scholarly journals Analisys of thermal processes during induction surfacing

2020 ◽  
pp. 60-63
Author(s):  
E. I. Marukovich ◽  
V. A. Kharkov ◽  
D. A. Meshkov ◽  
A. M. Kovalev ◽  
I. O. Sazonenko ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Thermal Resistance ◽  
Production Process ◽  
Eddy Currents ◽  
Heated Layer ◽  
Thermal Processes ◽  
Heat Distribution ◽  
Heated Body ◽  
Thermal Phenomena ◽  
Penetration Depths

Aspects of thermal phenomena associated with the production process of bimetallic billets in conditions of small penetration depths of eddy currents compared to the size of the heated body are considered. Various conditions of heat distribution in the heated layer and its removal are modeled using differentiated thermal resistance. Based on the analysis of the temperature distribution in various situational variants, promising ways to improve this technology are identified.

Temperaturverteilung beim Wälzschälen/Temperature distribution during power skiving

2021 ◽  
Vol 111 (11-12) ◽  
pp. 786-791
Author(s):  
Florian Sauer ◽  
Michael Gerstenmeyer ◽  
Volker Schulze
Keyword(s):  
Temperature Distribution ◽  
Wear Mechanisms ◽  
Experimental Temperature ◽  
Heat Distribution ◽  
Temperature Analysis ◽  
Power Skiving ◽  
Underlying Mechanisms

Innenverzahnungen, die aufgrund der Elektromobilität zunehmend im Fokus stehen, lassen sich mithilfe des Wälzschälens produktiv herstellen. Um diese Produktivität weiter zu steigern, müssen die wirkenden Verschleißmechanismen untersucht und verstanden werden. Der Beitrag behandelt die experimentelle Temperaturuntersuchung des Wälzschälens mit anschließender Modellierung der Wärmeverteilung, welche als erster Schritt zum Mechanismenverständnis angesehen werden kann.   Internal gears, which are increasingly in focus due to electromobility, can be manufactured productively with the help of power skiving. In order to further increase the productivity, the wear mechanisms have to be investigated and understood. This paper discusses the experimental temperature analysis of power skiving by subsequently modelling the heat distribution. This process can be seen as a first step towards understanding the underlying mechanisms.

scholarly journals TWO APPROACHES TO THE COMPUTATION OF ELECTROTHERMAL PROCESSES AT INDUCTION HEATING OF MOVING INGOTS – BY FIELD THEORY AND THERMAL CIRCUIT THEORY

2021 ◽  
Vol 2021 (59) ◽  
pp. 5-10
Author(s):  
A.A. Shcherba ◽  
◽  
A.D. Podoltsev ◽  
I.M. Kucheriava ◽  
V.M. Zolotarev ◽  
...  
Keyword(s):  
Field Theory ◽  
Heat Transfer ◽  
Temperature Distribution ◽  
Induction Heating ◽  
Thermal Field ◽  
Circuit Theory ◽  
Thermal Processes ◽  
Computational Results ◽  
Thermal Circuit ◽  
Good Agreement

The model for the computation of thermal processes in induction heating installations with moving ingots is developed using equivalent thermal circuits. The controlled current sources as additional elements in the model are used to take into account the convective heat transfer along the moving ingot. The model is implemented in the program Matlab/Simulink and makes it possible to determine the temperature distribution along the ingot under steady-state heating conditions. The results are compared with data obtained by the alternative method which is based on the electromagnetic and thermal field theory and realized in the Comsol program. As shown the computational results by two methods concerning the temperature distribution along the ingot are in good agreement. The existing advantages and shortcomings of the used approaches are discussed. Ref. 8, fig. 3, table.

Piston-Liner Thermal Resistance Model for Diesel Engine Simulation: Part 2: Application to various Insulation Schemes

1991 ◽  
Vol 205 (5) ◽  
pp. 353-361 ◽  
Author(s):  
Y Rasihhan ◽  
F J Wallace
Keyword(s):  
Diesel Engine ◽  
Temperature Distribution ◽  
Thermal Resistance ◽  
Heat Fluxes ◽  
Engine Simulation ◽  
Resistance Model

The piston-liner thermal resistance model, developed in Part 1, is applied to various piston and/or liner insulation schemes. The effects of insulation on piston-liner conduction and gas to wall heat fluxes and liner temperature distribution are examined. The small effect of insulation of the middle and lower parts of the liner is clearly shown.

scholarly journals Post Fire Transient Temperature Distribution in Drum Type Packages

2006 ◽  
Author(s):  
Allen C. Smith
Keyword(s):  
Temperature Distribution ◽  
Thermal Resistance ◽  
Heat Generation ◽  
Thermal Response ◽  
Internal Resistance ◽  
Peak Temperature ◽  
Transient Temperature ◽  
Containment Vessel ◽  
Transient Temperature Distribution ◽  
Parametric Studies

