Temperature distribution in nonlinear multilayer structures with several heat sources

1977 ◽  
Vol 4 (2) ◽  
pp. 149-154 ◽  
Author(s):  
A. Silard ◽  
M. Bodea ◽  
M. Luca ◽  
M. Liţǎ ◽  
N. Iosif
Keyword(s):  
Temperature Distribution ◽  
Multilayer Structures ◽  
Heat Sources

A Generalized Function in Heat Conductivity Problems for Multilayer Structures with Heat Sources

2018 ◽  
Vol 47 (3) ◽  
pp. 249-255 ◽  
Author(s):  
A. V. Eremin ◽  
E. V. Stefanyuk ◽  
O. Yu. Kurganova ◽  
V. K. Tkachev ◽  
M. P. Skvortsova
Keyword(s):  
Heat Conductivity ◽  
Multilayer Structures ◽  
Generalized Function ◽  
Heat Sources

scholarly journals Multifunctional Textile Platform for Fiber Optic Wearable Temperature-Monitoring Application

Micromachines ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 866 ◽  
Author(s):  
Ziyang Xiang ◽  
Liuwei Wan ◽  
Zidan Gong ◽  
Zhuxin Zhou ◽  
Zhengyi Ma ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Wavelength Shift ◽  
Heat Sources ◽  
Time Dynamic ◽  
Textile Sensor ◽  
Fbg Sensors ◽  
Comfort Parameters ◽  
Monitoring Application

Wearable sensing technologies have been developed rapidly in the last decades for physiological and biomechanical signal monitoring. Much attention has been paid to functions of wearable applications, but comfort parameters have been overlooked. This research presents a developed fabric temperature sensor by adopting fiber Bragg grating (FBG) sensors and processing via a textile platform. This FBG-based quasi-distributed sensing system demonstrated a sensitivity of 10.61 ± 0.08 pm/°C with high stability in various temperature environments. No obvious wavelength shift occurred under the curvatures varying from 0 to 50.48 m−1 and in different integration methods with textiles. The temperature distribution monitored by the developed textile sensor in a complex environment with multiple heat sources was deduced using MATLAB to present a real-time dynamic temperature distribution in the wearing environment. This novel fabric temperature sensor shows high sensitivity, stability, and usability with comfort textile properties that are of great potential in wearable applications.

scholarly journals Computer Application for Simulation of Temperature Distribution Inside the Room

2018 ◽  
Vol 210 ◽  
pp. 04036
Author(s):  
Hana Charvátová ◽  
Martin Zálešák
Keyword(s):  
Spatial Distribution ◽  
User Interface ◽  
Temperature Distribution ◽  
Heat Input ◽  
Computer Application ◽  
Comsol Multiphysics ◽  
Heat Sources ◽  
Cyclic Heating ◽  
Heating And Cooling ◽  
Computer Testing

The paper deals with computer testing of the temperature distribution in buildings by using COMSOL Multiphysics software. It is devoted to a description of a computer application created in the Application Builder user interface for simulation of the temperature distribution in a room heated by two heat sources. The application allows you to change geometric dimensions of all elements of the studied model and their spatial distribution, as well as a choice of physical properties needed to access the distribution of temperature in the room depending on the ambient temperature and the heat input of the considered sources. Main functions of the application are presented by simulation of cyclic heating and cooling of the tested room.

Analytical Thermal Models of Oblique Moving Heat Source for Deep Grinding and Cutting

2000 ◽  
Vol 123 (2) ◽  
pp. 185-190 ◽  
Author(s):  
T. Jin ◽  
G. Q. Cai
Keyword(s):  
Temperature Distribution ◽  
Heat Source ◽  
High Efficiency ◽  
Orthogonal Cutting ◽  
Heat Sources ◽  
Thermal Models ◽  
Creep Feed ◽  
Moving Direction ◽  
Transfer Problems ◽  
Zone Temperature

Three related analytical thermal models of plane heat source moving obliquely along the surface of a semi-infinite solid are presented. The temperature distribution of grinding zone under deep-cut conditions is investigated with these models. It is proposed that the oblique angle of the heat source plane to its moving direction has an essential influence on the grinding zone temperature rise and its distribution of high efficiency deep grinding (HEDG). Compared with that in creep-feed grinding, HEDG has a different form of heat flux distribution in grinding zone and should be treated with different thermal models. The temperature distribution at the shear zone of orthogonal cutting is also briefly discussed with the thermal models. The models developed in the paper provide a more rational and integrated analytical basis for dealing with the heat transfer problems of inclined moving heat sources.

Correlation of Tempering Effects With Temperature Distribution in Steel Cutting Tools

1978 ◽  
Vol 100 (2) ◽  
pp. 131-136 ◽  
Author(s):  
P. K. Wright
Keyword(s):  
Temperature Distribution ◽  
Pure Copper ◽  
Cutting Tools ◽  
Experimental Methods ◽  
Heat Sources ◽  
Low Carbon ◽  
Commercially Pure ◽  
Commercially Pure Copper ◽  
Cutting Speeds ◽  
Steel Cutting

Experimental methods are described for determining the temperature distribution in steel cutting tools over the range 150 C to 1000 C. The techniques correlate temperature with changes in microstructure and hardness that arise due to the heat conducted into the tool. Results are presented for the machining of low carbon iron and commercially pure copper, and the effectiveness of cutting coolant is evaluated for a range of cutting speeds and for two different methods of application. Simple models for the heat sources in chip formation are derived and used to verify the experimental work by calculating the temperatures on the rake face.

Investigation on temperature distribution in form grinding of 9Mn2V thread gauge

2017 ◽  
Vol 232 (8) ◽  
pp. 1342-1350 ◽  
Author(s):  
Kunxian Qiu ◽  
Guoqiang Guo ◽  
Changqi Yang ◽  
Dapeng Dong ◽  
Ming Chen
Keyword(s):  
Temperature Distribution ◽  
Temperature Rise ◽  
Heat Transfer Process ◽  
Distribution Model ◽  
Heat Sources ◽  
Partition Model ◽  
Form Grinding ◽  
Infrared Imager ◽  
Grinding Conditions ◽  
The Impact

Accurate simulation about the grinding temperature distribution helps to decrease the thermal damage and microcracks during the grinding process. In this article, the grinding heat transfer process of form grinding was analyzed and a temperature distribution model was derived in form grinding of 9Mn2V thread gauge. Considering the characteristics of form grinding, the temperature rise of the intersection region can be affected by two kinds of heat sources, and the impact between the two heat sources has been investigated. Also, the influence of the grinding depth on the temperature rise was analyzed. Depending on the analysis, an improved heat partition model has been derived, which is based on single-grain energy partition model. A series of experiments were carried out to investigate the grinding performance of 9Mn2V. The grinding force was obtained, the specific grinding energy was discussed, and the experimental temperature was measured by infrared imager. It is shown that the experiment results correspond well to the theoretical temperature calculated by the prediction model. This temperature model can be used to optimize the grinding conditions and the critical depth in form grinding of 9Mn2V thread gauge.

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