The new method for modelling of slopes stability at changeable temperature field

2018 ◽  
pp. 547-551
Author(s):  
A. M. Demine ◽  
K.A. Gulakyan
Keyword(s):  
Temperature Field ◽  
New Method

A new method solving the temperature field of concrete around cooling pipes

2013 ◽  
Vol 11 (5) ◽  
pp. 441-462 ◽  
Author(s):  
Zhenyang Zhu ◽  
Sheng Qiang ◽  
Weimin Chen
Keyword(s):  
Temperature Field ◽  
New Method ◽  
Cooling Pipes

Comparison of the Frequency Responses and Time Constants of Mineral Insulated Thermocouples in Sodium and Water

1968 ◽  
Vol 1 (5) ◽  
pp. T100-T104 ◽  
Author(s):  
P. G. Bentley ◽  
R. Rowley
Keyword(s):  
Temperature Field ◽  
Frequency Response ◽  
Room Temperature ◽  
New Method ◽  
Time Constants ◽  
Frequency Responses ◽  
Temperature Water ◽  
Random Temperature Field

Frequency responses of mineral insulated thermocouples are investigated in sodium by a new method which uses a random temperature field generated by the action of turbulence. This forms the basis for a comparison with the frequency response measured in room temperature, water, and the deduction of time constants for the thermocouples in sodium.

Study on Setting the Initial Nodal Temperature on the Joint Face of Concrete Dam

2011 ◽  
Vol 94-96 ◽  
pp. 1596-1600
Author(s):  
You Ping Zhu ◽  
Shou Kai Chen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Field ◽  
Good Accuracy ◽  
New Method ◽  
Three Dimension ◽  
Concrete Dam ◽  
Field Simulation ◽  
Element Method

Because of lacking a rigid method of setting the initial nodal temperature on the joint face, the accuracy of temperature simulation would be affected in concrete dam. Based on finite element method (FEM) and principle of thermal conversation, we validate and extend a new method of setting the initial nodal temperature on the joint face in this paper. The result of temperature field simulation shows that this method has good accuracy in three-dimension temperature field simulation.

scholarly journals Numerical Simulation of Thermal Field in Mass Concrete With Pipe Water Cooling

2021 ◽  
Vol 9 ◽  
Author(s):  
Fuxian Zhu ◽  
Guorong Chen ◽  
Feng Zhang ◽  
Qingwen Li
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Heat Dissipation ◽  
New Method ◽  
Mass Concrete ◽  
Water Cooling ◽  
Water Pipe ◽  
Pipe Water ◽  
Control Equation ◽  
Water Pipe Cooling

Water pipe cooling is mainly used to control temperature in the construction of mass concrete structures. It is important to reveal how to accurately stimulate the temperature field of mass concrete under action of this water pipe cooling. This paper presents a new method for this purpose. In this method, the contact surface of the water pipe and the concrete is used as the heat dissipation surface into the control equation and the composite Multiquadrics radial basis function (MQ-RBF) and low-order linear polynomial combination are used to discrete the spatial domain. The heat dissipation surface of the water pipe is included in the boundary conditions so that there is no need to build the refined water pipe modeling. This new method not only reduces the calculation cost but also ensures calculation accuracy. Through four calculation examples, this paper show that the algorithm has advantages in the numerical simulation of the concrete temperature field with water pipe cooling.

Researches on Dressing Diamond Grinding Wheels on Line by a Diamond Pen Aided with Laser Beam Preheating Based on Optical Fiber Delivering

2006 ◽  
Vol 304-305 ◽  
pp. 109-112 ◽  
Author(s):  
Qi Lin Deng ◽  
An Ning Xie ◽  
K.K. Sun ◽  
G.C. Zhou ◽  
Jian Li Song
Keyword(s):  
Temperature Field ◽  
Laser Beam ◽  
Optical Fiber ◽  
High Efficiency ◽  
New Method ◽  
Mathematics Model ◽  
Grinding Wheels ◽  
Diamond Grinding ◽  
On Line ◽  
Set Up

The dressing on line of diamond grinding wheels used in NC optical curve grinding machines are very difficult. A method has been researched in this paper that is dressing the diamond grinding wheels by a diamond pen aided with laser beam preheating . Its principle has been stated. The temperature mathematics model of laser beam preheating diamond grinding wheels has been set up. The temperature field of resin substrate diamond grinding wheels has been calculated. Through the analyses on the results of the temperature field, it has been known that the distance between laser beam preheating central and the diamond pen dressing point be very small. A new method that is delived laser beam by optical fiber in dressing on line of diamond grinding wheels by a diamond pen aided with laser beam preheating has be proposed. Uasing this new method, a high precision and high efficiency in dressing diamond grinding wheels on line can be fulfiled.

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

Characteristics and Application of Temperature-Field Emitters

1975 ◽  
Vol 33 ◽  
pp. 144-145
Author(s):  
N. Tamura ◽  
T. Goto ◽  
Y. Harada
Keyword(s):  
Temperature Field ◽  
Electron Microscope ◽  
Field Emission ◽  
Resolving Power ◽  
High Brightness ◽  
Field Emitters ◽  
Emission Electron ◽  
Sufficient Stability ◽  
Scanning Electron ◽  
Illuminating System

On account of its high brightness, the field emission electron source has the advantage that it provides the conventional electron microscope with highly coherent illuminating system and that it directly improves the, resolving power of the scanning electron microscope. The present authors have reported some results obtained with a 100 kV field emission electron microscope.It has been proven, furthermore, that the tungsten emitter as a temperature field emission source can be utilized with a sufficient stability under a modest vacuum of 10-8 ~ 10-9 Torr. The present paper is concerned with an extension of our study on the characteristics of the temperature field emitters.

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