Numerical investigation of sinter cooling process in sinter cooler

2013 ◽  
Author(s):  
Y. Liu ◽  
J. Wang ◽  
X. Yuan ◽  
J. Yang ◽  
Q. W. Wang
Keyword(s):  
Numerical Investigation ◽  
Cooling Process ◽  
Sinter Cooler

Numercial Simulation of Sinter Cooling Process

2010 ◽  
Author(s):  
Fengguo Tian ◽  
D. Frank Huang ◽  
Chenn Q. Zhou
Keyword(s):  
Heat Transfer ◽  
Initial Temperature ◽  
Air Flow ◽  
Convection Heat Transfer ◽  
Cooling Process ◽  
Initial Temperature Distribution ◽  
Cooling Air Flow ◽  
Sinter Cooler ◽  
Cooling Air ◽  
Cooling Model

A 2-D sinter cooling model is built to simulate the hot iron ore sinter cooling process in a sinter cooler. In this model the convection heat transfer is applied for the heat transfer between the sinter particle skin and the cooling air flow. Thermal conduction is used for the heat conduction within the sinter particles, and fluid dynamics is applied tothe cooling gas distributions. This model will be able to analyze the effects of sinter particle size, size distribution, hot sinter initial temperature, initial temperature distribution, sinter cooler size, cooler configuration and cooling air flow rate as well as cooling air temperature on the sinter cooling process. In this paper the 2-D sinter cooling model is presented along with certain parametric study examples.

scholarly journals The Influence of Topography and Ambient Stability on the Characteristics of Cold-Air Pools: A Numerical Investigation

2012 ◽  
Vol 51 (10) ◽  
pp. 1740-1749 ◽  
Author(s):  
Marwan Katurji ◽  
Shiyuan Zhong
Keyword(s):  
Numerical Investigation ◽  
Slope Angle ◽  
Cooling Process ◽  
Flux Divergence ◽  
Cold Air ◽  
Advanced Regional Prediction System ◽  
Slope Winds ◽  
Regional Prediction ◽  
Downslope Wind ◽  
Basin Floor

AbstractA high-resolution numerical investigation of a cold-air pooling process (under quiescent conditions) is carried out that systematically highlights the relations between the characteristics of the cold-air pools (e.g., slope winds, vertical temperature and wind structure, and cooling rate) and the characteristics of the topography (e.g., basin size and slope angle) under different ambient stabilities. The Advanced Regional Prediction System model is used to simulate 40 different scenarios at 100-m (10 m) horizontal (vertical) resolution. Results are within the range of similar observed phenomena. The main physical process governing the cooling process near the basin floor (<200 m in height) was found to be longwave radiative flux divergence, whereas vertical advection of temperature dominated the cooling process for the upper-basin areas. The maximum downslope wind speed is linearly correlated with both basin size and slope angle, with stronger wind corresponding to larger basin and lower slope angle. As the basin size increases, the influence of slope angle on maximum downslope wind decreases and the maximum is located farther down the slope. These relationships do not appear to be sensitive to stability, but weaker stability produces more cooling in the basin atmosphere by allowing stronger rising motion and adiabatic cooling. Insight gained from this study helps to improve the understanding of the cold-air pooling process within the investigated settings.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

Numerical Investigation of Discharge Current Path in a Hydrogen MPD Thruster

2016 ◽  
Vol 136 (3) ◽  
pp. 141-146 ◽  
Author(s):  
Akira Kawasaki ◽  
Kenichi Kubota ◽  
Ikkoh Funaki ◽  
Yoshihiro Okuno
Keyword(s):  
Numerical Investigation ◽  
Discharge Current ◽  
Current Path
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