X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant
Recent studies have shown that the presence of dissolved salts in water can exhibit peculiar flow boiling and two-phase flow regimes. Two-phase flow and convective flow boiling are typically characterized with the help of void fraction measurements. To quantitatively improve our understanding of two...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Quantum Beam Science |
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| Online Access: | https://www.mdpi.com/2412-382X/5/4/31 |
| _version_ | 1797501086452416512 |
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| author | Seth Eckels Zayed Ahmed Molly Ross Daniel Franken Steven Eckels Hitesh Bindra |
| author_facet | Seth Eckels Zayed Ahmed Molly Ross Daniel Franken Steven Eckels Hitesh Bindra |
| author_sort | Seth Eckels |
| collection | DOAJ |
| description | Recent studies have shown that the presence of dissolved salts in water can exhibit peculiar flow boiling and two-phase flow regimes. Two-phase flow and convective flow boiling are typically characterized with the help of void fraction measurements. To quantitatively improve our understanding of two-phase flow and boiling phenomenon with seawater coolant, void fraction data are needed, which can not be obtained from optical imaging. In this paper, we present experimental void fraction measurements of saturated flow boiling of tap water and seawater using X-ray radiography. X-rays with a maximum energy level of 40 KeV were used for imaging the exit region of the heated test section. At lower heat flux levels, the two phase flow in seawater was bubbly and homogeneous in nature, resulting in higher void fractions as compared to tap water. With an increase in heat flux, the flow regime was similar to slug flow, and void fraction measurements approached similarity with tap water. The predicted pressure drop using the measured void faction shows good agreement with the measured total pressure drop across the test section, demonstrating the validity of the measurement process. |
| first_indexed | 2024-03-10T03:13:17Z |
| format | Article |
| id | doaj.art-14e3704bca8e406f88a2efe874c8c438 |
| institution | Directory Open Access Journal |
| issn | 2412-382X |
| language | English |
| last_indexed | 2024-03-10T03:13:17Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Quantum Beam Science |
| spelling | doaj.art-14e3704bca8e406f88a2efe874c8c4382023-11-23T10:21:06ZengMDPI AGQuantum Beam Science2412-382X2021-11-01543110.3390/qubs5040031X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater CoolantSeth Eckels0Zayed Ahmed1Molly Ross2Daniel Franken3Steven Eckels4Hitesh Bindra5Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USADepartment of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USADepartment of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USADepartment of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USADepartment of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USADepartment of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS 66506, USARecent studies have shown that the presence of dissolved salts in water can exhibit peculiar flow boiling and two-phase flow regimes. Two-phase flow and convective flow boiling are typically characterized with the help of void fraction measurements. To quantitatively improve our understanding of two-phase flow and boiling phenomenon with seawater coolant, void fraction data are needed, which can not be obtained from optical imaging. In this paper, we present experimental void fraction measurements of saturated flow boiling of tap water and seawater using X-ray radiography. X-rays with a maximum energy level of 40 KeV were used for imaging the exit region of the heated test section. At lower heat flux levels, the two phase flow in seawater was bubbly and homogeneous in nature, resulting in higher void fractions as compared to tap water. With an increase in heat flux, the flow regime was similar to slug flow, and void fraction measurements approached similarity with tap water. The predicted pressure drop using the measured void faction shows good agreement with the measured total pressure drop across the test section, demonstrating the validity of the measurement process.https://www.mdpi.com/2412-382X/5/4/31X-ray imagingflow boilingseawatervoid fractionflow regimespressure drop |
| spellingShingle | Seth Eckels Zayed Ahmed Molly Ross Daniel Franken Steven Eckels Hitesh Bindra X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant Quantum Beam Science X-ray imaging flow boiling seawater void fraction flow regimes pressure drop |
| title | X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant |
| title_full | X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant |
| title_fullStr | X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant |
| title_full_unstemmed | X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant |
| title_short | X-ray Imaging-Based Void Fraction Measurement in Saturated Flow Boiling Experiments with Seawater Coolant |
| title_sort | x ray imaging based void fraction measurement in saturated flow boiling experiments with seawater coolant |
| topic | X-ray imaging flow boiling seawater void fraction flow regimes pressure drop |
| url | https://www.mdpi.com/2412-382X/5/4/31 |
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