Thermal Mold Design in Consideration of the Temperature Control Fluid Flow

2013 ◽  
Vol 28 (4) ◽  
pp. 361-367 ◽  
Author(s):  
C. Hopmann ◽  
P. Nikoleizig
Keyword(s):  
Fluid Flow ◽  
Temperature Control ◽  
Mold Design ◽  
Control Fluid

scholarly journals Topological inversions in coalescing granular media control fluid-flow regimes

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Fabian B. Wadsworth ◽  
Jérémie Vasseur ◽  
Edward W. Llewellin ◽  
Katherine J. Dobson ◽  
Mathieu Colombier ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Granular Media ◽  
Flow Regimes ◽  
Media Control ◽  
Control Fluid ◽  
Fluid Flow Regimes

Dripping, Jetting, Drops, and Wetting: The Magic of Microfluidics

MRS Bulletin ◽  
2007 ◽  
Vol 32 (9) ◽  
pp. 702-708 ◽  
Author(s):  
A. S. Utada ◽  
L.-Y. Chu ◽  
A. Fernandez-Nieves ◽  
D. R. Link ◽  
C. Holtze ◽  
...  
Keyword(s):  
Fluid Flow ◽  
San Francisco ◽  
Food Additives ◽  
Microfluidic Devices ◽  
Research Society ◽  
Harvard University ◽  
New Materials ◽  
Double Emulsions ◽  
Materials Research ◽  
Control Fluid

The following article is based on the Symposium X presentation given by David A. Weitz (Harvard University) on April 11, 2007, at the Materials Research Society Spring Meeting in San Francisco. The article describes how simple microfluidic devices can be used to control fluid flow and produce a variety of new materials. Based on the concepts of coaxial flow and hydrodynamically focused flow, used alone or in various combinations, the devices can produce precisely controlled double emulsions (droplets within droplets) and even triple emulsions (double emulsions suspended in a third droplet). These structures, which can be created in a single microfluidic device, have various applications such as encapsulants for drugs, cosmetics, or food additives.

A Foam-Core Meniscus Coating Process for Retrofit Anti-Reflective Coatings

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Venkata Rajesh Saranam ◽  
Chih-Hung Chang ◽  
Brian K. Paul
Keyword(s):  
Fluid Flow ◽  
Sol Gel ◽  
Silica Sol ◽  
Coating Process ◽  
Foam Core ◽  
Important Process ◽  
Solar Panels ◽  
Control Fluid ◽  
Reflective Coatings ◽  
Sol Gel Films

Foam-core meniscus coating is being used to retrofit 100 nm-scale sol–gel anti-reflective coatings (ARCs) onto in-field solar panels through the deposition, evaporation, and curing of wet films. Advantages of this technique include the means to control fluid flow relative to substrate motion and the ability to conform to large, warped substrates. While simple in practice, no models exist for predicting critical outcomes such as film thickness. In this paper, preliminary experiments are used to identify important process parameters, and an analytical model is developed and validated for predicting the thickness of silica sol–gel films deposited on solar glass.

scholarly journals Simulation of aquifer remediation from low-permeable lenses by back-diffusion phenomenon

2021 ◽  
Vol 36 (5) ◽  
pp. 57-66
Author(s):  
Mojtaba Dehqani Tafti ◽  
Faramarz Doulati Ardejani ◽  
Mohammad Fatehi Marji ◽  
Yousef Shiri
Keyword(s):  
Porous Medium ◽  
Fluid Flow ◽  
Solute Transport ◽  
Back Diffusion ◽  
Aquifer Remediation ◽  
Fine Grained ◽  
Remediation Strategies ◽  
Control Fluid ◽  
Boltzmann Method ◽  
Fluid Diffusion

Fluid flow in a dual permeable medium (DPM) is essential in solute transport in mining and aquifer studies. In this paper, water flushing into a contaminated DPM containing fine-grained lenses with different geometries was investigated with the Lattice Boltzmann Method (LBM). The LBM model used in this study was D2Q9 with a relaxation time of 1, a cohesion value of 3 for a fluid density of 1 (mu.Lu-3). The saturated fluid in the DPM was a contaminant that usually stays in low permeable lenses and after flushing, it is leaked into the porous medium by a second fluid (water). This phenomenon is predominant when the displacing fluid has a lower concentration than the contaminated fluid. Diffusion and advection are the main mechanisms that control fluid flow in the porous medium. The results of the simulations showed: (1) advection controlled solute transport through the flushing phase, and back-diffusion occurred after the change in phase; (2) the lenses’ geometry influenced the fluid flow pattern and the remediation process. As a result, aquifer remediation strategies based on the lenses’ geometry and their permeability can help us select the appropriate environmental protection.

scholarly journals Plasma Gas Temperature Control Performance of Metal 3D-Printed Multi-Gas Temperature-Controllable Plasma Jet

2021 ◽  
Vol 11 (24) ◽  
pp. 11686
Author(s):  
Yuma Suenaga ◽  
Toshihiro Takamatsu ◽  
Toshiki Aizawa ◽  
Shohei Moriya ◽  
Yuriko Matsumura ◽  
...  
Keyword(s):  
Temperature Control ◽  
Plasma Temperature ◽  
Plasma Jet ◽  
Control Performance ◽  
Gas Temperature ◽  
Temperature Plasma ◽  
Gas Channel ◽  
Computational Fluid Dynamics Analysis ◽  
3D Printed ◽  
Control Fluid

The aim of the study was to design and build a multi-gas temperature-controllable plasma jet that can control the gas temperature of plasmas with various gas species, and evaluated its temperature control performance. In this device, a fluid at an arbitrary controlled temperature is circulated through the plasma jet body. The gas exchanges heat with the plasma jet body to control the plasma temperature. Based on this concept, a complex-shaped plasma jet with two channels in the plasma jet body, a temperature control fluid (TCF) channel, and a gas channel was designed. The temperature control performance of nitrogen gas was evaluated using computational fluid dynamics analysis, which found that the gas temperature changed proportionally to the TCF temperature. The designed plasma jet body was fabricated using metal 3D-printer technology. Using the fabricated plasma jet body, stable plasmas of argon, oxygen, carbon dioxide, and nitrogen were generated. By varying the plasma jet body temperature from −30 °C to 90 °C, the gas temperature was successfully controlled linearly in the range of 29–85 °C for all plasma gas species. This is expected to further expand the range of applications of atmospheric low temperature plasma and to improve the plasma treatment effect.

A High Angle, Double Tilting Cold Stage for the AEI EM7

1974 ◽  
Vol 32 ◽  
pp. 450-451
Author(s):  
P.R. Swann ◽  
A.E. Lloyd
Keyword(s):  
Habit Plane ◽  
Temperature Control ◽  
Tilt Angle ◽  
Cooling System ◽  
Thermal Drift ◽  
High Angle ◽  
Cold Stage ◽  
High Degree ◽  
Better Than

Figure 1 shows the design of a specimen stage used for the in situ observation of phase transformations in the temperature range between ambient and −160°C. The design has the following features a high degree of specimen stability during tilting linear tilt actuation about two orthogonal axes for accurate control of tilt angle read-out high angle tilt range for stereo work and habit plane determination simple, robust construction temperature control of better than ±0.5°C minimum thermal drift and transmission of vibration from the cooling system.

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