Simulation and Experimental Studies on the Temperature Field of a Wet Shift Clutch during One Engagement

2009 ◽  
Author(s):  
Jin-le Zhang ◽  
Biao Ma ◽  
Ying-Feng Zhang ◽  
He-Yan Li
Keyword(s):  
Temperature Field ◽  
Experimental Studies ◽  
Shift Clutch

Exploration on Grinding Temperature Field Based on Water Vapor Cooling

2013 ◽  
Vol 820 ◽  
pp. 170-174
Author(s):  
Li Gang Zhao ◽  
Qing Ming Ding ◽  
Jia Long Ren
Keyword(s):  
Temperature Field ◽  
Water Vapor ◽  
Experimental Studies ◽  
Test Methods ◽  
Grinding Temperature ◽  
Machined Surface ◽  
Ansys Simulation ◽  
Dry Grinding ◽  
Grinding Temperature Field ◽  
Zone Temperature

To explore the influence of the water vapor cooling conditions on grinding temperature field of titanium alloy TC4 material, ANSYS simulation and test methods are adopted in this paper. Simulation and experimental studies show that: water vapor as coolant can reduce the surface temperature of the workpiece quickly by changing the wheel speed, workpiece speed and cutting depth; Water vapor cooling can control the grinding zone temperature below 400 °C on certain conditions, and compared with dry grinding it can reduce more than 50%; The grinding zone temperature can significantly be reduced by optimizing the grinding process parameters and improving the quality of the machined surface.

FEM simulations and experimental studies of the temperature field in a large diamond crystal growth cell

2013 ◽  
Vol 22 (1) ◽  
pp. 014701 ◽  
Author(s):  
Zhan-Chang Li ◽  
Xiao-Peng Jia ◽  
Guo-Feng Huang ◽  
Mei-Hua Hu ◽  
Yong Li ◽  
...  
Keyword(s):  
Temperature Field ◽  
Crystal Growth ◽  
Diamond Crystal ◽  
Experimental Studies ◽  
Fem Simulations ◽  
Large Diamond

Investigation of Temperature Distribution in High-Speed End Mill Assisted by Heat Pipe Cooling

2011 ◽  
Vol 418-420 ◽  
pp. 1154-1157
Author(s):  
Qing Hua Song ◽  
Hua Wei Ju ◽  
Wei Xiao Tang
Keyword(s):  
Experimental Study ◽  
Temperature Field ◽  
Heat Pipe ◽  
High Speed ◽  
Experimental Studies ◽  
Solid Cylinder ◽  
End Mill ◽  
Milling Operations ◽  
Cylinder Model ◽  
Pipe Mill

A combined numerical and experimental study is performed to analyze the feasibility of using heat pipe cooling in milling applications. In this model, it is assumed that the end mill is subjected to a static heat source which verifies the analysis and feasibility of using heat pipe cooling in milling operations. The performance of heat pipe mill model is approximated using a solid cylinder model of pure conduction. Both the numerical and experimental studies show that the use of a heat pipe in a mill can reduce the temperature field significantly.

scholarly journals RESEARCH OF THE TEMPERATURE CONDITION OF THE GAS GENERATOR OF SOLID PROPELLANT AT THE STAND TEST BY THE METHOD OF THERMAL IMAGING

2020 ◽  
pp. 26-33
Author(s):  
Roman Mormul ◽  
◽  
Sergey Merzlyakov ◽  
Keyword(s):  
Temperature Field ◽  
Experimental Design ◽  
Thermal Imaging ◽  
Solid Propellant ◽  
Thermal State ◽  
Experimental Studies ◽  
Operating Characteristics ◽  
Gas Generator ◽  
Rocket Motors ◽  
Emergency Rescue

In this article, the authors described in detail the methodology for conducting fire bench tests for the reusable experimental design of a solid propellant (SP) gas generator, specially designed to study the complex laws of heat and mass transfer under conditions of unsteady combustion of SP during operation of the installation and in the after-treatment mode. The developed technique allows us to study the nonlinear dynamics of temperature field changes, fuel and generator gas consumption, as well as its composition. The paper presents the chronology of the research, describes the used measuring equipment. Based on the carried out thermodynamic analysis of working processes in the combustion chamber of the gas generator under study, an algorithm for the optimal determination of its operating characteristics is proposed. The methodology of experimental studies of the thermal state of the design of the TT gas generator is universal and can be successfully used in working out other gas generating solid fuels with various energy characteristics during the optimal design of special technical systems such as solid propellant rocket motors (the approbation of the methodology is given on the example of an experimental design with a rotating nozzle), emergency rescue systems and aircraft engines. The results of studies of the thermal state of the elements of the TT gas generator by thermal imaging are well verified with the readings of temperature field sensors.

