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1986 articles for “surface” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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CFD Analysis of Tree Shaped Fin Array on Flat and Symmetrical Wedge Shaped Base Plate
Abstract: Heat generated from electronic chips is usually siphoned off by placing a heat sink. Due to the poor heat transfer capability of air extended surfaces are used as heat sink. Constant research is being carried out on the selection of geometry and material of extended surface for effective heat transfer. In the present work CFD analysis (ANSYS 14) is done on Tree fin array using FLUENT on a flat shaped …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 1, 2014 · pp. 1–6 Read article
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Augmentation of Heat Transfer in a Trough Shaped Solar Collector Compared to Flat Plate Collector Using CFD
Abstract: Surface Enhancement plays a vital role in augmenting the thermal performance of flat plate collectors. In this paper, an attempt is made to explain in a comparative way the effect of surface geometry of solar flat plate collector having troughs with that of a normal collector. Flat plate collectors with and without troughs of dimensions 1 × 0.5 m is modelled in CATIA V5R19 and meshed using ANSYS ICEM CFD. …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 1–7 Read article
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Numerical Study of Heat Transfer in Six Channeled Dimpled Plate Heat Exchanger
Abstract: Heat transfer augmentation is the most important criteria in many chemical, pharmaceutical and mechanical industry sectors. Considering this factor into account, heat transfer surface modification is being done for heat transfer augmentation purpose. Making dimples on heat transfer surface is one such augmentation technique. This study presents numerical analysis of six channeled counter current dimpled plate heat exchanger, in which the relative depth (dimple depth to diameter ratio (δ/D)) is …
Published in Journal of Thermal Engineering and Applications · Vol. 2, Issue 1, 2015 · pp. 15–25 Read article
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Assessment of Engine Performance with Perforated and Solid Fins
Abstract: Abstract Fins increases the heat transfer from a heat generated device by increasing the surface area of it. Fin with holes or perforated fins increases the surface area available for heat removal but also increases the intensity of the air flow, which further increases the heat removal. A two wheeler engine with fins having circular perforation has been designed in the present work. ANSYS 16.0 has been utilized to solve …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 1–7 Read article
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VRGE Process an Alternative for Conventional Hydraulic Fracturing
Abstract: Abstract Hydraulic Fracture is the name frequently heard now a day in oil and gas Industry especially in exploiting shale gas Reserves. Hydraulic fracturing fluid is made up of water, sand, and chemicals. In this process a high-pressure fluid (usually chemicals and sand suspended in water) will be pumped with high pressure into the oil and gas bearing zone where it create fractures and increase the permeability of the formation. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 3, 2015 · pp. 20–24 Read article
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Statistical Optimization and Decolourization of Methyl Violet Using Peroxisdase from Radish
Abstract: Statistical optimization design based on Response surface methodology for the decolourization of methyl violet using peroxidase from radish (Raphanus sativus) was applied. Effect of four influencing parameters (pH, Temperature, Dye concentration, enzyme volume) on decolourization was studied using One Factor At a Time (OFAT) method. The factors were optimized using RSM based on Box- Behnken design and analyzed for its significance through Analysis of Variance. The optimized operating conditions for …
Published in Journal of Water Pollution & Purification Research · Vol. 1, Issue 1, 2014 · pp. 20–29 Read article
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A Study on Increasing Sensitivity of Microcantilever Biosensor of Different Geometries
Abstract: In this paper, the authors present the activities within their research group on increasing the sensitivity of microcantilever of SU-8/2050. They believe that SU-8 is an interesting polymer for fabrication of cantilevers for biosensing due to its simple processing and low Young’s modulus. They show that the SU-8 cantilever surface can be functionalized directly with receptor molecules for analyte detection, thereby avoiding gold layer. To increase the overall sensitivity of …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 1, 2015 · pp. 1–4 Read article
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Effect of Fly Ash on the Rheological and Filtration Properties of Palm Oil-in-Water Emulsion Based Drilling Fluid
Abstract: The emulsions are considered as most favourable drilling fluid to drill sensitive formations like shales. In this work, an attempt has been made to develop an emulsion using palm oil. The polymers and surfactant were added to the system to improve the emulsion mud characteristics. It was observed that these emulsions were showing favourable rheological properties and poor filtration control characteristics. But, poor filtration properties were further controlled by fly …
Published in Recent Trends in Fluid Mechanics · Vol. 1, Issue 2, 2014 · pp. 33–37 Read article
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A Review on Test Facility for Measuring Pressure Drop in Hydroformed Cryopanel
Abstract: Cryopump is a vacuum pump that pumps the gases and vapors by condensing them on a cold surface, by adsorption on porous surfaces or by trapping mechanism. Helium gas which is very light can only be pumped by Cryoadsorption cryopump. Cryoadsorption cryopump cannot be used when working for continuous operation as it pumps the effluent till the saturation state is achieved. Then the absorbed gases are required to be removed …
Published in Recent Trends in Fluid Mechanics · Vol. 2, Issue 1, 2015 · pp. 21–25 Read article
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Fluid-Structure Interaction Analysis of a Rubber Bellow Segment made of Hyper Elastic Material
Abstract: Fluid-structure interaction (FSI) is the interaction of a moveable and/or deformable structure that is immersed in a fluid and/or contains a fluid. Motion of the structure causes a change in the fluid’s stresses that act on the structure’s wetted surface, which in turn causes a change in the structure’s motion. The present research analyses the deformation produced in a hyper elastic rubber bellow segment due to the pressure generated by …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 2, 2016 · pp. 21–30 Read article
