A Comparison of Numerical Simulation and Scheme for Hull Painting Plant Ventilation Airflow

2013 ◽  
Vol 353-356 ◽  
pp. 3691-3694
Author(s):  
Shao Wen Shang ◽  
He Feng Wang ◽  
Xing Yu Lu
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Temperature Field ◽  
Wind Speed ◽  
Model Theory ◽  
Thermal Environment ◽  
Air Distribution ◽  
Air Volume ◽  
Suitable Environment

The STAR-CCM+ technology is also used to analyze the location and number of vents in hull coating plant in the case of constant air volume. By means of numerical simulation and mathematical model theory, this paper makes a comparison of air distribution in the working area of this plant, and found the interior velocity and temperature field vary with different location and number of vents. Specifically speaking, the lower position and improper number of vents can lead to unevenness of the internal thermal environment and imbalance of wind speed in the working area. This study provides simulated basis and technical references for the better coating operations in suitable environment, which is significant for putting forward the improvement, optimizing the quality of the coating operation and saving energy.

Numerical Simulation on Mold Electromagnetic Eccentric Stirring and Central Segregation of Round Bloom

2013 ◽  
Vol 652-654 ◽  
pp. 2450-2454
Author(s):  
Zhi Hong Zhang ◽  
Guo Guang Cheng
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Electromagnetic Stirring ◽  
Center Line ◽  
Central Segregation

The paper describes multi-section round bloom casting using external MEMS, equipped with max section D600mm and min D280mm mold, the center line of D280mm mold not coincident with the axis of stirrer coils. it is exist eccentric electromagnetic stirring of mold which section less than max D600mm, a mathematical model of MEMS has been established, the index of central segregation of D280mm macrostructure had decreased less than 1.12 by optimized parameters of electromagnetic stirring and SEN immerse depth, in the end, the quality of round bloom had improved.

Application of Environmental Rubber in Concrete Road Engineering

2014 ◽  
Vol 989-994 ◽  
pp. 407-411
Author(s):  
Rui Yang
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Radial Strain ◽  
Drainage Tube ◽  
Secondary Development ◽  
Mechanical Parameters ◽  
New Materials ◽  
Road Engineering ◽  
Rubber Concrete

Environmental rubber concrete is a new building material, which can improve the construction quality of road drainage tube in road engineering and achieve effect of keeping warm and radial anti deformation. In order to study the physical properties of environmental rubber concrete, we use methods of experiment and numerical simulation to test mechanical parameters and effect of thermal insulation of concrete. Through the experiment we obtain the relation between ultimate bearing capacity and temperature. We use the software of ANSYS to secondary development on c numerical calculation, and establish a mathematical model of road drainage tube. Through the numerical simulation we get the temperature distribution and the radial strain nephogram of environmental rubber concrete. It provides a new method to study new materials in road engineering.

The Numerical Simulation of Directional Solidification Process Temperature Field for Large-Scale Frustum of a Cone Ingot

2011 ◽  
Vol 189-193 ◽  
pp. 1476-1481
Author(s):  
Kun Liu ◽  
Zhe Wang ◽  
Ren Zhi Han ◽  
Zi Ping Ren
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Temperature Field ◽  
Directional Solidification ◽  
Large Scale ◽  
Solidification Process ◽  
Directional Solidification Process ◽  
Ingot Quality ◽  
Fluent Software ◽  
The Mathematical Model

By using Fluent software, the mathematical model of temperature field is established on directional solidification process for large-scale frustum of a cone ingot, and the result is analyzed by Origin software, Tecplot. The influences of different width/thickness ratio to directional solidification process of cone ingot are discussed in order to provide basis for design optimization and ingot quality improvement.

Transient Numerical Simulation for Air Distribution of Air Conditioning and Ventilation in Subway Island-Platform

2011 ◽  
Vol 250-253 ◽  
pp. 3107-3114
Author(s):  
Hong Ming Fan ◽  
Kai Yuan He ◽  
Zhi Fang Yin ◽  
Dan Zhang
Keyword(s):  
Numerical Simulation ◽  
Air Conditioning ◽  
Thermal Environment ◽  
Ventilation System ◽  
Simulation Method ◽  
Subway Station ◽  
Air Distribution ◽  
Wind Effect ◽  
Piston Effect ◽  
Transient Numerical Simulation

The typical subway island-platform of Beijing as research object was present in the article. Taking two-equation turbulence model and giving boundary conditions of piston wind and train heat load change with the time, adopting numerical method simulates air distribution of air-conditioning and ventilation system in subway. The results indicate that piston wind effect has significant impact on the area of platform entrance and staircase entrance while station with safety doors can obstruct piston effect at a certain degree. Simultaneity, the supply- exhaust air system offers relatively uniform temperature and velocity field, which meets requirements of transitory comfort for passengers. It is found that numerical simulation method can simulate and forecast air distribution of air conditioning and ventilating system in subway station. In conclusion, it can provide the reference for optimizing air-conditioning and ventilation system, improving thermal environment designing of subway station.

