The influence of the ratio of the diameters of the vortexes and mixing chambers of a vortex ejector on its own characteristics

2020 ◽  
Author(s):  
O. A. Evdokimov
Keyword(s):  
Mixing Chambers

Evaluation of the mixing performance in a planar passive micromixer with circular and square mixing chambers

2017 ◽  
Vol 24 (6) ◽  
pp. 2599-2610 ◽  
Author(s):  
Ranjitsinha R. Gidde ◽  
Prashant M. Pawar ◽  
Babruvahan P. Ronge ◽  
Nitin D. Misal ◽  
Ranjit B. Kapurkar ◽  
...  
Keyword(s):  
Mixing Performance ◽  
Passive Micromixer ◽  
Mixing Chambers

Design optimization of micromixer with circular mixing chambers (M-CMC) using Taguchi-based grey relational analysis

2020 ◽  
Vol 18 (9) ◽  
Author(s):  
Ranjitsinha R. Gidde
Keyword(s):  
Grey Relational Analysis ◽  
Design Parameters ◽  
Relational Analysis ◽  
Mixing Dynamics ◽  
Depth Study ◽  
Grey Relational Grade ◽  
Grey Relational ◽  
Mixing Chambers ◽  
Optimal Set ◽  
Level Analysis

AbstractThe aim of the present study is to optimize the micromixer with circular mixing chambers (M-CMC) using Taguchi-based grey relational analysis approach. Simulations are performed to investigate the effect of design parameters viz. chamber diameter, transverse offset and width of constriction channel on performance characteristics for parameter sets corresponding to Orthogonal Array (OA) L9. Further, grey relational grade is used to identify the optimal set of design parameters. In depth study of flow and mixing dynamics are carried out to visualize the mixing mechanism for optimal and other two cases of proposed micromixer design configuration for Re in the range from 0.1 to 50. In order to assess the response of each design variable at each level, analysis of variance (ANOVA) is also performed to analyse influence of design parameters on mixing index and pressure drop.

Mixing chambers in flow analysis: A review

2009 ◽  
Vol 64 (5) ◽  
pp. 524-532 ◽  
Author(s):  
E. A. G. Zagatto ◽  
J. M. T. Carneiro ◽  
S. Vicente ◽  
P. R. Fortes ◽  
J. L. M. Santos ◽  
...  
Keyword(s):  
Flow Analysis ◽  
Mixing Chambers

A computational study about the types of entropy generation in three different R134a ejector mixing chambers

2016 ◽  
Vol 63 ◽  
pp. 199-213 ◽  
Author(s):  
J. Sierra-Pallares ◽  
J. García del Valle ◽  
P. García Carrascal ◽  
F. Castro Ruiz
Keyword(s):  
Entropy Generation ◽  
Computational Study ◽  
Mixing Chambers

scholarly journals Introduction to the problem of calculating the parameters of the mixing chamber of an afterburning bypass engine

2021 ◽  
Vol 20 (3) ◽  
pp. 57-64
Author(s):  
O. D. Karev
Keyword(s):  
Mathematical Modeling ◽  
Chemical Composition ◽  
Mathematical Models ◽  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Turbine Engine ◽  
The Core ◽  
Mixing Chamber ◽  
Mixing Chambers

The article considers the problem of calculation accuracy when using mathematical models of gas-turbine engines of the second level of complexity, using the example of a device for mixing the flows of the core engine and the bypass duct of a gas turbine engine, and suggests methods for solving it. The processes taking place in mixing chambers of air-breather engines are considered to be difficult for mathematical modeling since the exchange of kinetic and thermal energies of the flows characterized by different velocities, pressures, temperatures and chemical composition occurs in them simultaneously. The mixer does not only ensure mixing of flows from different engine ducts, but also acts as a kind of throttle. It regulates the pressure downstream of the fan and, consequently, air consumption in the bypass duct, thus affecting directly the fan characteristics and the distribution of flows over the engine ducts. The paper presents the dependencies of the workflow parameters that allow for more accurate verification of mixer models of the second level of complexity.

Structure of the plasma flow formed in multistream mixing chambers of different type

1987 ◽  
Vol 52 (3) ◽  
pp. 321-325
Author(s):  
A. L. Moss� ◽  
A. N. Knak ◽  
E. M. Ermolaeva
Keyword(s):  
Plasma Flow ◽  
Mixing Chambers

scholarly journals Mixing in the NETmix Reactor

2021 ◽  
Vol 3 ◽  
Author(s):  
Joana Matos ◽  
Ricardo J. Santos ◽  
Madalena M. Dias ◽  
José Carlos B. Lopes
Keyword(s):  
Channel Width ◽  
Width Ratio ◽  
Perfect Mixing ◽  
Mixing Chambers ◽  
Chamber Diameter

NETmix is a static mixing reactor composed of a network of mixing chambers interconnected by channels. The repetitive mixing pattern inside the reactor enables the use of reduced geometries to represent the NETmix network, such as the ExtendedNUB model, used in this work. Mixing in NETmix is based on the impingement of jets, issuing from channels. Inside the chambers, the jets are engulfed by dynamic vortices which can be quantified using Lagrangian techniques. Batch Lagrangian Mixing Simulation (BLMS) is based on successive injections of particles to measure the fraction of the fluids at the outlet of the mixing chambers. The distribution of the outlet fraction of particles indicates that it is possible to have nearly perfect mixing inside the NETmix chambers, depending on the dimensions of the channels and chambers. The NETmix design is here optimized in relation to the chamber diameter to channel width ratio, D/d. Results from BLMS show that best performance in NETmix occurs for 6.65≤D/d≤6.85.

Three-Dimensional Silicone Device Fabrication and Interconnection Scheme for Microfluidic Applications Using Sacrificial Wax Layers

2000 ◽  
Author(s):  
Saman Dharmatilleke ◽  
H. Thurman Henderson
Keyword(s):  
Cross Sections ◽  
Room Temperature ◽  
Three Dimensional ◽  
Fused Silica ◽  
Device Fabrication ◽  
Silicone Elastomer ◽  
Micro Channels ◽  
Membrane Type ◽  
Channel Lengths ◽  
Mixing Chambers

Abstract A simple room-temperature procedure is reported herein for formation of true three-dimensionality of “microfluidic components” and complete microfluidic systems in silicone elastomer, this is achieved by molding the plastic to simply encapsulate a pre-formed network of sacrificial wax threads or other connected wax configurations which are ultimately to become micro channels, microfluidic components and cavities in the plastic motherboard. When these wax sacrificial areas are etched away with acetone, precise cavities, channels, and capillaries result with direct arbitrary three-dimensionality. This method leads also to a simple and effective external interconnection scheme where ordinary fused silica tubes may be press-fitted into the surface opening to withstand high pressure. An array of micro channels having circular cross sections with diameters of 100, 150 and 200 microns, membrane type valves, pinch valves, mixing chambers and reservoirs for fluid storage were molded in silicone elastomer using wax filaments. The wax filaments were dissolved in acetone after the silicone elastomer became hardened, leaving the micro channels, valves, mixing chambers and reservoirs in the silicone elastomer. This scheme gives the flexibility of allowing multi stacks of components (motherboards) while being able to control the channel lengths within the stacks as desired.

A 3He circulating dilution refrigerator with two mixing chambers

Physica B+C ◽  
1976 ◽  
Vol 81 (2) ◽  
pp. 323-324 ◽  
Author(s):  
A.Th.A.M. De Waele ◽  
A.B. Reefers ◽  
H.M. Gijsman
Keyword(s):  
Dilution Refrigerator ◽  
Mixing Chambers
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