scholarly journals Finite-Element Simulation of the Thermal Regime of the Erebus Glacier Tongue, Antarctica

1986 ◽  
Vol 32 (112) ◽  
pp. 530-534
Author(s):  
D.F.E. Stolle ◽  
F.A. Mirza

AbstractFinite-element method is used to determine the temperature distribution within the Erebus Glacier tongue based on information from short-term observations (Holdsworth, 1982). It is shown that, provided the up-stream temperature profile along the depth is known, steady-state assumptions are reliable for computing the temperature field within most of the ice mass at any given time for a glacier tongue. Numerical results from analyses of the Erebus Glacier tongue also indicate that the main transport of heat is through advection as expected and, hence, a realistic estimate of the velocity field becomes important.

1986 ◽  
Vol 32 (112) ◽  
pp. 530-534
Author(s):  
D.F.E. Stolle ◽  
F.A. Mirza

AbstractFinite-element method is used to determine the temperature distribution within the Erebus Glacier tongue based on information from short-term observations (Holdsworth, 1982). It is shown that, provided the up-stream temperature profile along the depth is known, steady-state assumptions are reliable for computing the temperature field within most of the ice mass at any given time for a glacier tongue. Numerical results from analyses of the Erebus Glacier tongue also indicate that the main transport of heat is through advection as expected and, hence, a realistic estimate of the velocity field becomes important.


2012 ◽  
Vol 236-237 ◽  
pp. 536-542 ◽  
Author(s):  
Xiang Lei Duan ◽  
Shu Guang Zuo ◽  
Yong Li ◽  
Chen Fei Jiang ◽  
Xue Liang Guo

To analyze the steady-state temperature field, a three-factor orthogonal test was taken to study comprehensively how the load, speed and tire pressure can influence the tire temperature. The finite element simulation was carried out according to the uncoupled idea. Based on the single-factor analysis towards the speed factor, the actual convection coefficient of different boundaries was determined to calculate the steady-state temperature field at last. These analyses indicate that the tire temperature rise increase with the factor of load and speed, decrease with the increase of the initial tire pressure. The load has the biggest influence on the tire temperature rise, while the speed has the least. With the combination of steady-state temperature field and heat generation rate distribution, all these high-temperature regions can be explained clearly from the finite element perspective.


2011 ◽  
Vol 221 ◽  
pp. 495-504
Author(s):  
Hui Guang Bian ◽  
Chuan Sheng Wang ◽  
Rui Qin Wang ◽  
Zhen Zhen Wang ◽  
Jun Ling Zhang

This paper analyzes the three-dimensional temperature field of mixer chamber during the mixing process by using the finite element method. The paper focuses on analyzing the three-dimensional temperature field of mixer chamber, the distribution of heat transferring, and the influence of forced cooling on the mixing temperature, and has verified by experiment the accuracy of finite element simulation of mixer chamber temperature.


2011 ◽  
Vol 383-390 ◽  
pp. 2578-2584
Author(s):  
Lin Dong ◽  
Hui Ping Jiang ◽  
He Shun Wang

Based on finite element simulation, the temperature field model for the frictional pair of third rail and collector shoe under the coupling of contact resistor thermal and friction thermal was established. The method of coupling the two kinds of thermal was given in detail, the temperature field was calculated, and the maximum coupled temperature changing under different electric current, velocity, and displacement of the model was studied. The results show that the temperature raising effect of friction thermal and contact resistor thermal is different. In the process of mechanical friction without electric current, the highest temperature is in the contact center line, the temperature distribution expands around the contact zone in descending tendency. But in couple condition, the temperature distribution with electric current expands around the contact point in descending tendency. In the two conditions, the temperature gradients are all becoming smaller. The maximum coupled temperature increases with the increasing of the electric current, and decreases with the increasing of the velocity under the constant displacement and normal force. The maximum coupled temperature increases linearly with the increasing of displacement under constant electric current, velocity and normal force.


2013 ◽  
Vol 791-793 ◽  
pp. 411-414
Author(s):  
Tuan Jie Liu ◽  
Ning Shan ◽  
Yong Zhong Ma

The temperature field is an important aspect to study the interaction mechanism between the laser and glass. The temperature distribution on the surface of the glass that illuminated by the CO laser is numerical simulated by using the finite element method. The change of the temperature field of the target, irradiated by the laser in different time or different power, is simulated respectively, get the curve of the temperature field which reflects the temperature at the center spot changing with the action time and power.


2014 ◽  
Vol 633-634 ◽  
pp. 845-849
Author(s):  
Ling Dong ◽  
Xi Chen Yang ◽  
Yun Shan Wang ◽  
Jian Bo Lei

It plays an important role in guiding laser remanufacturing process and process control to research temperature field of laser remanufacturing. A numerical simulation method of temperature field based on MATLAB PDE Tool is proposed. Theoretical model of temperature field is presented. The temperature fields at different times are calculated and simulated with finite element method and MATLAB software with PDE Toolbox. The results show that this method can accurately calculate the temperature distribution of the laser remanufacturing process. The simulation results are helpful to optimize process parameters and to improve the quality of laser remanufacturing.


Author(s):  
Humberto Alves da Silveira Monteiro ◽  
Guilherme Garcia Botelho ◽  
Roque Luiz da Silva Pitangueira ◽  
Rodrigo Peixoto ◽  
FELICIO BARROS

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1379
Author(s):  
Tomasz Kania ◽  
Valery Derkach ◽  
Rafał Nowak

Cracking in non-load-bearing internal partition walls is a serious problem that frequently occurs in new buildings within the short term after putting them into service or even before completion of construction. Sometimes, it is so considerable that it cannot be accepted by the occupiers. The article presents tests of cracking in ceramic walls with a door opening connected in a rigid and flexible way along vertical edges. The first analyzes were conducted using the finite element method (FEM), and afterward, the measurements of deformations and stresses in walls on deflecting floors were performed on a full scale in the actual building structure. The measurements enabled to determine floor deformations leading to cracking of walls and to establish a dependency between the values of tensile stresses within the area of the door opening corners and their location along the length of walls and type of vertical connection with the structure.


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