Large Eddy Simulation of fully-developed flow in a helical segmented-fin Tube Bundle

2021 ◽  
Author(s):  
M. Salinas-Vázquez ◽  
J. Ramírez-Cruz ◽  
W. Vicente ◽  
E. Martínez-Espinosa ◽  
H.M. Aviña-Jiménezez ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Tube Bundle ◽  
Fully Developed Flow ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Fin Tube

Large Eddy Simulation of 5-Tube Bundle Helical Coil Steam Generator Test Section

2018 ◽  
Author(s):  
Mustafa Alper Yildiz ◽  
Elia Merzari ◽  
Yassin A. Hassan
Keyword(s):  
Large Eddy Simulation ◽  
Steam Generator ◽  
Test Section ◽  
Tube Bundle ◽  
Flow Behavior ◽  
Spectral Element ◽  
Helical Coil ◽  
Tube Heat Exchanger ◽  
Eddy Simulation ◽  
Large Eddy

Helical Coil Steam Generator (HCSG) is a specific type of shell and tube heat exchanger known for having a higher heat transfer coefficient than many other designs. For this reason, they are considered in Small Modular Reactor (SMR) and High Temperature Reactor (HTR) designs. Investigation of flow behavior in HTRs is important for better design. To investigate the flow on the shell side, five rod HCSG test section was built in Texas A&M University. Experiments were conducted at Reynolds number of approximately 9000. The spectral element code NEK5000 was used to do high fidelity large-eddy simulation (LES) of the test section to validate against experimental results. In this paper preliminary simulation results were presented. Pressure drop in preliminary results with seventh and ninth order polynomial expansion was consistent with experimental data.

scholarly journals Large Eddy Simulation of a flow through circular tube bundle

2011 ◽  
Vol 35 (9) ◽  
pp. 4393-4406 ◽  
Author(s):  
M. Salinas-Vázquez ◽  
M.A. de la Lama ◽  
W. Vicente ◽  
E. Martínez
Keyword(s):  
Large Eddy Simulation ◽  
Circular Tube ◽  
Tube Bundle ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Flow Through

LES and PANS of Turbulent Flow Through a Staggered Tube Bundle

2017 ◽  
Author(s):  
G. Minelli ◽  
S. Krajnović ◽  
B. Basara
Keyword(s):  
Experimental Data ◽  
Large Eddy Simulation ◽  
Tube Bundle ◽  
Dominant Frequency ◽  
Navier Stokes ◽  
Numerical Techniques ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Flow Through ◽  
Good Agreement

Two unsteady numerical techniques, Partially-Averaged Navier Stokes (PANS) and Large Eddy Simulation (LES), are used to predict the flow in a tube bundle. The results were compared with the existing experimental data. Both methods predicted the flow in a relatively good agreement with the experimental data although the PANS simulation used only fifty percent of the computational nodes compared to the LES. The results of the simulations are used to study the unsteadiness in the flow and identify a dominant frequency of the flow.

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