Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation.
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| Title: | Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation. |
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| Authors: | Holdampf, Sydney A.1 (AUTHOR), Osborne, Andrew G.1,2 (AUTHOR), Deinert, Mark R.1,2,3 (AUTHOR) mdeinert@mines.edu |
| Source: | Energies (19961073). Oct2022, Vol. 15 Issue 19, p7027. 13p. |
| Subjects: | Geothermal reactors, Finite differences, Thermal conductivity, Thermophysical properties, Fast reactors |
| Abstract: | Thermal response time is an important parameter for the control of fast reactors. Modern thermal hydraulic codes allow for the modeling of transient responses and can also be used to understand the dominant factors that affect them. However, simulations can be computationally expensive, particularly for performing parametric analyses of how thermophysical properties affect transient behavior. Here, we present a method for using linear stability analysis to estimate thermal response time and determine the key parameters that affect transient behavior without performing a forward simulation. The approach can also be used to corroborate simulation results and is tested against simulation results produced with a 2D finite difference model. The results show that this approach produces time-dependent temperature profiles that are within 2 × 10−5–0.1% of the numerical results for a single node perturbation. Changes in temperature have the greatest effect on thermal response time, followed by changes to thermal conductivity. [ABSTRACT FROM AUTHOR] |
| Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 159669000 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Holdampf%2C+Sydney+A%2E%22">Holdampf, Sydney A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Osborne%2C+Andrew+G%2E%22">Osborne, Andrew G.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Deinert%2C+Mark+R%2E%22">Deinert, Mark R.</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> mdeinert@mines.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Oct2022, Vol. 15 Issue 19, p7027. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Geothermal+reactors%22">Geothermal reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+differences%22">Finite differences</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermophysical+properties%22">Thermophysical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Fast+reactors%22">Fast reactors</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Thermal response time is an important parameter for the control of fast reactors. Modern thermal hydraulic codes allow for the modeling of transient responses and can also be used to understand the dominant factors that affect them. However, simulations can be computationally expensive, particularly for performing parametric analyses of how thermophysical properties affect transient behavior. Here, we present a method for using linear stability analysis to estimate thermal response time and determine the key parameters that affect transient behavior without performing a forward simulation. The approach can also be used to corroborate simulation results and is tested against simulation results produced with a 2D finite difference model. The results show that this approach produces time-dependent temperature profiles that are within 2 × 10−5–0.1% of the numerical results for a single node perturbation. Changes in temperature have the greatest effect on thermal response time, followed by changes to thermal conductivity. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en15197027 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 7027 Subjects: – SubjectFull: Geothermal reactors Type: general – SubjectFull: Finite differences Type: general – SubjectFull: Thermal conductivity Type: general – SubjectFull: Thermophysical properties Type: general – SubjectFull: Fast reactors Type: general Titles: – TitleFull: Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Holdampf, Sydney A. – PersonEntity: Name: NameFull: Osborne, Andrew G. – PersonEntity: Name: NameFull: Deinert, Mark R. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 15 – Type: issue Value: 19 Titles: – TitleFull: Energies (19961073) Type: main |
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