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Optimization of Machining Parameters for Titanium Alloy (Grade-5) Using CBN Tool Insert with Different Nose Radius Using Taguchi Technique
Abstract: In this research paper, focus is on the machinability study of titanium (grade-5) alloy using the CBN cutting tool inserts having nose radius of 0.4 mm and 0.8 mm. Taguchi method provides a simple, systematic and efficient methodology for optimization of the cutting parameters. Taguchi design of experiment approach has been used for planning the experiments and analysis of experimental data obtained. An orthogonal array L27 (313), the signal-to-noise (S/N) …
Published in Trends in Mechanical Engineering & Technology · Vol. 2, Issue 2, 2012 Read article
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Effect of TMT Bar Lugging on Steel Reinforcement Failure Mode under Monotonic Loading
Abstract: Thermo-mechanically treated (TMT) ribbed bars modify the overall progress of failure in reinforced concrete. The ribs maintain anchorage after friction on the rest of the bar is eliminated during deformation, taking up the ultimate compressive load. This however, is inadvertently jeopardized by the stress concentration effect of the rib geometry. This paper analyses the extent to which some of the geometric forms of bar lugging affect the prevalence of ductile …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 8–14 Read article
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Current Trends in Optimization of Parameters of Electric Discharge Machining Process: A Review
Abstract: Wire-cut electrical discharge machining (EDM) is an emerging machining process for machining hard-to-machine materials and intricate shapes which are impossible to make with conventional machining process. The optimum selection of input parameters for the wire electrical discharge machining (WEDM) process is based mainly on the technology used and experience of the operator. This paper reviews the effect of most significant input process parameters of WEDM such as pulse on, pulse …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 25–33 Read article
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Temperature-Programmed Reduction Studies on Fe-promoted Pt/Al2O3 Bimetallic Catalysts
Abstract: Pt/Al2O3-based bimetallic catalysts were prepared using surface organometallic method (SOMC) to obtain catalysts with a nominal promoter to platinum surface atomic ratio of 1:2 and 1:1 (corresponding to typically 0.2–0.4 mass% of the promoting metals; here Fe). Temperature-programmed reduction (TPR) studies showed two distinct temperature regions of hydrogen uptake during reduction by the parent Pt/Al2O3 (5 mass%) and the Fe-promoted catalysts. The shift in peak maxima in the case of …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 2, Issue 2, 2011 Read article
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Supported cobalt-promoted platinum bimetallic nanoparticles – a thermal study
Abstract: The Co-promoted Pt-based bimetallic catalysts were prepared using surface organometallic method (SOMC), to obtain catalysts with cobalt to platinum surface atomic ratio of 1:2 and 1:1. Temperature-programmed reduction (TPR) profiles showed two distinct temperature regions for hydrogen uptake both by the parent 5% Pt/Al2O3 and the Co-promoted catalysts. The shift in peak maxima in the case of promoted catalysts to higher temperatures has been interpreted as a result of formation …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 2, 2012 Read article
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Soap Flotation: A Brief Review
Abstract: Homologues of fatty acids derived from vegetable oils/fats are used as collectors as such or as their soaps in the flotation of silicate/oxide/salt type minerals. Straight chain saturated fatty acid anions are envisaged to form compact adsorbed patches on the mineral surface which are more effective in imparting surface hydrophobicity to the minerals than the loose/fluffy patches formed by unsaturated fatty acid anions that are bent at the double bonds. …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 2, 2016 · pp. 5–8 Read article
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Sodium Benzoate and Urea as Promoters in Sillimanite Flotation
Abstract: Sillimanite is an alumino-silicate mineral with the chemical formula Al2SiO5. Sillimanite in general is concentrated by gravity separation methods followed by froth flotation. Hydrophobicity is induced to sillimanite surface by adsorbing surfactant (oleic acid/oleate) molecules selectively and the mineral is collected into froth as concentrate. Other reagents used are; sodium silicate to depress garnet and silica and sodium hydroxide to adjust the pulp pH. In the present study, hydrotropes (sodium …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 3, 2016 · pp. 1–7 Read article
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Formulation, Development and Evaluation of Oral Thin Film of Metoclopramide Hydrochloride
Abstract: Metoclopramide Hydrochloride, an anti-emetic drug is indicated for the patients with diabetic gastroparesis and Gastro Esophageal Reflux Disease (GERD). It is difficult for a patient to swallow a tablet during emesis. So, an attempt was made to develop a patient-friendly orally dissolving film using clove oil and menthol as flavoring agents, aspartame as sweetener, polyvinyl alcohol and glycerol as film forming agent and plasticizer respectively. Based on appearance and palatability …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 2, Issue 2, 2011 Read article
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Experimental Study of Burn Rate and Mechanism of Burning of Karanja Oil Biodiesel and Diesel by Using a Porous Sphere
Abstract: Biodiesel is a renewable energy resource, which has the potential to reduce greenhouse emissions and to facilitate energy sustainability. It can provide an alternative to petroleum-based diesel. The combustion characteristics of diesel and biodiesel such as burning rate and flame shape are determined by using the porous-sphere experimental technique. Fuel has been transpired to the surface of a porous sphere. Burning of the fuel takes place on the surface of …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 4, Issue 1, 2013 · pp. 8–18 Read article
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Use of Precipitation Data from Advanced Microwave Scanning Radiometer 2 in the Forecasting of Floods in Assam
Abstract: Flood occurs most commonly from heavy rainfall but it can also result from storm surge associated with a tropical cyclone, a tsunami or a high tide coinciding with higher than normal river levels. Rainfall in the upstream of a river can also cause inundation in the downstream side of a river. Reliable and timely information is essential for appropriate flood management system. This paper explains the use of precipitation data …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 1, 2015 · pp. 43–52 Read article