Effect of the Spin-Line Temperature Profile on the Translocation of the Solidification Point and Jet Thinning in Unconfined Melt Electrospinning

2020 ◽  
Author(s):  
Elnaz Shabani ◽  
Amir Azimi Yancheshme ◽  
Avner Ronen ◽  
Russell E. Gorga
Keyword(s):  
Temperature Profile ◽  
Solidification Point ◽  
Melt Electrospinning ◽  
Line Temperature

Blisk Life Prediction for Twin-Shaft Turbo Engines by Using a Two-Dimensional Thermal Off-Design Model

2010 ◽  
Author(s):  
Ying Chen ◽  
Ashok Koul ◽  
Jun Zhao
Keyword(s):  
Temperature Distribution ◽  
Temperature Profile ◽  
Gas Turbines ◽  
Life Prediction ◽  
Life Cycle Management ◽  
Two Dimensional ◽  
System A ◽  
Crack Initiation Life ◽  
Semi Empirical ◽  
Line Temperature

Understanding the off-design engine behavior is very important for the life cycle management of gas turbines because overhaul interval must be predicted accurately to minimize engine down time and maintenance costs. An off-design thermodynamic model has been developed for twin-shaft engines to obtain mean-line temperature distribution to be used in a prognostics system. A semi-empirical projecting approach was adopted to compute the two-dimensional temperature distribution for the gas path components. This temperature profile was then fed into the structural analysis and damage modeling modules of the prognostics system to predict the fracture critical location and crack initiation life of an A 250 integrally cast bladed disc (blisk). Comparison of the twin shaft model with GasTurb results showed that the model predicts the temperature profile within +/− 8K. The life prediction results from the prognostics system also match closely with the field data.

ON-LINE TEMPERATURE MEASUREMENT IN A PLASMA REACTOR FOR FULLERENE SYNTHESIS

2003 ◽  
Vol 7 (1) ◽  
pp. 43-49 ◽  
Author(s):  
S. Abanades ◽  
J. M. Badie ◽  
Gilles Flamant ◽  
L. Fulcheri ◽  
J. Gonzales-Aguilar ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Plasma Reactor ◽  
On Line ◽  
Line Temperature

Control Algorithms for Inductors Movement in Induction Heated Calenders

2012 ◽  
Vol 17 (4) ◽  
pp. 51-57
Author(s):  
Andrzej Frązyk ◽  
Piotr Urbanek ◽  
Jacek Kucharski
Keyword(s):  
Temperature Profile ◽  
Induction Heating ◽  
Control Algorithms ◽  
Uniform Temperature ◽  
Cylinder Axis ◽  
Steel Cylinder ◽  
Modern Technologies ◽  
Temperature Amplitude

Abstract Fixed, placed at regular distances inductors for induction heating of a rotating steel cylinder do not provide sufficiently uniform temperature profile along cylinder axis required by modern technologies,. The article examines the influence of inductors movement along the cylinder axis on the reduction of pick-to- pick temperature amplitude.

Fiber energy efficiency Part I: Extended entropy model

2014 ◽  
Vol 29 (2) ◽  
pp. 322-331 ◽  
Author(s):  
Anders Karlström ◽  
Karin Eriksson
Keyword(s):  
Energy Efficiency ◽  
Temperature Profile ◽  
Dynamic Models ◽  
Fluid Dynamic ◽  
Multiscale Model ◽  
Process Conditions ◽  
Entropy Model ◽  
Refining Zone ◽  
Energy Balances ◽  
Flat Zone

Abstract This is the first in a series of papers presenting the development of a comprehensive multiscale model with focus on fiber energy efficiency in thermo mechanical pulp processes. The fiber energy efficiency is related to the defibration and fibrillation work obtained when fibers and fiber bundles interact with the refining bars. The fiber energy efficiency differs from the total refining energy efficiency which includes the thermodynamical work as well. Extracting defibration and fibrillation work along the radius in the refining zone gives information valuable for fiber development studies.Models for this process must handle physical variables as well as machine specific parameters at different scales. To span the material and energy balances, spatial measurements from the refining zone must be available. In this paper, measurements of temperature profile and plate gaps from a full-scale CD-refiner are considered as model inputs together with a number of process variables. This enables the distributed consistency in the refining zone as well as the split of the total work between the flat zone and the CD-zone to be derived. As the temperature profile and the plate gap are available in the flat zone and the CD-zone at different process conditions it is also shown that the distributed pulp dynamic viscosity can be obtained. This is normally unknown in refining processes but certainly useful for all fluid dynamic models describing the bar-to-fiber interactions. Finally, it is shown that the inclusion of the machine parameters will be vital to get good estimates of the refining conditions and especially the split between the thermodynamical work and the defibration/fibrillation work.

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