Temperature Field Analysis of Space Grid Structures

2012 ◽  
Vol 204-208 ◽  
pp. 877-880
Author(s):  
Guang Yong Wang ◽  
Na Wang
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Element Model ◽  
Field Analysis ◽  
Temperature Analysis ◽  
Grid Structure ◽  
Space Grid ◽  
Steel Members ◽  
Proposed Model ◽  
In Fire

A heat transfer finite element model for the temperature analysis of space grid structures considering the conduction and protection thickness of the steel members in fire is proposed, and the temperature field of a typical grid structure is analyzed by using the proposed model. The results show that the proposed model is reasonable.

Heat transfer model for calculation of the temperature field inside thin-walled sections in fire

2021 ◽  
Vol 169 ◽  
pp. 108416
Author(s):  
Michał Malendowski ◽  
Wojciech Szymkuć ◽  
Piotr Turkowski ◽  
Adam Glema ◽  
Wojciech Węgrzyński
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Heat Transfer Model ◽  
Transfer Model ◽  
Thin Walled ◽  
In Fire

The Temperature Field Research of an Engine Cylinder Liner Based on ANSYS

2014 ◽  
Vol 644-650 ◽  
pp. 459-462
Author(s):  
Yao Ye ◽  
Feng Wang ◽  
Yong Hai Wu
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Convective Heat Transfer Coefficient ◽  
Field Research ◽  
Cylinder Liner ◽  
Element Model ◽  
Engine Cylinder ◽  
Engine Cylinder Liner

The temperature field of cylinder liner directly affects the working process of the engine cylinder. Its research is an important research direction of the engine research. We analysis the location relationship between the cylinder liner and cooperate with the components analysis in this paper. Then the finite element model of cylinder liner component is established and boundary conditions such as gas convective heat transfer coefficient, the piston top heat transfer coefficient are analyzed. A certain type of engine cylinder liner is calculated by using ANSYS temperature field equation solvers. The model and the calculation method this article uses are of great significance for the temperature field research of other heat transfer components.

Numerical Analysis on Failure Modes of Steel Frame under Fire Combined Blast Loads

2013 ◽  
Vol 831 ◽  
pp. 476-480
Author(s):  
Shi Yan ◽  
Lu Yang ◽  
Xue Lei Jiang
Keyword(s):  
Finite Element Method ◽  
Temperature Field ◽  
Room Temperature ◽  
Failure Modes ◽  
Steel Frame ◽  
Frame Structure ◽  
Blast Load ◽  
Second Step ◽  
Temperature Analysis ◽  
In Fire

An H-shaped steel frame in fire combined blast loading was numerically developed in this paper using finite element method by ANSYS thermal analysis. At the first step, a temperature field has been numerically analyzed. At the second step, each element of the steel frame was assigned different modulus of elasticity and yield stress based on the temperature analysis results. A dynamic simulation of the steel frame subjected to a blast load was analyzed under such a temperature field. The failure modes of the frame structure has been discussed. Finally, a same shape frame at the room temperature under the same blast load was simulated to compare with that at the elevated temperature.

Volume Element Model for Modeling, Simulation, and Optimization of Parabolic Trough Solar Collectors

2017 ◽  
Author(s):  
Tugba S. Sensoy ◽  
Sam Yang ◽  
Juan C. Ordonez
Keyword(s):  
Heat Transfer ◽  
Differential Equations ◽  
Mathematical Formulation ◽  
Element Model ◽  
Volume Element ◽  
Heat Transfer Fluid ◽  
Solar Collectors ◽  
Parabolic Trough ◽  
Simulation And Optimization ◽  
Proposed Model

In this paper we present a dynamic three-dimensional volume element model (VEM) of a parabolic trough solar collector (PTC) comprising an outer glass cover, annular space, absorber tube, and heat transfer fluid. The spatial domain in the VEM is discretized with lumped control volumes (i.e., volume elements) in cylindrical coordinates according to the predefined collector geometry; therefore, the spatial dependency of the model is taken into account without the need to solve partial differential equations. The proposed model combines principles of thermodynamics and heat transfer, along with empirical heat transfer correlations, to simplify the modeling and expedite the computations. The resulting system of ordinary differential equations is integrated in time, yielding temperature fields which can be visualized and assessed with scientific visualization tools. In addition to the mathematical formulation, we present the model validation using the experimental data provided in the literature, and conduct two simple case studies to investigate the collector performance as a function of annulus pressure for different gases as well as its dynamic behavior throughout a sunny day. The proposed model also exhibits computational advantages over conventional PTC models-the model has been written in Fortran with parallel computing capabilities. In summary, we elaborate the unique features of the proposed model coupled with enhanced computational characteristics, and demonstrate its suitability for future simulation and optimization of parabolic trough solar collectors.

scholarly journals Temperature Field Calculation and Analysis within Steel Tube Reinforced Columns

2012 ◽  
Vol 6 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Lei Xu ◽  
Jiangang Sun
Keyword(s):  
Temperature Field ◽  
Theoretical Method ◽  
Steel Tube ◽  
Area Ratio ◽  
Field Analysis ◽  
Core Area ◽  
Field Calculation ◽  
Element Analysis ◽  
In Fire ◽  
Rising Time

The temperature field analysis method of steel tube reinforced columns under fire by finite element analysis software ABAQUS is proposed in this paper. The theoretical method is validated by tests, and the calculated results agree well with those of tests. On the basis of that, the influencing laws of temperature rising time; section perimeter; steel reinforcement ratio and sectional core area ratio on temperature field are discussed. It has been found that the surface temperatures of steel tube reinforced columns increase obviously with temperature rising time, and the temperatures of steel tubes and core concrete increase slowly. The effects of section size and sectional core area ratio on temperature field are significant, but steel ratio has very little effect on temperature both of steel tube and of sectional center. These achievements make it possible to study further theoretical study on the mechanic performance of steel tube reinforced concrete columns in fire.