Study on the Simulation of Grinding Burn

2012 ◽  
Vol 565 ◽  
pp. 58-63
Author(s):  
Tian Biao Yu ◽  
Cong Li ◽  
Dong Xue Zhang ◽  
Wan Shan Wang
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Theoretical Model ◽  
Processing Method ◽  
Manufacturing Method ◽  
Mechanical Parts ◽  
Grinding Burn ◽  
Grinding Parameters ◽  
Important Processing

Grinding is often used as the final manufacturing method which is an important processing method. Its’ quality of parts surface will directly affect the life and strength of mechanical parts. Therefore, the quality of parts surface in grinding is particularly important to mechanical parts. In this paper, after the simplification of theoretical model of the parts, we can use software such as WORKBENCH and MATLAB to obtain the temperature field of grinding and numerical simulation in case of 45# steel. Subsequently, it also makes use of LS-DYNA to carry out micro-morphology’s simulation in the process of grinding. Then it can significantly verify the previous simulation’s results. We preliminarily obtain the mechanism of the grinding burn on parts surface. It also shows the concrete impact on temperature field with the changing of grinding parameters. Finally we can receive the method to minimize the grinding burn.

Method Research and Practice for Numerical Simulation Analysis of Temperature Field of Hot Runner of Injection Mould

2012 ◽  
Vol 190-191 ◽  
pp. 106-110
Author(s):  
Feng Chen
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Temperature Field ◽  
Simulation Analysis ◽  
Injection Mould ◽  
Research And Practice ◽  
The Mathematical Model

In this article, it is studied how to establish and solve the mathematical model of temperature field of hot runner of injection mould, visual numerical simulation analysis for temperature field is realized with computer, and finally corresponding example is cited.

A sustainable localised air distribution system for enhancing thermal environment and indoor air quality of poultry house for semiarid region

2021 ◽  
Vol 203 ◽  
pp. 70-92
Author(s):  
Douaa K. Al Assaad ◽  
Mohamad S. Orabi ◽  
Nesreen K. Ghaddar ◽  
Kamel F. Ghali ◽  
Darine A. Salam ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Distribution System ◽  
Thermal Environment ◽  
Air Distribution ◽  
Semiarid Region ◽  
Poultry House

Field Measurement and Analysis of the Micro Climate of a Campus Square

2012 ◽  
Vol 610-613 ◽  
pp. 923-927
Author(s):  
Yan Yan Huang ◽  
Shi Chao Deng
Keyword(s):  
Wind Speed ◽  
Public Space ◽  
Thermal Environment ◽  
Environment Design ◽  
Cold Region ◽  
Actual Measurement ◽  
Data Collection And Analysis ◽  
Measurement And Analysis ◽  
Winter Cold

A square is an important multi-functional public space on campus, which can be used as a venue for traffic, gathering, recreational activities and cultural events, and thus the thermal environment of the campus square will directly influence the overall environmental quality of campus. This paper studies a campus square in the summer-hot and winter-cold region, selects typical positions to conduct actual measurement of parameters, such as temperature, relative humidity, wind speed and solar radiation, which indicate the thermal environment. Based on data collection and analysis, it is concluded that the thermal environment of the campus square is affected by microclimate factors such as the square underlying surface properties, vegetation and building and road orientations. This paper is aimed at exploring the regularity of the correlation between microclimate factors and thermal environment in order to facilitate the improvement of the thermal environment of the campus square, make it more comfortable and provide ideas for the landscape and architectural environment design.

Modeling and Simulation of Combustion Chamber

2014 ◽  
Vol 513-517 ◽  
pp. 3543-3547
Author(s):  
Run Ze Duan ◽  
Zhi Ying Chen ◽  
Li Jun Yang
Keyword(s):  
Numerical Simulation ◽  
Optimization Design ◽  
Simulation Software ◽  
Design Parameters ◽  
Air Distribution ◽  
Work Process ◽  
Work Condition ◽  
Oil Fuel ◽  
Fuel Burner

The work process of oil fuel burner consists of atomization and combustion of oil. In this process, different atomization and air-distribution methods would affect the quality of combustion and then bring out problems of life-span of the burner, energy efficiency and environmental pollution. Therefore, in this paper, different air distribution devices and different sizes of nozzles are designed, and the numerical simulation software, Fluent 6.3, was employed to simulate the flow field of different conditions in combustor,. Through the simulation, the best work condition was achieved, which could help to provide optimization design parameters of the combustor.

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