Study of Heat Transfer Control with Magnetic Field Using Higher Order Finite Difference Scheme

2016 ◽  
Vol 8 (3) ◽  
pp. 449-463 ◽  
Author(s):  
R. Sivakumar ◽  
S. Vimala ◽  
S. Damodaran ◽  
T. V. S. Sekhar
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Nusselt Number ◽  
Temperature Field ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Experimental Studies ◽  
Higher Order ◽  
Polar Coordinates ◽  
Cylindrical Polar Coordinates

Abstract.The control of convective heat transfer from a heated circular cylinder immersed in an electrically conducting fluid is achieved using an externally imposed magnetic field. A Higher Order Compact Scheme (HOCS) is used to solve the governing energy equation in cylindrical polar coordinates. The HOCS gives fourth order accurate results for the temperature field. The behavior of local Nusselt number, mean Nusselt number and temperature field due to variation in the aligned magnetic field is evaluated for the parameters 5≤Re≤40, 0≤N≤20 and 0.065≤Pr≤7. It is found that the convective heat transfer is suppressed by increasing the strength of the imposed magnetic field until a critical value of N, the interaction parameter, beyond which the heat transfer increases with further increase in N. The results are found to be in good agreement with recent experimental studies.

scholarly journals A theoretical study of biological membrane response to temperature gradients at the single-cell level

2014 ◽  
Vol 11 (95) ◽  
pp. 20131207 ◽  
Author(s):  
Lior Atia ◽  
Sefi Givli
Keyword(s):  
Temperature Field ◽  
Single Cell ◽  
Biological Membrane ◽  
Experimental Studies ◽  
Temperature Gradients ◽  
Phase Behaviour ◽  
Single Cell Level ◽  
Cell Level ◽  
Exciting Field ◽  
Lipid Mixture

Recent experimental studies provide evidence for the existence of a spatially non-uniform temperature field in living cells and in particular in their plasma membrane. These findings have led to the development of a new and exciting field: thermal biology at the single-cell level. Here, we examine theoretically a specific aspect of this field, i.e. how temperature gradients at the single-cell level affect the phase behaviour and geometry of heterogeneous membranes. We address this issue by using the Onsager reciprocal relations combined with a simple model for a binary lipid mixture. We demonstrate that even small temperature variations along the membrane may introduce intriguing phenomena, such as phase separation above the critical temperature and unusual shape response. These results also suggest that the shape of a membrane can be manipulated by dynamically controlling the temperature field in its vicinity. The effects of intramembranous temperature gradients have never been studied experimentally. Thus, the predictions of the current contribution are of a somewhat speculative nature. Experimental verification of these results could mark the beginning of a new line of research in the field of biological membranes. We report our findings with the hope of inspiring others to perform such experiments.

scholarly journals VERIFICATION RESULTS OF THE PRESENTATION OF THE PROTECTION OF THE UNSTEADING TEMPERATURE FIELD AT THE CONCRETE CONSTRUCTION FOR THE MIND OF THESTANDARD TEMPERATURE REFRIGERATION FIRE

2018 ◽  
pp. 96-101 ◽  
Author(s):  
O. Pazen
Keyword(s):  
Temperature Field ◽  
Experimental Research ◽  
Fire Resistance ◽  
Concrete Structure ◽  
Experimental Studies ◽  
Alternative Methods ◽  
Building Structures ◽  
Fire Tests ◽  
Stationary Temperature Field ◽  
The Phoenix

The main classification indicator, in terms of fire safety, is the degree of fire resistance of the house. Depending on this indicator normalize its surface, the area of development and distance to other buildings and structures. The degree of fire resistance of the house is determined by the limit of fire resistance of its building structures and the limit of the fire spread by these structures. Therefore, the value of the fire resistance limit of building constructions, which consists of a house, significantly affect its architectural solution and the parameters of construction in general. On this basis, taking into account the approaches to ensuring normalized fire resistance limits of the design and the features of their behavior under high-temperature (fire) influence is very relevant. Most research on building constructions is based on two methods of determining the limit of fire resistance - experimental and analytical. The first one is to determine the limit of fire resistance on the basis of experimental research, and the second one is based on methods of analytical or computational and experimental research. In most countries, the experimental determination of fire resistance of building structures is carried out by means of fire tests. However, experimental studies require significant financial costs and high accuracy of fire tests. The alternative methods for assessing the fire resistance of building elements on the basis of field fire tests are the design methods used for the design of fire-resistant building constructions. In the article, the verification of the results of analytical studies on the propagation of the non-stationary temperature field in the concrete structure under the conditions of the influence of the standard temperature regime of the fire in comparison with the results of field fire tests has been carried out. The analysis of the obtained results shows that the results of the calculation of the distribution of the non-stationary temperature field in the thickness of the concrete structure without coating and with the applied flame retardant coating of the Phoenix STV, manufactured by the company "A + B Ukraine" on the front of the Phoenix Contact, obtained using mathematical models, are qualitatively and quantitatively convergent with results obtained experimentally. The difference between the theoretical and experimental data for a concrete structure without coating is 4%, and with the applied fire-retardant coating does not exceed 10%.

Sign in / Sign up

Export Citation Format

Share Document