Double-Layer Flow Channel Insert for Electric and Thermal Insulation in the Dual-Coolant Lead-Lithium Blanket

2009 ◽  
Vol 56 (1) ◽  
pp. 201-205 ◽  
Author(s):  
Sergey Smolentsev ◽  
Siegfried Malang
Keyword(s):  
Double Layer ◽  
Thermal Insulation ◽  
Flow Channel ◽  
Layer Flow ◽  
Lithium Blanket

Flow Field Simulation of the Solo-Supported High Pressure Gas Device of Double-Layer Air Jet Looms

2011 ◽  
Vol 101-102 ◽  
pp. 512-515
Author(s):  
Yi Sheng Liu ◽  
Xu Dong Hu ◽  
Peng Dong Su
Keyword(s):  
High Pressure ◽  
Flow Field ◽  
Flow Velocity ◽  
Double Layer ◽  
Research Program ◽  
Flow Channel ◽  
Feasibility Analysis ◽  
Middle Line ◽  
Air Jet ◽  
Field Simulation

A research program is currently underway with the purpose of developing a double-layer air jet looms with solo-supported gas device. Issues related to the design and feasibility analysis of the solo-supported high pressure gas device are discussed. The results of simulations show that assistant nozzle is necessary during weft insertion motion, but too many assistant nozzles would cause the flow velocity reduce. And it is confirmed that flow channel with one main and four assistant nozzles is one of the best designs to keep the flow velocity at the middle line of flow channel more than 90m/s and make the loom work swimmingly.

scholarly journals Influence of Fabric Parameters on Thermal Comfort Performance of Double Layer Knitted Interlock Fabrics

2017 ◽  
Vol 17 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Ali Afzal ◽  
Sheraz Ahmad ◽  
Abher Rasheed ◽  
Faheem Ahmad ◽  
Fatima Iftikhar ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Resistance ◽  
Thermal Comfort ◽  
Specific Heat ◽  
Double Layer ◽  
Thermal Insulation ◽  
Loop Length ◽  
Knitted Fabrics ◽  
Thermal Transmittance ◽  
Thermal Absorptivity

Abstract The aim of this study was to analyse the effects of various fabric parameters on the thermal resistance, thermal conductivity, thermal transmittance, thermal absorptivity and thermal insulation of polyester/cotton double layer knitted interlock fabrics. It was found that by increasing fibre content with higher specific heat increases the thermal insulation while decreases the thermal transmittance and absorptivity of the fabric. It was concluded that double layer knitted fabrics developed with higher specific heat fibres, coarser yarn linear densities, higher knitting loop length and fabric thickness could be adequately used for winter clothing purposes.

Wave reaction of a dipole in a circulatory double-layer flow of finite depth

2016 ◽  
Vol 51 (2) ◽  
pp. 214-223 ◽  
Author(s):  
I. Yu. Vladimirov ◽  
N. N. Korchagin ◽  
A. S. Savin
Keyword(s):  
Double Layer ◽  
Finite Depth ◽  
Layer Flow

Technology of double-layer constructional and thermal-insulation corundum refractories

Refractories ◽  
1992 ◽  
Vol 33 (11-12) ◽  
pp. 493-496
Author(s):  
V. N. Sokov ◽  
A. Kh. Bizhanov
Keyword(s):  
Double Layer ◽  
Thermal Insulation

Double-layer runner bushes for the thermal insulation of steel feedheads

1997 ◽  
Vol 38 (3-4) ◽  
pp. 160-160
Author(s):  
V. P. Nemchenko ◽  
V. G. Mamaeva ◽  
M. Z. Naginskii ◽  
E. V. Nazarova ◽  
L. V. Panova ◽  
...  
Keyword(s):  
Double Layer ◽  
Thermal Insulation

The Optimized Design of a Double-Layer Flow Chamber

2007 ◽  
pp. 1113-1116
Author(s):  
Ye Zeng ◽  
Yi Lai ◽  
Hua Huang ◽  
Xiao Heng Liu
Keyword(s):  
Double Layer ◽  
Flow Chamber ◽  
Optimized Design ◽  
Layer Flow

scholarly journals Research on Inner Gas Inflation Improvements in Double-layer Gas-assisted Extrusion of Micro-tubes