This study investigates the temperature distribution in an idealized cylindrical package subjected to the HAC Fire transient. Cases for several common overpack materials, with thermal conductivity spanning two orders of magnitude, are considered. The results show that the interior temperature distribution and maximum interior temperature are determined by the heat generation of the contents and the thermal resistance of the package materials. Heat generation has a dominant effect on the peak temperature in the center (containment vessel region) of the package, when the internal thermal resistance is high. For cases where the internal resistance is low, heat conducted into the interior during the fire determines the peak temperature in the center, containment vessel region. The thermal wave effect, where the interior temperature continues to rise after the end of the fire exposure, is present in all cases. The study complements the parametric studies of effects of thermal properties on thermal response of packages which were previously reported.

scholarly journals The Effects of Absorbing Materials on the Homogeneity of Composite Heating by Microwave Radiation

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7362
Author(s):  
Betime Nuhiji ◽  
Matthew P. Bower ◽  
William A. E. Proud ◽  
Steven J. Burpo ◽  
Richard J. Day ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Temperature Distribution ◽  
Electromagnetic Radiation ◽  
Heat Distribution ◽  
Temperature Uniformity ◽  
Geometric Complexity ◽  
Uniform Temperature ◽  
Better Regulation ◽  
Absorbing Materials ◽  
Complexity Increase

When cured in a microwave, flat thin composite panels can experience even heat distribution throughout the laminate. However, as load and geometric complexity increase, the electromagnetic field and resulting heat distribution is altered, making it difficult to cure the composite homogeneously. Materials that absorb and/or reflect incident electromagnetic radiation have the potential to influence how the field behaves, and therefore to tailor and improve the uniformity of heat distribution. In this study, an absorber was applied to a composite with non-uniform geometry to increase heating in the location which had previously been the coldest position, transforming it into the hottest. Although this result overshot the desired outcome of temperature uniformity, it shows the potential of absorbing materials to radically change the temperature distribution, demonstrating that with better regulation of the absorbing effect, a uniform temperature distribution is possible even in non-uniform composite geometries.

Investigation of the Effect of Different Materials on Uniform Heat Distribution Over a Solar Collector Pipe

2020 ◽  
Vol 17 (5) ◽  
pp. 2021-2023
Author(s):  
V. Sriram ◽  
B. Kanimozhi
Keyword(s):  
Temperature Distribution ◽  
Power Plant ◽  
Solar Collector ◽  
Nuclear Power ◽  
Turbine Blades ◽  
Heat Distribution ◽  
Uniform Temperature ◽  
Uniform Heat ◽  
Solar Radiation Incident ◽  
Copper Aluminum

Collector pipe used in solar power plant is a device for converting water from ambient temperature to the raised temperature which in turn used to rotate turbine blades. The raise in temperature is not that much when compared to thermal or nuclear power plant, so researches are going on for improving the heat carrying capacity of collector pipes. The productivity in pipe directly depends on the factors such as solar radiation incident on it, temperature distribution over the pipe, surrounding temperature, material of the pipeline used, and thickness of the pipe. When comparing to all of such parameters, the temperature distribution over the pipe is the main parameter which determines the performance of the collector pipe. For a particular type of solar collector pipe, the temperature distribution is function of length with day variation of solar incidence over it. In this work a collector pipe of length 2.2 m and 7 cm diameter is fabricated and tested under standard laboratory conditions for the uniform heat dissemination over the pipe. For keeping up the uniform temperature over the collector pipe, it is necessary to wound the pipe with metals like copper, aluminum. The results show that the heat distribution over the pipe is increased in case of copper when compared with aluminium.

scholarly journals Wavelength Width Dependence of Cavity Temperature Distribution in Semiconductor Diode Laser

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
S. P. Abbasi ◽  
A. Alimorady
Keyword(s):  
Temperature Distribution ◽  
Laser Diode ◽  
Cavity Length ◽  
Semiconductor Diode ◽  
Heat Distribution ◽  
Nonuniform Temperature ◽  
Output Wavelength ◽  
Semiconductor Diode Laser ◽  
Experimental Test Result ◽  
Test Result

The study of heat distribution in laser diode shows that there is nonuniform temperature distribution in cavity length of laser diode. In this paper, we investigate the temperature difference in laser diode cavity length and its effect on laser bar output wavelength width that mounted on usual CS model. In this survey at the first, laser was simulated then the simulations result was compared with experimental test result. The result shows that for each emitter there is difference, about 2.5 degree between the beginning and end of cavity.

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