ICOPE-15-C155 The Numerical Simulation of Heat Exchange Tube Bundle Based on FSI

2015 ◽  
Vol 2015.12 (0) ◽  
pp. _ICOPE-15--_ICOPE-15-
Author(s):  
Rui Wang ◽  
Lu Wang ◽  
Zheng Wang ◽  
Qing Miao
Keyword(s):  
Numerical Simulation ◽  
Heat Exchange ◽  
Tube Bundle ◽  
Heat Exchange Tube

Numerical Simulation on Fouling of the Steam Cooler in a Power Plant

2013 ◽  
Vol 291-294 ◽  
pp. 1969-1974
Author(s):  
Wei Liang Cheng ◽  
An Di ◽  
Li Chao Liu ◽  
Lian Guang Liu
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Exchange ◽  
Power Plant ◽  
Power Plants ◽  
Engineering Application ◽  
Flow State ◽  
Equipment Safety ◽  
Heat Exchange Tube ◽  
Reasonable Model

The fouling in the heat transfer devices of power plants, not only changes the fluid flow state designed, but also counteracts the heat transfer, so the equipment safety and economy are reduced. The adsorption and deposition about fouling is a quite complicated chemical and physical process, and it is difficult to obtain an accurate and reasonable model and its engineering application. Therefore, under some different conditions such as velocity, temperature and concentration of fouling and pipe position, the numerical simulation is obtained in the power plant steam cooler. The temperature inside the pipe is gradually decreased with the velocity. At the same time, the fouling increases in the first half of the exchanger pipe, and easily appears near regions of entrance more and more. The fouling may occurs at the outlet position of the heat exchange tube. Under the same conditions the heat exchange tube near centre line is easier to bring the fouling.

scholarly journals Unsteady Model for Transverse Fluid Elastic Instability of Heat Exchange Tube Bundle

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Jun Liu ◽  
Chen Huang ◽  
Naibing Jiang
Keyword(s):  
Heat Exchange ◽  
Analytical Model ◽  
Complex Number ◽  
Tube Bundle ◽  
Elastic Instability ◽  
Explicit Model ◽  
Practical Application ◽  
Heat Exchange Tube ◽  
Nonsteady State ◽  
The Stability

From the viewpoint of practical application, based on the unsteady analytical model for transverse fluid elastic instability of tube array proposed by Yetisir and the linear attenuation function introduced by Li Ming, a new explicit model based on nonsteady state “streamtube” hypothesis is proposed and solved using complex number method. In the model, numerical integral is avoided and inappropriate aspects in Li Ming model are modified. Using the model, the fluid elastic instability analysis of a single flexible tube is made. The stability graphs for four typical types of tube array are plotted and contrasted with experimental results. It is found that the current explicit model is effective in the analysis of transverse fluid elastic instability of tube bundle.

Numerical simulation and experiment investigation on unit heat exchange tube for solar heat receiver

Solar Energy ◽  
2008 ◽  
Vol 82 (12) ◽  
pp. 1229-1234 ◽  
Author(s):  
Haiting Cui ◽  
Yuming Xing ◽  
Yanshu Guo ◽  
Zhenhui Wang ◽  
Haochen Cui ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Heat Exchange ◽  
Solar Heat ◽  
Heat Receiver ◽  
Heat Exchange Tube ◽  
Simulation And Experiment

Application with Simultaneous Electrocontact Heating Stretching to Reduce Residual Stresses in the Heat Exchange Tube

2015 ◽  
Vol 1127 ◽  
pp. 121-126
Author(s):  
Georgy Shimov ◽  
Andrey Serebryakov ◽  
Aleksander Serebryakov
Keyword(s):  
Heat Exchange ◽  
Residual Stresses ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Heat Processing ◽  
Heat Exchange Tube ◽  
Working Principle ◽  
Electrocontact Heating ◽  
Compressive Residual Stresses

The main reason of appearance and growth of corrosion damages of the nuclear steam generator heat exchanger tubes is the process of stress-corrosion cracking of metal under the influence of residual tensile stress.The article contain the suggestion of the method that combines the operation of heat processing and straightening of pipes by stretching. The approbation of the method was carried out in the laboratory conditions. There is described the construction and working principle of a trial installation. During the experiments different parameters of electrocontact heating with stretching were tested. Approbation showed that the proposed method can reduce the level of tensile residual stresses or get compressive residual stresses in the wall of the tubes, which increases their resistance to corrosion.Keywords:Steam generator, heat exchange tubes, stress corrosion cracking, intercrystalline corrosion, residual stresses

scholarly journals NUMERICAL SIMULATION ON THERMAL DIFFUSION CONCERNING AIR-SEA HEAT EXCHANGE EFFECTS

1986 ◽  
Vol 1 (20) ◽  
pp. 183
Author(s):  
P.C. Chyen ◽  
C.S. Yang ◽  
I.L. Wang ◽  
H.H. Hwung
Keyword(s):  
Numerical Simulation ◽  
Heat Exchange ◽  
Water Temperature ◽  
Thermal Diffusion ◽  
Nuclear Power ◽  
Water System ◽  
Cooling Water ◽  
Weather Conditions ◽  
Water Area ◽  
Surrounding Water

The numerical simulations on thermal diffusion always concentrated upon the raised temperature and temperature distributions after the heated water discharged from outlet into surrounding water, and the surrounding water temperature was assumed to be a constant. Actually, the water temperature on surface layer in shallow water area varies several centigrade degrees depended upon the weather conditions during a whole day. In order to obtain the absolute water temperature prepared for the ecological changes assessment and even provided for the operation basis of the cooling water system that air-sea heat exchange has to be considered in the numerical simulation of thermal discharges. For the practical application of this numerical simulation, the first nuclear power plant in Taiwan was taken as an example and simulated in this paper. And the results were presented in figures.

Sign in / Sign up

Export Citation Format

Share Document