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 899
Author(s):  
Cheng Luo ◽  
Xingyuan Huang ◽  
Tongke Liu ◽  
Hesheng Liu
Keyword(s):  
Double Layer ◽  
Flow Rate ◽  
Flow Resistance ◽  
Gas Flow ◽  
Significant Positive Correlation ◽  
Thin Wall ◽  
Gas Flow Rate ◽  
Extrusion Die ◽  
Tube Lumen ◽  
Layer Flow

Micro-tubes have small diameters and thin wall thicknesses. When using double-layer gas-assisted extrusion (DGAE) technology to process micro-tubes, due to the influence of flow resistance, airflow from the inner gas-assisted layer cannot flow into the atmosphere through the lumen. Over time, it will inflate or even fracture the micro-tubes intermittently and periodically. To solve this problem, a new double-layer micro-tube gas-assisted extrusion die was designed in this study. Its mandrel has an independent airway leading to the lumen of the extrudate, with which the gas flow into the lumen of the extrudate can be regulated by employing forced exhaust. Using the new die, we carried out extrusion experiments and numerical calculations. The results show a significant positive correlation between micro-tube deformation and gas flow rate in the lumen of a micro-tube. Without considering the refrigerant distortion of the microtube, the flow rate of forced exhaust should be set equal to that of the gas from the inner gas-assisted layer flow into the micro-tube lumen. By doing this, the problem of the micro-tube being inflated can be eliminated without causing other problems.

The distribution of man-made and naturally produced halocarbons in a double layer flow strait system

1996 ◽  
Vol 16 (9) ◽  
pp. 1185-1199 ◽  
Author(s):  
Elisabet Fogelqvist ◽  
Toste Tanhua ◽  
Omen Bastürk ◽  
Ilkay Salihoglu
Keyword(s):  
Double Layer ◽  
Layer Flow

The EU advanced lead lithium blanket concept using SiCf/SiC flow channel inserts as electrical and thermal insulators

2001 ◽  
Vol 58-59 ◽  
pp. 629-634 ◽  
Author(s):  
P. Norajitra ◽  
L. Bühler ◽  
U. Fischer ◽  
K. Kleefeldt ◽  
S. Malang ◽  
...  
Keyword(s):  
Flow Channel ◽  
Lithium Blanket ◽  
The Eu

The Optimized Design of a Double-Layer Flow Chamber

2007 ◽  
Vol 330-332 ◽  
pp. 1113-1116
Author(s):  
Ye Zeng ◽  
Yi Lai ◽  
Hua Huang ◽  
Xiao Heng Liu
Keyword(s):  
Endothelial Cells ◽  
Shear Stress ◽  
Double Layer ◽  
Stokes Equations ◽  
Flow Chamber ◽  
Flow Shear ◽  
Testing Chamber ◽  
Flow Shear Stress ◽  
Chemical Stimuli ◽  
Layer Flow

The morphology, functions, and gene expression of blood cells and vessels, especially endothelial cells may be modulated by complex hemodynamic forces, as well as by chemical stimulation. Various models have been designed to simulate either the effects of blood flow or the chemical environment on these cells in an effort to understand their response. In this study, a double-layer flow chamber was developed to deliver different flow shear stress and to offer chemical factors, for mimicing the characteristics of both mechanic and chemical stimuli as in vivo conditions. The upper layer of the flow chamber is a main testing chamber (MTC), structured as a quadrate lumen, in which endothelial cells are seeded on the basal plane. The mechanical properties of cells exposed to flow shear stress can be recorded in real-time. The lower layer is a supplementary testing chamber (STC), which provides chemical stimuli. A partition microfiltration membrane exists between the two layers. The flow relationship among variables, such as the velocity, the shear stress, and the pressure distribution of the flowing in the chamber are achieved by using the nondimensional technique and the method of Bessel function of imaginary argument according to Navier-Stokes equations.

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