Numerical Investigation of the Temperature Field of Freeze-proof Separate Lining in a Cold - region Tunnel

2015 ◽  
Vol 9 (4) ◽  
pp. 499-511
Author(s):  
J Lai ◽  
◽  
H Fan ◽  
W DONG ◽  
Q Liu ◽  
...  
Keyword(s):  
Temperature Field ◽  
Numerical Investigation ◽  
Cold Region

Numerical investigation of the temperature field and thermal insulation design of cold-region tunnels considering airflow effect

2021 ◽  
pp. 116923
Author(s):  
Taishan Lu ◽  
Guozhu Zhang ◽  
Songyu Liu ◽  
Bo Zheng ◽  
Xiang Zhang
Keyword(s):  
Temperature Field ◽  
Numerical Investigation ◽  
Thermal Insulation ◽  
Cold Region

scholarly journals Numerical Investigation of Heat-Insulating Layers in a Cold Region Tunnel, Taking into Account Airflow and Heat Transfer

2017 ◽  
Vol 7 (7) ◽  
pp. 679 ◽  
Author(s):  
Qixiang Yan ◽  
Binjia Li ◽  
Yanyang Zhang ◽  
Jian Yan ◽  
Chuan Zhang
Keyword(s):  
Heat Transfer ◽  
Numerical Investigation ◽  
Cold Region

scholarly journals Temperature Field Analysis of Electric Tracing for Pavement of Tunnel Portal in Cold-region by FEM

2011 ◽  
Vol 15 ◽  
pp. 5468-5472 ◽  
Author(s):  
Jinxing Lai ◽  
Chi Liu ◽  
Chengbing Gong
Keyword(s):  
Temperature Field ◽  
Field Analysis ◽  
Cold Region ◽  
Tunnel Portal

Numerical Investigation on Leading Edge of Film Cooling Blade with Different Turbulence and Blowing Ratios

2014 ◽  
Vol 1070-1072 ◽  
pp. 1731-1734
Author(s):  
Shao Hua Li ◽  
Ge Wu ◽  
Ling Zhang
Keyword(s):  
Temperature Field ◽  
Numerical Investigation ◽  
Turbulence Intensity ◽  
Film Cooling ◽  
Leading Edge ◽  
Cooling Efficiency ◽  
Simulated Temperature

In order to investigate the influence of cooling efficiency of leading edge of film cooling blade with different turbulence intensity and blowing ratios,which use method of N-S equation,various blowing ratios of 1.0、1.5 and 2.0,various turbulence intensity of 5%、12%、20% and 30%,it simulated temperature field in leading edge of film cooling blade.The results show: cooling efficiency decreased when blowing ratios is increased.When turbulence intensity is 5%、12% and 20%,it obtains maximum cooling efficiency blowing ratios of 1.0.When turbulence intensity is 30%,it obtains maximum cooling efficiency blowing ratios of 1.5. In blowing ratios of 1.0,cooling efficiency decreased when turbulence increased.But in blowing ratios of 1.5 and 2.0,cooling efficiency increased when turbulence increased.

scholarly journals Calculation of Soil Natural Temperature Field in Cold Region and Analysis of Influencing Factors

2021 ◽  
Author(s):  
Lantian Yang ◽  
Pengli Ge ◽  
Yanyan Xu ◽  
Guangwen Zeng ◽  
Qingshan Liu ◽  
...  
Keyword(s):  
Temperature Field ◽  
Influencing Factors ◽  
Cold Region ◽  
Natural Temperature

Temperature field characteristics and influencing factors on frost depth of a highway tunnel in a cold region

2020 ◽  
Vol 179 ◽  
pp. 103141
Author(s):  
Xin Zhao ◽  
Hongwei Zhang ◽  
Hongpeng Lai ◽  
Xiaohua Yang ◽  
Xueying Wang ◽  
...  
Keyword(s):  
Temperature Field ◽  
Influencing Factors ◽  
Cold Region ◽  
Highway Tunnel ◽  
Frost Depth

Numerical Investigation of Thermal Effects on a HAMR Head-Disk Interface

2014 ◽  
Author(s):  
Kyaw Sett Myo ◽  
Weidong Zhou ◽  
Xiaoyang Huang ◽  
Shengkai Yu
Keyword(s):  
Temperature Field ◽  
Laser Beam ◽  
Numerical Investigation ◽  
Thermal Effects ◽  
Hard Disk ◽  
Disk Surface ◽  
Recording Media ◽  
Head Disk Interface ◽  
Disk Interface ◽  
High Density Recording

Heat-assisted magnetic recording (HAMR) is one of prospective high density recording technologies in current hard disk industry. It requires heating a spot on the recording media with the laser beam to overcome the superpara-magnetic limit. The heat produced by laser beam causes the temperature field on the hard disk surface to be highly non-uniform, which may lead to unexpectedly severe lubricant loss, or even the failure of the whole HAMR system. In the meantime, the heat loss caused by the optical delivery system may cause unwanted thermal protrusion on the slider body, which may affect slider’s flying stability in the end.

Numerical Investigation of Thermal Characteristics in a Solar Chimney Project

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Hongtao Xu ◽  
Fariborz Karimi ◽  
Mo Yang
Keyword(s):  
Temperature Field ◽  
Numerical Investigation ◽  
Thermal Characteristics ◽  
Soil Surface ◽  
Solar Chimney ◽  
Simulation Methodology ◽  
Plant Cultivation ◽  
Soil Surface Temperature ◽  
Lower Temperature ◽  
Heat Amount

In order to create interior multiclimate zones suitable for plant cultivation in a solar chimney project proposed for the World Horticultural Exposition 2016 in China, the numerical investigation is performed to a solar chimney with 2 km radius and 1 km height. The simulation methodology is validated by experimental data. The impacts of inlet height and radius to interior thermal characteristics are evaluated. It is found that the temperature field is much similar when the inlet height decreases from 3.8 m to 0.5 m. With further decrease of the inlet height to 0.2 m, its impact to temperature field is significant. The temperature field is similar though the radius of solar chimney decreases from 2.0 km to 1.725 km. Further decrease to 1.13 km results in much lower temperature field as less radiate heat is obtained. The procedure of soil surface temperature calculation is also proposed to obtain the supplementary heat amount maintaining the required temperature for plant cultivation.

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