Calculation of thermal physical parameters of dissociated air by the dissociation degree method

2018 ◽  
Vol 39 (7) ◽  
pp. 1045-1056
Author(s):  
Yaopeng Zhao ◽  
Wei Cao
Keyword(s):  
Physical Parameters ◽  
Dissociation Degree ◽  
Thermal Physical Parameters ◽  
Dissociated Air

In Situ Thermal Response Test Methods And Practices

2011 ◽  
Vol 347-353 ◽  
pp. 3087-3092
Author(s):  
Qiang Li ◽  
You Hong Sun ◽  
Xin Fang
Keyword(s):  
High Efficiency ◽  
Thermal Response ◽  
Clean Energy ◽  
Heat Pumps ◽  
Testing Equipment ◽  
Physical Parameters ◽  
Geothermal Wells ◽  
Response Testing ◽  
Thermal Physical Parameters

Abstract. As a high efficiency, low consumption and clean energy, ground source heat pump technology has been pay more and more attention, the number of installation of system is growing rapidly. However, the use of geothermal resources is still extensive at this stage. Effective methods are pure in obtaining thermal physical parameters of geothermal wells around. In-situ thermal response testing is close to the real use of heat pumps, when injecting in or extracting heat from geothermal wells, the testing equipment will collect data, and then thermal physical parameters will be accurately calculate. This paper introduce a thermal response testing equipment, the equipment will add a constant cold or heat to geothermal well, circulating heat flow and pressure data is collected as well as temperature. And then thermal physical parameters of formation and heat exchanging performance are calculated.

scholarly journals Features of measurements the IR radiation power of a laser diode used in active optoelectronic systems for studying flows

2021 ◽  
Vol 2127 (1) ◽  
pp. 012047
Author(s):  
V V Bliznyuk ◽  
V A Parshin ◽  
N S Savinov ◽  
A A Selivanov ◽  
A E Tarasov
Keyword(s):  
Laser Radiation ◽  
Heat Flow ◽  
Radiation Power ◽  
Laser Diodes ◽  
Physical Parameters ◽  
Electronic Systems ◽  
Ir Radiation ◽  
Controlled Source ◽  
Ir Laser ◽  
Thermal Physical Parameters

Abstract In active optical-electronic systems for stream research that regulate thermal-physical parameters of diagnosed stream volume, the controlled source of the heat flow can be acquired by radiation of high-power IR laser diodes into the void. In the current work the peculiarities of measurement of this radiation are considered, specified by its strong divergence. It is shown that the measurements can involve laser wattmeters IMO-4M with planar thermoelectric primary measuring transformers of the laser radiation with a flat receiving site provided.

Simulation of the Solidification Parameters of Single Crystal Casting

2010 ◽  
Vol 638-642 ◽  
pp. 2251-2256 ◽  
Author(s):  
H.P. Jin ◽  
Jia Rong Li ◽  
Shi Zhong Liu
Keyword(s):  
Boundary Conditions ◽  
Mushy Zone ◽  
Single Crystal ◽  
Liquid Interface ◽  
Physical Parameters ◽  
Element Analysis ◽  
Solidification Parameters ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Thermal Physical Parameters

The effects of thermal physical parameters and boundary conditions on investment solidification parameters were obtained using a computer simulation system. Directional solidification parameters of single crystal superalloy include the temperature distribution, the position and the shape of the solid/liquid interface in the mushy zone of the solidifying blade casting. Commercial finite-element analysis software, ProCAST, was used to simulate the solidification processes of the castings of single crystal DD6. The simulation results indicate that the predictions of the temperature show little sensitivity to the thermal physical parameters and boundary conditions. Further, it has also been shown that the location and the shape of solid/liquid interface is related to the boundary conditions of simulation. Increasing the value of interface heat transfer coefficient decreases the width of mushy zone.

