The numerical simulation of the flow distribution and flow-induced vibration analysis for intermediate heat exchanger in a pool-type fast breeder reactor

2021 ◽  
Vol 131 ◽  
pp. 103605
Author(s):  
Binbin Qiu ◽  
Bowen Du ◽  
Chenxi Huang ◽  
Weixiong Chen ◽  
Junjie Yan ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Heat Exchanger ◽  
Vibration Analysis ◽  
Flow Distribution ◽  
Fast Breeder Reactor ◽  
Flow Induced Vibration ◽  
Intermediate Heat Exchanger ◽  
Pool Type

Thermal hydraulic investigations of intermediate heat exchanger in a pool-type fast breeder reactor

2008 ◽  
Vol 238 (7) ◽  
pp. 1577-1591 ◽  
Author(s):  
R. Gajapathy ◽  
K. Velusamy ◽  
P. Selvaraj ◽  
P. Chellapandi ◽  
S.C. Chetal ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Fast Breeder Reactor ◽  
Intermediate Heat Exchanger ◽  
Pool Type

Numerical simulation of flow distribution in the header of plate-fin heat exchanger

2020 ◽  
Vol 34 (14n16) ◽  
pp. 2040111
Author(s):  
Shu-Ling Tian ◽  
Ying-Ying Shen ◽  
Yao Li ◽  
Hai-Bo Wang ◽  
Sheryar Muhammad ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Heat Exchangers ◽  
Optimization Design ◽  
High Efficiency ◽  
Flow Distribution ◽  
Optimal Number ◽  
Compact Structure ◽  
Flow Maldistribution

Plate-fin heat exchangers are widely used in industry at present due to their compact structure and high efficiency. However, there is a problem of flow maldistribution, resulting in poor performance of heat exchangers. The influence of the header configuration on fluid flow distribution is studied by using CFD software FLUENT. The numerical results show that the fluid flow inside the header is seriously uneven. The reliability of the numerical simulation is validated against the published results. They are found to be basically consistent within considerable error. The optimal number of the punch baffle is investigated. Various header configuration with different opening ratios have been studied under the same boundary conditions. The gross flow maldistribution parameter (S) is used to evaluate flow nonuniformity, and the flow maldistribution parameters of different schemes under different Reynolds numbers are listed and compared. The optimal header with minimum flow maldistribution parameter is obtained through the performance analysis of headers. It is found that the flow maldistribution of the improved header is significantly smaller compared with the conventional header. Hence, the efficiency of the heat exchanger is effectively enhanced. The conclusion provides a reference for the optimization design of plate-fin heat exchanger.

Dynamic simulation of accidental closure of intermediate heat exchanger isolation valve in a pool type LMFBR

2011 ◽  
Vol 38 (4) ◽  
pp. 748-756 ◽  
Author(s):  
K. Natesan ◽  
N. Kasinathan ◽  
K. Velusamy ◽  
P. Selvaraj ◽  
P. Chellapandi ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Dynamic Simulation ◽  
Intermediate Heat Exchanger ◽  
Pool Type

U-RANS Simulation of Single Elbow Pipe Flow Experiments Simulating JSFR Hot-Leg Piping

2015 ◽  
Author(s):  
Hidemasa Yamano ◽  
Masaaki Tanaka ◽  
Yukiharu Iwamoto
Keyword(s):  
Numerical Simulation ◽  
Heat Exchanger ◽  
Pressure Fluctuation ◽  
Reynolds Stress Model ◽  
Simulation Tool ◽  
Navier Stokes Equation ◽  
Partition Wall ◽  
Power Spectral ◽  
Significant Difference ◽  
Intermediate Heat Exchanger

This paper is intended to validate the numerical simulation tool, which is Unsteady Reynolds Averaged Navier-Stokes equation (U-RANS) approach with the Reynolds Stress Model using a commercial computational fluid dynamics code, by applying to the flow through a single short-elbow in the 1/10 and 1/3 scale water experiments simulating the Japan Sodium-Cooled Fast Reactor (JSFR) hot-leg piping. An additional objective of this paper is to investigate the effect of outlet condition at which the coolant overflows a partition wall in the upper part of an intermediate heat exchanger in the JSFR design. The numerical results were in good agreement with the 1/10 and 1/3 scale experimental data indicating time-averaged velocity distributions, flow field visualization, and power spectral densities of pressure fluctuation. These comparisons can conclude that the U-RANS numerical simulation tool was validated with its applicability to a single short elbow flow. The numerical simulation has also shown that the unsteady flow fields in the short elbow flow, which was characterized by a cyclic secondary flow and the subsequent horseshoe vortex. In this study, the effect of the outlet condition was also examined through the numerical simulation. At the outlet of the pipe, the simulation modeled the partition wall in the upper part of the intermediate heat exchanger, which has never been simulated in the experiments. The numerical simulation results were compared between with and without the intermediate heat exchanger at the pipe outlet in terms of the time-averaged velocity distribution, pressure fluctuation power spectral density, and so on. In the result, no significant difference between them was observed, so that it can be said that the effect of the outlet condition is negligibly small.

A CFD-Based Optimization Design of Flow Distribution Device in the Lower Plenum of Intermediate Heat Exchanger of SFR

2017 ◽  
Author(s):  
Xiaolong Zhang ◽  
Peichi Tseng ◽  
Jiyang Yu ◽  
Muhammad Saeed
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Velocity Distribution ◽  
Optimization Design ◽  
Flow Distribution ◽  
Separated Flow ◽  
Ansys Fluent ◽  
Disk Model ◽  
Tube Heat Exchanger ◽  
Intermediate Heat Exchanger

A computational fluid dynamics based simulation is performed to optimize the design of the flow distribution device in the lower plenum of the intermediate heat exchanger (IHX) of a pool-type sodium-cooled fast reactor (SFR) in this work. As a typical shell and tube heat exchanger, hot primary sodium flows in the IHX from the top and flows over the tube bundles, called shell-side. The secondary sodium (tube-side) runs through heat transfer tubes and its inlet plenum is specified at the bottom. The flow distribution device is arranged in the lower plenum of IHX, to change the flow distribution of the secondary sodium before into the heat transfer tubes. The CFD tool used in the work is ANSYS Fluent code. Two separated flow distribution devices have been simulated and compared. First, the orifice plates, three flow distribution orifice plates with different positions in the cylinder of lower plenum are respectively set as the model 1, 2 and 3. Secondly, the conical disk model, which is arranged at the bottom of the lower plenum, is established as model 4. And changing the size of the conical disk, the model 5 is established to predict the influence of the size of the conical disk on flow distribution. The results show that all of these models have similar velocity distributions at the outlet of lower plenum, which can be divided into three separate regions, where the flow velocity is higher at the inner and outer, and the velocity in the middle is lowest. When the orifice plate is set at the higher position, the overall velocity distribution is more uniform at the outlet. And the larger conical disk could make a more uniform velocity distribution as well.

Sign in / Sign up

Export Citation Format

Share Document