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26 articles for “channel flow”
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Exploring Watersheds: Assessing Drainage Basin Characteristics and Management Approaches for Channel and Overland Flows
Abstract: Abstract: A watershed also known as a drainage basin or catchment area, constitutes a fundamental hydrological unit encompassing a delineated land surface from which all runoff converges into a common drainage system, channel, or water body. Recognized as vital frameworks for resource assessment and sustainable development planning, watersheds epitomize the intricate interplay between land and water resources, offering optimal synergies for holistic management approaches. This paper embarks on a comprehensive …
Published in International Journal of Landscape Planning and Architecture · Vol. 10, Issue 1, 2024 · pp. 24–34 Read article
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Low-Cost FDM-Printed Microfluidic Droplet Generators with Vertical Flow-Focusing Channels
Abstract: *Author for CorrespondenceL. K. NarangammanaE-mail: [email protected] Low-cost fabrication methods are now essential for expanding access to microfluidic technologies in biological and laboratory applications. In this work, we present a fused deposition modeling (FDM) based approach for the rapid fabrication of monolithic microfluidic droplet generators incorporating several T-junction and specific flow-focusing geometries, including a novel vertical channel configuration. All devices were fabricated without post-processing or bonding, demonstrating a simple and cost-effective …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 30–46 Read article
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Determination of the Flow Velocity Resistance in Non- Submerged Woody Plants
Abstract: Vegetation on the bank of a river or stream has a major influence on resistance, velocity distribution,and turbulence force. The resistance to flow in open channels depends on different channel and flow parameters. Out of many factors, vegetation is the mainly important parameter in open channels. In this study have been five points to measure the velocity in the channel. The experimental work has been done by a rectangular channel …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 1, 2022 · pp. 1–7 Read article
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Review On Bipolar Plate Geometric Design and Materials for Proton Exchange Membrane Fuel Cell Applications
Abstract: Abstract Bipolar plates (BPs) are vital components in proton exchange membrane fuel cells (PEMFCs), performing multiple essential functions that directly influence system efficiency, durability, and overall operational performance. They ensure uniform distribution of reactant gases across the active area, provide electrical conductivity between adjacent cells, assist in effective thermal management by dissipating heat generated during electrochemical reactions, and maintain proper sealing to prevent leakage of gases and coolant. Among these …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 11, Issue 2, 2025 · pp. 40–56 Read article
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DETERMINATION OF MEAN VELOCITY OF FLOW USING FINITE DIFFERENCE METHOD
Abstract: The objective of the study is to establish the optimal method for determination of Mean velocity of flow. The values of hydraulic parameters such as Channel slope, Discharge of flow, Mean depth of flow and Mean velocity of flow are obtained in laboratory observations. And the value of mean velocity of flow is obtained using the finite difference method. The comparative analysis is done between the theoretical and practical observations …
Published in International Journal of Water Resources Engineering · Vol. 5, Issue 2, 2019 · pp. 46–49 Read article
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Dielectric Barrier Discharge Plasma Processing on Pristine PMMA Surfaces for Microfluidic Applications towards Applied Nanotechnology
Abstract: In this experimental work, a total of six individual microchannel bends as microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique using polymethylmethacrylate (PMMA). Air dielectric barrier discharge (DBD) plasma processing is the selected surface modification technique in this particular experimental work. Dyed aqueous ethanol (10% ethanol, 90% dyed water) is the prepared working liquid to study the microfluidic flow characteristics. Effect of channel aspect …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 1, 2020 · pp. 1–7 Read article
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Study and Characterisitics of Different GVF Profile of Rectangular Channel
Abstract: This technical note presents the equation for one-dimensional gradually-varied steady flow profiles with constant discharge, in a rectangular-section prismatic channel of constant roughness and small longitudinal slope. The flow profile differential equation was transformed by means of a polynomial approximation and then, by an algebraic procedure followed by the integration of the equation, the solution was obtained. This solution was applied to a particular case which, through a comparative analysis, …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 24–34 Read article
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Experimental Studies on the Surface-Driven Microfluidic Flow of Dyed Working Liquids in Sudden Expansion Microchannels Fabricated by Polymer
Abstract: In this experimental work, the sudden expansion microchannels are fabricated by maskless lithography, hot embossing lithography, drilling, direct bonding technique and chip separation technique using own hands-on of author completely. Total 15 individual sudden expansion microchannels are fabricated in this work using polymethylmethacrylate (PMMA) as optically transparent polymer. Effects of channel aspect ratio, surface wettability and liquid viscosity on surface-driven microfluidic flow are experimentally studied in the fabricated sudden expansion …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 1, 2020 · pp. 44–59 Read article
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Flow Characteristics of Triangular Plan Form Weir
Abstract: Weirs are used for discharge measurement and flow diversion in the open channels. However, modified weirs such as plan form weirs, Labyrinth weir, oblique weir and piano key weir, etc. having larger crest length compared to normal weir having same lateral space assist in enhancing discharging capacity for a given upstream head, without creating much afflux. An experimental study was carried out to understand the effect of the geometry of …
Published in International Journal of Water Resources Engineering · Vol. 3, Issue 2, 2017 · pp. 17–22 Read article
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Short Experimental Report on the Passive Microfluidic Flow in Fluid Mechanics
Abstract: In this work related to experiments, two individual polymethylmethacrylate (PMMA) based microfluidic devices (microchannel bends) are fabricated by the following techniques: (a) maskless lithography, (b) hot embossing lithography, and (c) direct bonding technique. Dyed water is chosen as working liquid in this particular work. The CMOS camera is used to capture each passive microfluidic flow of dyed water in the fabricated devices. The effects of channel aspect ratio and centrifugal …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 32–37 Read article