Experimental and Numerical Investigations of Steel Profiles with Intumescent Coating Adjacent to Space-Enclosing Elements in Fire

2015 ◽  
Vol 6 (4) ◽  
pp. 237-246 ◽  
Author(s):  
Peter Kraus ◽  
Martin Mensinger ◽  
Florian Tabeling ◽  
Peter Schaumann
Keyword(s):  
Temperature Field ◽  
Numerical Model ◽  
Fire Protection ◽  
Experimental Investigations ◽  
Expansion Process ◽  
Intumescent Coating ◽  
Numerical Investigations ◽  
Steel Members ◽  
New Development ◽  
In Fire

In this paper, the research program “Optimized use of intumescent coating systems on steel members” is presented. The aim of the project is to quantify the influence of space-enclosing elements on the thermal behavior of supporting steel members. Those elements partially result in a restrained expansion of the fire protection system. Experimental investigations on coated beams and columns directly connected to space-enclosing elements are presented. Additionally, numerical simulations are performed for temperature field calculations of steel elements with intumescent coating. As a new development, the numerical model takes into account the expansion process of the intumescent coating.

Temperature Field Analysis on CA Mortar Ballastless Track of High-Speed Railway

2012 ◽  
Vol 531-532 ◽  
pp. 163-167
Author(s):  
Jun Fu ◽  
Yu Qin ◽  
You Yun Yu ◽  
Meng Jun Ye ◽  
Lian Xin Li
Keyword(s):  
Temperature Field ◽  
High Speed ◽  
Theoretical Data ◽  
Element Model ◽  
Field Analysis ◽  
Systematic Research ◽  
High Speed Railway ◽  
Ballastless Track ◽  
Cushion Layer ◽  
Ca Mortar

As an important cushion layer, CA mortar ballastless track is crucial to the durability, safety of high-speed railway and the high-speed railway is influenced by the external environment. The regulation of temperature field evolvement of ballastless track is analyzed in this paper through a two-dimensional, transient finite element model built by ANSYS. The results show that the temperature of structure section caused by solar radiation and circumstances temperature is decreasing along depth in sunlight, and the internal temperature of structure is higher than the surface temperature at night. The integral temperature field of structure reaches the maximum at 1:00 p.m. and the vertical difference of the temperature inside the structure is also the largest, causing the most obvious temperature stress, which provides theoretical data for systematic research on ballastless track of high-speed railway.

scholarly journals Heat Transfer and Thermal Deformation Characteristics of Liquid-Cooled Laser Mirror

2014 ◽  
Vol 6 ◽  
pp. 749065 ◽  
Author(s):  
Panpan Hu ◽  
Haihong Zhu ◽  
Chongwen He ◽  
Xiaoming Ren
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Fluid Flow ◽  
Finite Volume ◽  
Thermal Deformation ◽  
Numerical Models ◽  
Element Model ◽  
Flow And Heat Transfer ◽  
Finite Volume Element ◽  
Transient Thermal

A coupled finite volume-element method is developed to simulate the transient thermal deformation of water-cooled mirror by considering fluid flow and convective heat transfer. The simulation process consists of two steps: the 3D finite volume models of fluid flow and heat transfer equation are solved to obtain the time-dependent temperature field by using CFD; then, the obtained temperature field used as final temperature field is unidirectionally coupled to the finite element model for solving the thermoplastic equation. It is concluded that fluid flow not only affects the magnitude of temperature rise and thermal deformation, but also affects the distribution of temperature and thermal deformation. The temperature gradient in the thickness direction ( z direction) is found to be much larger than that in transverse direction. It is found that the temperature and the consequent deformation of water-cooled mirror increase significantly in the first seconds and gradually become steady state in the subsequent time. Experiments are conducted to estimate the precision of numerical models, and the experimental results agree well with the simulated results.

Temperature Field Analysis on Cooling Stave Material and Stave Body

2011 ◽  
Vol 130-134 ◽  
pp. 931-934
Author(s):  
Fang Wei ◽  
Jiang Chang
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Blast Furnace ◽  
Structure Design ◽  
Field Analysis ◽  
Temperature Fields ◽  
Temperature Field Distribution ◽  
The Relationship ◽  
Account Temperature ◽  
General Method

The cooling stave longevity is the most important factor to affect the blast furnace life. In this paper the cooling stave model was built by use of software ANSYS. With boundary conditions of heat transfer of cooling stave fully taken into account, temperature fields of cooling stave made of different materials are analyzed. The analysis results showed the relationship between the different cooling stave materials and temperature field distribution of stave body. A general method of selecting cooling stave material and structure design for longevity design of cooling stave was developed.

Sign in / Sign up

Export Citation Format

Share Document