Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets
The present study experimentally and numerically investigates the effect of channel height on the flow and heat transfer characteristics of a channel impingement cooling configuration for various jet Reynolds numbers in the range of 2000–8600. A single array consisting of eleven jets with 0.8 mm dia...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/14/4327 |
| _version_ | 1827687596501762048 |
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| author | Min-Seob Shin Santhosh Senguttuvan Sung-Min Kim |
| author_facet | Min-Seob Shin Santhosh Senguttuvan Sung-Min Kim |
| author_sort | Min-Seob Shin |
| collection | DOAJ |
| description | The present study experimentally and numerically investigates the effect of channel height on the flow and heat transfer characteristics of a channel impingement cooling configuration for various jet Reynolds numbers in the range of 2000–8600. A single array consisting of eleven jets with 0.8 mm diameter injects water into the channel with 2 mm width at four different channel heights (3, 4, 5, and 6 mm). The average heat transfer coefficients at the target surface are measured by maintaining a temperature difference between the jet exit and the target surface in the range of 15–17 °C for each channel height. The experimental results show the average heat transfer coefficient at the target surface increases with the jet Reynolds number and decreases with the channel height. An average Nusselt number correlation is developed based on 85 experimentally measured data points with a mean absolute error of less than 4.31%. The numerical simulation accurately predicts the overall heat transfer rate within 10% error. The numerical results are analyzed to investigate the flow structure and its effect on the local heat transfer characteristics. The present study advances the primary understanding of the flow and heat transfer characteristics of the channel impingement cooling configuration with liquid jets. |
| first_indexed | 2024-03-10T09:40:21Z |
| format | Article |
| id | doaj.art-986c26c64b6a47fab3b9ff2cc3f8f3c8 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T09:40:21Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-986c26c64b6a47fab3b9ff2cc3f8f3c82023-11-22T03:43:45ZengMDPI AGEnergies1996-10732021-07-011414432710.3390/en14144327Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water JetsMin-Seob Shin0Santhosh Senguttuvan1Sung-Min Kim2School of Mechanical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 16419, KoreaSchool of Mechanical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 16419, KoreaSchool of Mechanical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 16419, KoreaThe present study experimentally and numerically investigates the effect of channel height on the flow and heat transfer characteristics of a channel impingement cooling configuration for various jet Reynolds numbers in the range of 2000–8600. A single array consisting of eleven jets with 0.8 mm diameter injects water into the channel with 2 mm width at four different channel heights (3, 4, 5, and 6 mm). The average heat transfer coefficients at the target surface are measured by maintaining a temperature difference between the jet exit and the target surface in the range of 15–17 °C for each channel height. The experimental results show the average heat transfer coefficient at the target surface increases with the jet Reynolds number and decreases with the channel height. An average Nusselt number correlation is developed based on 85 experimentally measured data points with a mean absolute error of less than 4.31%. The numerical simulation accurately predicts the overall heat transfer rate within 10% error. The numerical results are analyzed to investigate the flow structure and its effect on the local heat transfer characteristics. The present study advances the primary understanding of the flow and heat transfer characteristics of the channel impingement cooling configuration with liquid jets.https://www.mdpi.com/1996-1073/14/14/4327jet impingementconfined array jetsheat transfer coefficientcomputational fluid dynamics |
| spellingShingle | Min-Seob Shin Santhosh Senguttuvan Sung-Min Kim Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets Energies jet impingement confined array jets heat transfer coefficient computational fluid dynamics |
| title | Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets |
| title_full | Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets |
| title_fullStr | Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets |
| title_full_unstemmed | Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets |
| title_short | Investigations of Flow and Heat Transfer Characteristics in a Channel Impingement Cooling Configuration with a Single Row of Water Jets |
| title_sort | investigations of flow and heat transfer characteristics in a channel impingement cooling configuration with a single row of water jets |
| topic | jet impingement confined array jets heat transfer coefficient computational fluid dynamics |
| url | https://www.mdpi.com/1996-1073/14/14/4327 |
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