Numerical Simulation of Temperature Field of Low Alloyed Bainite Ductile Iron in Austempering

2012 ◽  
Vol 271-272 ◽  
pp. 116-120
Author(s):  
De Qiang Wei ◽  
Yun Qing Zhao ◽  
Rong Wang ◽  
Hu Cheng Chen
Keyword(s):  
Ductile Iron ◽  
Three Dimensional ◽  
Physical Parameters ◽  
Treatment Technology ◽  
Temperature Variations ◽  
Isothermal Temperature ◽  
Dimensional Finite Element ◽  
Cooling Speed ◽  
Three Dimensional Finite Element ◽  
Thermal Physical Parameters

It has an great significance for making heat treatment technology by researching the law of temperature variations of ductile iron in austempering. Based on the three-dimensional finite element method (FEM), the temperature variations of low alloyed bainite ductile iron in austempering are studied in this paper. The temperature relativity of the thermal physical parameters is considered during building the model. The simulation result demonstrates that during the stage of rapid cooling, the cooling speed of the surface is faster than that of the center, and the whole cooling speed increases firstly, then decreases. During the stage of isotherm, the surface temperature of the sample increases to the isothermal temperature directly, while the center temperature decreases firstly, then increases, until to the isothermal temperature.

Numerical Simulation on Temperature Field in Laser Welding for Aluminum Alloy with Different Thickness

2008 ◽  
Vol 575-578 ◽  
pp. 774-779 ◽  
Author(s):  
Yu Shu Rong ◽  
Xiong Jin Hui ◽  
Fan Ding
Keyword(s):  
Aluminum Alloy ◽  
Temperature Field ◽  
Laser Welding ◽  
Heat Of Fusion ◽  
Physical Parameters ◽  
Gauss Function ◽  
Simulation Results ◽  
Solution Accuracy ◽  
Thermal Physical Parameters ◽  
Different Thickness

By using FEA software-ANSYS, distribution of 3D temperature field in laser welding for aluminum alloy with different thickness was simulated. In order to improve solution accuracy and efficiency, the transition mesh was used. In view of the characters of laser welding, a travel heat source combined with Gauss function was designed by analyzing both the temperature relativity of the thermal physical parameters of material latent heat of fusion and the effect of convection radiation and characteristics of different thickness on temperature field. By using high-temperature thermocouple, the temperature field was measured. It is shown that the simulation results are in accordance with the experimental results.

Microstructure and thermal physical parameters of Ni60-Cr3C2 composite coating by laser cladding

2010 ◽  
Vol 25 (6) ◽  
pp. 991-995 ◽  
Author(s):  
Chenggang Pan ◽  
Huachang Wang ◽  
Hongfu Wang ◽  
Qingming Chang ◽  
Huajun Wang
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Physical Parameters ◽  
Thermal Physical Parameters

The Establishment and Application of 316LN Stainless Steel Database for AP1000 Primary Coolant Pipes

2016 ◽  
Vol 850 ◽  
pp. 341-347 ◽  
Author(s):  
Sheng Long Wang ◽  
Bin Yang ◽  
Ming Xian Zhang ◽  
Huan Chun Wu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Kinetic Equations ◽  
Physical Parameters ◽  
Primary Coolant ◽  
Forging Process ◽  
Strain Data ◽  
High Integrity ◽  
Mechanical Properties And Corrosion ◽  
Thermal Physical Parameters

Nuclear grade 316LN austenitic stainless steel (ASS) with an exceptional combination of mechanical properties and corrosion resistance was used to produce AP1000 primary coolant pipe. In order to evaluate the microstructure evolution of the pipe during its forging process, the material database of the 316LN ASS is established with high integrity and reliability. In this paper, the thermal physical parameters, flow stress-strain data and the recrystallization kinetic equations of the 316LN steel are coupled, and the material database is systematically established. Most important, the reliability of the database is verified by an experiment.

Experimental Investigation on Thermal Physical Properties of an Advanced Ferromagnetic Base Composite Material

2012 ◽  
Vol 531 ◽  
pp. 19-22
Author(s):  
Guang Fa Gao ◽  
Shu Jie Yuan ◽  
Yong Chi Li ◽  
Shi Wei Duan
Keyword(s):  
Composite Material ◽  
Physical Properties ◽  
Physical Parameters ◽  
Space Vehicles ◽  
Performance Curves ◽  
Thermodynamic Performance ◽  
Base Composite ◽  
Series Of Experiments ◽  
Thermal Physical Parameters ◽  
Thermal Physical Properties

Ferromagnetic base composite materials were applied widely in aircraft and space vehicles engineering. Aimed to an advanced ferromagnetic base composite material, a series of experiments for thermal physical properties of this material were conducted, and the corresponding performance curves were obtained through statistic analyzing. The experimental results showed good consistency. And then the thermal physical parameters such as thermal expansion coefficient, engineering specific heat and sublimation heat were solved and calculated. This investigation provides an important foundation for the further research on the heat resistance and thermodynamic performance of this material.

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