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Showing 1 to 20 of 45 for “"Impinging jet"”.
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Polymer-induced turbulence modifications in an impinging jet
… turbulence characteristics in a submersed liquid impinging-jet configuration. Turbulent impinging jets are commonly used in technological applications such as drying, scouring, cooling or heating due to an enhancement in transport characteristics in the impingement region under certain …
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Particulate Deposition Prediction of Diluted Two-Phase Impinging Jet
… particle transport and deposition process in impinging jet flow, in light of the available experiments, can be gained using computational fluid dynamics (CFD) numerical simulations. The present thesis focuses mainly on the prediction of aerosol particle transport and deposition in impinging …
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Active noise control of supersonic impinging jet using pulsed microjets
… concerns an active noise control of supersonic impinging jet flow using unsteady microjet injection. Supersonic impinging jet involves several problems such as lift loss, ground erosion, significant noise pollution, and sonic fatigue, all of which are dominated by impinging tones mainly caused …
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Investigation on the Interaction of an Impinging Jet with Cylinder Wakes
<p>Jet impingement cooling is a widely used cooling method due to the high heat transfer rates associated with it. Research for improving heat transfer rates for this cooling is still being carried out due to its broad application in various fields like gas turbine blade cooling, electronic …
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High Speed Impinging Jet Plating: Slot Jet and Through-Hole Plating
The characteristics of two different impinging jet plating systems was investigated in this study. The local mass transfer rates for slot jet system were measured with use of sectioned electrode technique and were compared with the other previous studies. Based on the measured mass transfer …
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Numerical and Experimental Investigation of Single and Two-Phase Impinging Jet Heat Transfer
… investigation of single and two-phase impinging jet heat transfer was carried out. Various parameter effects on impinging jet heat transfer were tested numerically e.g. geometric parameters, Biot number, fin structure and presence of a baffle in the jet flow. An experimental set-up was …
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EFFECTS OF WALL PLANE TOPOLOGY ON VORTEX-WALL INTERACTIONS IN A FORCED IMPINGING JET
… flow consisting of an acoustically forced impinging jet. The goal of the current investigation is to quantify the effects of disturbances to the ground-plane boundary layer on the three-dimensional development of the vortex ring as it interacts with the ground plane. A small radial fence is …
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Numerical simulation of heat transfers on a circular cylinder by an impinging jet with nanofluid
Impinging jets are a best method of achieving particularly high heat transfer over a surface circular cylinder, flat plate and concave surface are subjects of interest in many research studies over the past decades. In terms of cooling surfaces in many engineering applications had been devised to …
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Experimental investigation of the effect of sonication on the precipitation of grieseofluvin by impinging jets
… (API) in the nano/micro particle range. Impinging jets is one of the most promising techniques to do so. In this work, a submerged impinging jet system coupled with an ultrasonic probe (sonicator) was used to precipitate Griseofulvin, a common, poorly water-soluble antifungal drug. The …
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Modeling and Simulation of Antisolvent Crystallization: Mixing and Control
… in a semibatch stirred vessel and an impinging jet crystallizer. The effects of the operational variables on the crystal size distribution and polymorphic form were numerically investigated. The second part focuses on the theoretical development and analysis of control strategies …
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Development of Facilities for the Testing of Shear Stress Sensors
… under various temperatures and pressures, an impinging jet to test the sensor under an aerodynamic shear stress, and finally, a hypersonic wind tunnel in which the performance criteria will be tested in combination.
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The Use of Solubility Parameters to Select Membrane Materials for Pervaporation of Organic Mixtures
… process temperature, permeate pressure, impinging jet heights, feed flow rates and concentrations, and pre-soaking the membrane; on flow rate and selectivity in a polyethylene membrane. Membrane thickness was the dominant factor in membrane selectivity; the thinnest membranes (11.3-14.8 …
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Microjet based noise control of supersonic jets on carrier decks
The effectiveness of ground plane water microjet control on the noise generated by a supersonic, ideally expanded, Mach 1.5, impinging jet was determined. Using a converging-diverging nozzle with a design Mach number of 1.5, the jet was operated at temperatures ranging from 60 to 1700°F. Six …
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The effect of entrainment on jet impingement heat transfer
… the heat transfer to a single, plane, turbulent impinging jet. Solutions to the momentum and energy equations were obtained with similarity and series analyses. The analytical model is compared with measured heat transfer rates to single air jets impinging normally on an isothermal heated …
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Characterisation of turbulent mixing and its influence on antisolvent crystallisation
… continuous mixers of various sizes including an impinging jet mixer and a vortex mixer have been characterised over a variety of mixing conditions. The antisolvent precipitation of valine in a confined impinging jet mixer was explored and analysed in conjunction with the mixing characterisation …
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Quantification of the Fire Thermal Boundary Condition
… apparatus. The apparatus consisted of an impinging jet assembly, a tungsten lamp, and a gage holster assembly. The impinging jet was used to expose the gage to isolated convection and the lamp was used to expose the gage to isolated radiation. The gage holster assembly was used to water …
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Optimal Control of Antisolvent and Cooling Crystallization
… of antisovlent crystallization in dual impinging jet crystallizer and cooling crystallization in tank, which can be used to develop a continuous crystallization method in industry.
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Active noise control in supersonic impinging jets using pulsed microjets : actuator design, reduced-order modeling
… years, it has been demonstrated that direct microjet injection into the shear layer of the main jet disrupts the feedback loop inherent in high speed impinging jet flows, thereby significantly reduces the adverse effects. The amount of noise reduced by microjet actuation is known to be dependent …
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