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Keywords: direct numerical simulation
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Proceedings Papers

Microscopic Turbulence Topology Analysis of the Cross Flow Over a Square Arranged Tube Bundle Using Direct Numerical Simulation

Xiaoyang Xie, Houjian Zhao, Xiaowei Li, Xinxin Wu
Proc. ASME. ICONE31, Volume 6: Thermal-Hydraulics and Safety Analysis, V006T07A099, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-136171
https://doi.org/10.1115/ICONE31-136171
.... In the current investigation, microscopic analysis on turbulence topology of cross flow over a square arranged tube bundle are investigated using Direct Numerical Simulation (DNS). The time averaged flow field as well as the Reynolds stress distributions are first discussed. Then, a method that utilizes a red...
View Paper titled, Microscopic Turbulence Topology Analysis of the Cross Flow Over a Square Arranged Tube Bundle Using Direct Numerical Simulation
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Topics: Computer simulation, Cross-flow, Reynolds stress, Topology, Turbulence
Proceedings Papers

Direct Numerical Simulation Study on Turbulent Flow and Heat Transfer Behavior of Helium-Xenon Gas Mixture in a Round Pipe

Ruini Zhang, Jian Deng, Zonglan Wei, Qi Lu, Wenbin Han
Proc. ASME. ICONE31, Volume 7: Computational Fluid Dynamics (CFD) and Applications, V007T08A018, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-134985
https://doi.org/10.1115/ICONE31-134985
.... To better reveal the flow and heat transfer mechanism of He-Xe gas mixture, 2 direct numerical simulation (DNS) cases of He-Xe gas mixture flowing through a heated pipe were performed. One is based on the experiment case (RUN696) of Taylor (1988), and another one is set with a higher temperature range...
View Paper titled, Direct Numerical Simulation Study on Turbulent Flow and Heat Transfer Behavior of Helium-Xenon Gas Mixture in a Round Pipe
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Topics: Computer simulation, Heat transfer, Helium, Pipes, Turbulence
Proceedings Papers

Calculation of Inter-Subchannel Turbulent Mixing Rate and Heat Transfer in a Triangular-Arrayed Rod Bundle Using Direct Numerical Simulation

Yury V. Yudov
Proc. ASME. ICONE14, Volume 4: Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 31-37, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ICONE14-89111
https://doi.org/10.1115/ICONE14-89111
... 17 09 2008 The direct numerical simulation, extended to boundary-fitted coordinate, has been carried out for a fully-developed turbulent flow thermal hydraulics in a triangular rod bundle. The rod bundle is premised to be an infinite array. The spacer grid effects are ignored...
View Paper titled, Calculation of Inter-Subchannel Turbulent Mixing Rate and Heat Transfer in a Triangular-Arrayed Rod Bundle Using Direct Numerical Simulation
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Topics: Computer simulation, Fuel rods, Heat transfer, Turbulence