium dissociating flows in ANSYS Fluent

Shoev

Bondar

Oblapenko

et al. 2016

Thermophys. Aeromech.

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Various issues of numerical simulation of supersonic gas flows with allowance for thermochemical nonequilibrium on the basis of fluid dynamic equations in the two-temperature approximation are discussed. The computational tool for modeling flows with thermochemical nonequilibrium is the commercial software package ANSYS Fluent with an additional userdefined open-code module. A comparative analysis of results obtained by various models of vibration-dissociation coupling in binary gas mixtures of nitrogen and oxygen is performed. Results of numerical simulations are compared with available experimental data.

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Aerodynamic characterization of space debris in the VKI Longshot hypersonic tunnel using a free-flight measurement technique

et al. 2020

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MISTRAL: CONUS Debut Flow Field and Heat Transfer Calculations

Cited by 3 publications

References 4 publications

Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations

Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations

Development and testing of a numerical simulation method for thermally nonequilibrium dissociating flows in ANSYS Fluent

Aerodynamic characterization of space debris in the VKI Longshot hypersonic tunnel using a free-flight measurement technique

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