Numerical investigation of helical coil tube bundle in turbulent cross flow using large eddy simulation

2020 ◽  
Vol 82 ◽  
pp. 108529
Author(s):  
Samuel J. Lee ◽  
Yassin A. Hassan
Keyword(s):  
Large Eddy Simulation ◽  
Numerical Investigation ◽  
Tube Bundle ◽  
Cross Flow ◽  
Helical Coil ◽  
Eddy Simulation ◽  
Large Eddy

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.

Large Eddy Simulation of a Supercritical Fuel Jet in Cross Flow using GPU-Acceleration

2016 ◽  
Author(s):  
Kalyana C. Gottiparthi ◽  
Ramanan Sankaran ◽  
Anthony M. Ruiz ◽  
Guilhem Lacaze ◽  
Joseph C. Oefelein
Keyword(s):  
Large Eddy Simulation ◽  
Cross Flow ◽  
Gpu Acceleration ◽  
Eddy Simulation ◽  
Jet In Cross Flow ◽  
Fuel Jet ◽  
Large Eddy

Large Eddy Simulation of Cross Flow in Pipe Junction

2018 ◽  
Author(s):  
Jiajun Chen ◽  
Yue Sun ◽  
Hang Zhang ◽  
Dakui Feng ◽  
Zhiguo Zhang
Keyword(s):  
Large Eddy Simulation ◽  
Stokes Equations ◽  
Numerical Study ◽  
Three Dimensional ◽  
Cross Flow ◽  
Exciting Force ◽  
Navier Stokes ◽  
Pipe Network ◽  
Eddy Simulation ◽  
Large Eddy

Mixing in pipe junctions can play an important role in exciting force and distribution of flow in pipe network. This paper investigated the cross pipe junction and proposed an improved plan, Y-shaped pipe junction. The numerical study of a three-dimensional pipe junction was performed for calculation and improved understanding of flow feature in pipe. The filtered Navier–Stokes equations were used to perform the large-eddy simulation of the unsteady incompressible flow in pipe. From the analysis of these results, it clearly appears that the vortex strength and velocity non-uniformity of centerline, can be reduced by Y-shaped junction. The Y-shaped junction not only has better flow characteristic, but also reduces head loss and exciting force. The results of the three-dimensional improvement analysis of junction can be used in the design of pipe network for industry.

scholarly journals Large Eddy Simulation of Inclined Round Jet Issuing into Cross-Flow

2012 ◽  
Vol 78 (789) ◽  
pp. 1107-1117 ◽  
Author(s):  
Eiji SAKAI ◽  
Toshihiko TAKAHASHI ◽  
Hiroaki WATANABE
Keyword(s):  
Large Eddy Simulation ◽  
Cross Flow ◽  
Round Jet ◽  
Eddy Simulation ◽  
Large Eddy
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