2 edition of Flow visualization in microchannels. found in the catalog.
Flow visualization in microchannels.
Thesis (Ph.D.) -- University of Toronto, 2003.
|The Physical Object|
|Pagination||1 v. (in various foliations).|
Fluid flow in microdevices consisting of pairs of microchannels in series was studied. The dimensions of the channels are about 40 μm × 1 μm × μm for the wide and about 20 μm × 1 Cited by: This work presents new experimental data on flow boiling of Ra in an array of parallel microchannels. Heat transfer coefficient evaluation and flow visualization were performed in copper microchannels Author: Gennaro Criscuolo, Martin R. Karn, Wiebke B. Markussen.
Flow Visualization Studies In a parallel study with a 6-port transparent microchannel of hydraulic diameter of mm, and a cross- section area of x10 -5 m 2, flows of refrigerant Ra were recorded Cited by: 4. Flow visualization has been conducted with and without an orifice insert at the inlet of microchannels. Visualization confirmed the existence of flow instability, back flow and non-uniform distribution of flow among the channels when the insert with orifices was removed. Flow patterns in the microchannels Cited by:
Abstract. We have demonstrated a transient micro particle image velocimetry (micro-PIV) technique to measure the temporal development of electroosmotic flow in microchannels. Synchronization of . Flow visualization using a high-speed camera coupled with a microlens or an optical microscope is the most universal technique for characterizing two-phase flows in microdevices with direct optical Cited by:
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The main objective of the flow visualization study is to provide insight into flow distribution, flow regimes, and transition characteristics in microchannels. The thermohydraulic performance of these reduced size channels are strongly influenced by the number of flow regimes Author: Sujoy Kumar Saha, Gian Piero Celata.
A fluorescent-dye based flow visualization technique for liquid microchannel flows is presented in this thesis. Of interest are pressure-driven and particularly electroosmotic flows of Reynolds number on Cited by: 3. Flow Visualization, Second Edition focuses on developments, applications, and results in the field of flow visualization.
Organized into four chapters, this book begins with the principles of flow visualization Book Edition: 2. Quantitative visualization of microflows is often needed to evaluate the efficiency of fluid mixing, study flow properties, investigate unusual flow behavior, and verify computational fluid dynamic Cited by: 5.
Interfacial flow visualization becomes necessary for tracking the transient flow in the microfluidic devices. A novel method for visualization of the meniscus interface using a standard micro particle image velocimetry (micro-PIV Author: Auro Ashish Saha, Sushanta K.
Mitra. This Brief presents an up to date summary of details of the flow boiling heat transfer, pressure drop and instability characteristics; two phase flow patterns of expanding microchannels.
Results obtained. Flow visualization evaluates certain properties of a flow field directly accessible to visual perception. Organized into five chapters, this book first presents the methods that create a visible flow pattern that could be investigated by visual inspection, such as simple dye and density-sensitive visualization Book Edition: 1.
Most of our current knowledge in microcirculation is based on macroscopic flow phenomena such as Fahraeus effect and Fahraeus-Linqvist effect. • Chapter 1 presents an introduction on flow boiling in microchannels, the fundamental issues, the objectives of the study and the outline of the thesis.
heat transfer in microchannels presented. Flow Patterns During Flow Boiling Instability in Silicon-Based Pin-Fin Microchannels J. Heat Transfer (March, ) Erratum: “An Experimentally Validated Model for Two-Phase Pressure Drop in the Intermittent Flow Regime for Circular Microchannels Cited by: The experiments are carried out in microchannels with hydraulic diameters from to µ ma tReynolds numbers ranging from to The pressure drop in these microchannels is measured in situ and is also determined by correcting global measurements for inlet and exit losses.
Onset of turbulence is verified by flow visualization. A visualization study on flow condensation in hydrophobic rectangular silicon microchannels with hydraulic diameter of approximately μm is conducted.
Thin Au film with Cited by: Flow boiling in microchannels is an attractive heat transfer option because of the combination of two highly efficient processes.
In this chapter, the fundamental aspects of flow boiling in microchannels and minichannels are introduced. First, the nucleation phenomenon under flow boiling. Part I Fluid Dynamics in Microchannels.
1 Multiphase Flow Axel G€unther and Michiel T. Kreutzer multiphase ﬂows in 10nm–mm wide microchannels. In addition to interfacial Fundamentals of Multiphase Flow. The main objective of the flow visualization study is to provide insight into flow distribution, flow regimes, and transition characteristics in a parallel array of microchannels.
The qualitative flow visualization results can be used to support the quantitative experimental data for better understanding of two-phase flow characteristics in microchannel heat Cited by: This aspect of flow visualization reaches out to the general public: we are all familiar with the aspect of clouds in the sky, the trail of cigarette smoke, and the swirling patterns to be seen in rivers and previous publications which concentrated mainly on the theoretical aspect of flow visualization, this book Format: Hardcover.
confocal microscopy to provide three-dimensional (3D) visualization of two-phase flow structures. Such a technique may provide insight into key flow transitions that were observed during high-speed fluorescent flow visualization.
experimental investigation of void fraction and frictional pressure drop in microchannels. A flow visualization analysis is another important goal for two -phase flow behavior understanding and.
Nominally, microchannels can be defined as channels whose dimensions are less than 1 millimeter and greater than 1 1 millimeter the flow exhibits behavior that is the same as most File Size: 1MB. In this work, we show the ability of a micromilling machine to manufacture microchannels down to 30 µm and also the ability of a microfluidic device to perform partial separation of red blood cells from plasma.
Flow visualization Cited by: 7. Flow Visualization Paperback – December 3, by Wolfgang Merzkirch (Author) out of 5 stars 1 rating. See all 5 formats and editions Hide other formats and editions. Price New from Used from 5/5(1). A new type of diabatic flow pattern map for boiling heat transfer in microchannels.
R Revellin and J R Thome. Published 9 March • IOP Publishing Ltd Journal of .Contemporary Perspectives on Flow Boiling Instabilities in Microchannels and Minichannels Book Contemporary Perspectives on Liquid Cold Plate Design: Design and Manufacturing Liquid Cooled .