RELAP5 application for water hammer analysis in different thermal-hydraulic systems
The water hammer phenomenon investigations employing RELAP5 code with one-dimensional two-fluid six-equation models of water and steam flow were performed and the main results shared in this paper. The capability of RELAP5 code to simulate transients leading strong pressure pulses was investigated e...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | International Journal of Thermofluids |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202722000209 |
| _version_ | 1811248511023316992 |
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| author | Algirdas Kaliatka Mindaugas Vaišnoras Mindaugas Valinčius Tadas Kaliatka |
| author_facet | Algirdas Kaliatka Mindaugas Vaišnoras Mindaugas Valinčius Tadas Kaliatka |
| author_sort | Algirdas Kaliatka |
| collection | DOAJ |
| description | The water hammer phenomenon investigations employing RELAP5 code with one-dimensional two-fluid six-equation models of water and steam flow were performed and the main results shared in this paper. The capability of RELAP5 code to simulate transients leading strong pressure pulses was investigated employing the measurement results of three test facilities for different water hammer types: PPP at UMSICHT, CWHTF at FZR Dresden and PMK-2 at AEKI. Based on the benchmarking results the recommendations for the modelling of piping systems, which could be affected by different types of water hammer were developed and tested. The recommendations cover selection of thermal-hydraulic system conditions, parameters of modelling and RELAP5 code correlations. These recommendations have enabled to develop a detail RELAP5 models for the simulation of water hammer effects in further research works. The applications of RELAP5 code for water hammer analysis in different thermal-hydraulic systems (RBMK-1500 reactor main circulation loop, targets cooling/heating circuit in Wendelstein 7-X experimental stellarator facility and pipelines in district heating system) are presented in this paper. The performed analyses of transients demonstrated that the pressure pulsations could appear in all these systems as results of check valve closures. However, pressure surges are not so strong due to specific of such systems and integrity of pipelines remains not violated. |
| first_indexed | 2024-04-12T15:29:23Z |
| format | Article |
| id | doaj.art-96fd7e46de0641199902c528af4998a6 |
| institution | Directory Open Access Journal |
| issn | 2666-2027 |
| language | English |
| last_indexed | 2024-04-12T15:29:23Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj.art-96fd7e46de0641199902c528af4998a62022-12-22T03:27:10ZengElsevierInternational Journal of Thermofluids2666-20272022-05-0114100154RELAP5 application for water hammer analysis in different thermal-hydraulic systemsAlgirdas Kaliatka0Mindaugas Vaišnoras1Mindaugas Valinčius2Tadas Kaliatka3Corresponding author.; Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos str. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos str. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos str. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos str. 3, LT-44403 Kaunas, LithuaniaThe water hammer phenomenon investigations employing RELAP5 code with one-dimensional two-fluid six-equation models of water and steam flow were performed and the main results shared in this paper. The capability of RELAP5 code to simulate transients leading strong pressure pulses was investigated employing the measurement results of three test facilities for different water hammer types: PPP at UMSICHT, CWHTF at FZR Dresden and PMK-2 at AEKI. Based on the benchmarking results the recommendations for the modelling of piping systems, which could be affected by different types of water hammer were developed and tested. The recommendations cover selection of thermal-hydraulic system conditions, parameters of modelling and RELAP5 code correlations. These recommendations have enabled to develop a detail RELAP5 models for the simulation of water hammer effects in further research works. The applications of RELAP5 code for water hammer analysis in different thermal-hydraulic systems (RBMK-1500 reactor main circulation loop, targets cooling/heating circuit in Wendelstein 7-X experimental stellarator facility and pipelines in district heating system) are presented in this paper. The performed analyses of transients demonstrated that the pressure pulsations could appear in all these systems as results of check valve closures. However, pressure surges are not so strong due to specific of such systems and integrity of pipelines remains not violated.http://www.sciencedirect.com/science/article/pii/S2666202722000209Water hammer phenomenonPiping systemsModelling of thermal-hydraulic processes |
| spellingShingle | Algirdas Kaliatka Mindaugas Vaišnoras Mindaugas Valinčius Tadas Kaliatka RELAP5 application for water hammer analysis in different thermal-hydraulic systems International Journal of Thermofluids Water hammer phenomenon Piping systems Modelling of thermal-hydraulic processes |
| title | RELAP5 application for water hammer analysis in different thermal-hydraulic systems |
| title_full | RELAP5 application for water hammer analysis in different thermal-hydraulic systems |
| title_fullStr | RELAP5 application for water hammer analysis in different thermal-hydraulic systems |
| title_full_unstemmed | RELAP5 application for water hammer analysis in different thermal-hydraulic systems |
| title_short | RELAP5 application for water hammer analysis in different thermal-hydraulic systems |
| title_sort | relap5 application for water hammer analysis in different thermal hydraulic systems |
| topic | Water hammer phenomenon Piping systems Modelling of thermal-hydraulic processes |
| url | http://www.sciencedirect.com/science/article/pii/S2666202722000209 |
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