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Parametric Analysis of Ribbed Channels for Gas Turbine Engines
Abstract: This work uses experimental data to validate a ribbed surface that is computationally examined interior passageway of a static blade on a turbine. to replicate an illustration from a released publication while researching the Computational Fluid Dynamic conjugated heat transmission. The turbulence simulation matched the most closely. Publicly available physical practical results were found by working on Ansys Workbench. Convective heat exchange efficiencies additionally to stress profiles utilizing those computationally …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 2, 2023 · pp. 28–34 Read article
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Short Review on Nanofluidics with the Experimental Demonstration on Microfluidic Capillary Flow inside Microchannel Bends
Abstract: In this research work, author has presented a short review on nanofluidics. Total three individual microchannel bends as microfluidic devices are designed, fabricated and tested in this experimental work using author’s own hands-on completely. Polymethylmethacrylate (PMMA) is the selected polymeric material to fabricate these microfluidic devices. Dyed water is prepared as working liquid to test these microfluidic devices. According to this experimental study, the surface-driven microfluidic flow of dyed water …
Published in International Journal of Applied Nanotechnology · Vol. 6, Issue 1, 2020 · pp. 16–22 Read article
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Experimental Studies on the Surface-Driven Microfluidic Flow of Dyed Ethylene Glycol in Polymer Microfluidic Devices
Abstract: In this experimental work, three individual microfluidic devices are fabricated by polymethylmethacrylate (PMMA) using maskless lithography, hot embossing lithography and direct bonding technique. Straight microchannel having uniform width along entire channel length is the chosen design of microchannels before fabrication. Dyed ethylene glycol is prepared and used as working liquid. Effect of channel aspect ratio on surface-driven capillary flow of dyed ethylene glycol is studied. CMOS camera is used to …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 2, 2020 · pp. 17–22 Read article
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Review on the Capillary Flow Characteristics in Polymer based Microfluidic Systems
Abstract: In this review different effects to control the surface-driven capillary flow in polymer based microfluidic systems. Author has used the polymers like polyimide, SU-8 and polymethylmethacrylate (PMMA) to fabricate the polymer based microfluidic systems. Author has studied the individual effects of surface wettability, surface free energy, surface chemistry, surface topography, channel aspect ratio, capillary pressure, kinetic energy, centrifugal force, surface area to volume ratio, microfluidic friction, liquid viscosity and effective …
Published in International Journal of Polymer Science and Engineering · Vol. 4, Issue 1, 2018 · pp. 28–33 Read article
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Effect of Aggregate Shape and Binder on the Rutting Characteristics of Bituminous Mixes
Abstract: Rutting or permanent deformation is the depression in the wheel paths due to accumulation of small amounts of unrecoverable strains under the channelized repeated wheel loads. Shear deformation or lateral plastic flow of the bituminous mix from the wheel tracks also results in rutting. Performance of bituminous mixes is influenced by the constituents of the mix made of aggregates and binder. Among various parameters of these two ingredients, aggregate shape …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 3, Issue 1, 2017 · pp. 1–6 Read article
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Modeling and Simulation of Double-Pass Flat Plate Solar Air Heater Without Porous Media
Abstract: The double-pass solar collector with porous media in the lower channel provides a higher outlet temperature compared to the conventional double-pass collector without porous media. Therefore, the thermal efficiency of the solar collector is higher. A theoretical model has been developed for the double-pass solar collector. The porous media has been inserted to increase heat transfer, area density and the total heat transfer rate. Comparisons of the theoretical and the …
Published in International Journal of Computer Aided Manufacturing · Vol. 3, Issue 2, 2017 · pp. 1–10 Read article
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Modified Design Improvement Study and Optimization of a intake Manifold to Obtain Unequal Distribution of Velocity for Optimal Diesel Engine Performance
Abstract: Geometrical design of intake manifold has been found very significant for the better performance of an I.C. Engine. It becomes less effective at the intake manifold's runner's outlets due to an uneven flow distribution of the intake air. With an increase in velocity at the distribution channels, the presented study seeks to make this uneven velocity distribution nearly equal without requiring any additional significant changes to the entrance manifold's construction. …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 1, 2023 · pp. 13–23 Read article
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Thermodynamic Explanation on Surface-Driven Capillary Flow of Working Liquids in the Microfluidic Devices Fabricated by Polymers
Abstract: In this experimental work, total 100 individual microfluidic devices are fabricated by polymers using author’s own hands-on completely. A set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by SU-8 using the maskless lithography and indirect bonding technique. Another set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by PMMA using the maskless lithography, hot embossing …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 1, 2020 · pp. 45–70 Read article
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Experimental Study on Scour Around T-Head Groynes in Open Channel
Abstract: Groynes are the river training structures which are used extensively in anti-erosion activities. An experimental investigation of scouring around the groynes in an open channel is presented in this paper and an attempt to analyze the behavior of T-shaped groynes in terms of its applicability in alluvial channels was made. Tests were conducted by varying the symmetry of flange in three different manners (symmetric, larger flange in upstream and downstream …
Published in International Journal of Water Resources Engineering · Vol. 4, Issue 1, 2018 · pp. 33–39 Read article
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Investigating Analogue Gravity Phenomena through Electronic Black Holes: A Study
Abstract: The universe, in its grand cosmic ballet, is replete with mysteries, and among the most profound are the enigmatic black holes. These celestial behemoths, born from the collapse of massive stars, warp spacetime to such an extent that nothing, not even light, can escape their gravitational embrace. Their behavior, governed by Einstein's theory of General Relativity, pushes the boundaries of our understanding, presenting phenomena like Hawking radiation – a quantum …
Published in International Journal of Microwave Engineering and Technology · Vol. 12, Issue 1, 2026 · pp. 9–24 Read article