The Experimental Study on Mixing Characteristics in a Square Subchannel Geometry with Typical Flow Deflectors
The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 × 5 rod bundle array by using a two-color LDA system. The detailed measurement data of lateral velocities in subchannels have been obtained as fabricating the rod bundle array 2.6 times larger than the real...
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Published in | Heat transfer engineering Vol. 29; no. 8; pp. 695 - 703 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Philadelphia, PA
Taylor & Francis Group
01.08.2008
Taylor & Francis |
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Abstract | The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 × 5 rod bundle array by using a two-color LDA system. The detailed measurement data of lateral velocities in subchannels have been obtained as fabricating the rod bundle array 2.6 times larger than the real bundle size. Two types of flow deflectors were selected for the test: a conventional split-type mixing vane and a swirl-type vane that had been designed to enhance the swirling flow in a subchannel. Experiments were performed in a cold test loop facility at KAERI. The experimental conditions were normal pressure (1.5 bar) and temperature (35°C). The average axial velocity was maintained at 1.5 m/s and was equivalent to Re = 50,000. From the experimental results, specific flow characteristics for each vane types were observed. |
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AbstractList | The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 t 5 rod bundle array by using a two-color LDA system. The detailed measurement data of lateral velocities in subchannels have been obtained as fabricating the rod bundle array 2.6 times larger than the real bundle size. Two types of flow deflectors were selected for the test: a conventional split-type mixing vane and a swirl-type vane that had been designed to enhance the swirling flow in a subchannel. Experiments were performed in a cold test loop facility at KAERI. The experimental conditions were normal pressure (1.5 bar) and temperature (35 deg C). The average axial velocity was maintained at 1.5 m/s and was equivalent to Re = 50,000. From the experimental results, specific flow characteristics for each vane types were observed. The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 × 5 rod bundle array by using a two-color LDA system. The detailed measurement data of lateral velocities in subchannels have been obtained as fabricating the rod bundle array 2.6 times larger than the real bundle size. Two types of flow deflectors were selected for the test: a conventional split-type mixing vane and a swirl-type vane that had been designed to enhance the swirling flow in a subchannel. Experiments were performed in a cold test loop facility at KAERI. The experimental conditions were normal pressure (1.5 bar) and temperature (35°C). The average axial velocity was maintained at 1.5 m/s and was equivalent to Re = 50,000. From the experimental results, specific flow characteristics for each vane types were observed. |
Author | Chang, Seok Kyu Chun, Tae Hyun Moon, Sang Ki Baek, Won-Pil |
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Keywords | Turbulent flow Swirling flow Rod bundle Test facility Doppler laser anemometer Speed measurement Thermohydraulics Deflector Experimental study Turbulent mixing Turbulence structure Nuclear reactor |
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References | Holloway M. V. (CIT0006) 2004; 126 Shen Y. F. (CIT0003) 1991; 125 McClusky H. L. (CIT0005) 2002; 124 CIT0004 Yang S. K. (CIT0002) 1995 Yang S. K. (CIT0001) 1998; 120 |
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Snippet | The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 × 5 rod bundle array by using a two-color LDA system. The... The lateral flow structures in a subchannel geometry were carefully examined in an enlarged 5 t 5 rod bundle array by using a two-color LDA system. The... |
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SubjectTerms | Applied sciences Energy Energy. Thermal use of fuels Exact sciences and technology Fission nuclear power plants Fluid dynamics Fundamental areas of phenomenology (including applications) Installations for energy generation and conversion: thermal and electrical energy Instrumentation for fluid dynamics Physics |
Title | The Experimental Study on Mixing Characteristics in a Square Subchannel Geometry with Typical Flow Deflectors |
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