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Showing 1 to 8 of 8 for “"valveless"”.
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Modeling, simulation, and fabrication of a PZT valveless micropump
… tested, and implemented. Among them, a PZT valveless micropump is receiving increasing attentions due to its unique advantages over a conventional check-type micropump. A valveless micropump is short of fatigue and wear of movable part. Without movable parts in the device may avoid …
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Investigation on the Performance Characteristics of Two Valveless Pulse Jets Operating in Phase Opposition
… by an earlier investigation done on a single valveless pulse jet engine at the University of North Dakota by Roger W. Engebretson. It was thought that if two of these engines could be coupled in such a manner that they would fire alternatively, the performance per engine could be improved. A …
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Fluidic Jet Turbulence Generators for Deflagration to Detonation Transition in Pulsed Detonation Combustors
… The test rig used for this study consists of a valveless pulse detonation combustor operating at near-ambient conditions supplying air at a rate of (0.05-0.1)kg/s and equivalence ratios of 1.0 to 1.3 using Ethylene fuel. Experimental studies comprised of four phases of testing : full obstacle …
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Conceptual evaluation of hydrogen hybrid combustion for heavy-duty engines using CFD modelling
… of a dual injector setup. A simplified valveless model and a detailed single-cylinder model were used to analyse flow and combustion characteristics at a fixed engine operating point (1000 RPM, single load). Results showed that increasing the nozzle flow area raised the peak apparent …
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Analytical and Experimental Investigation of Insect Respiratory System Inspired Microfluidics
… and analyzed, and insect-mimetic PDMS-based valveless microfluidic devices were fabricated and tested. It was found that not only are these devices are capable of pumping fluids very efficiently using insect-mimetic actuation techniques, but also that the fluid flow direction and magnitude …
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Numerical Simulations of Pulsejet Engines
North Carolina State University Theses Mechanical and Aerospace Engineering.;North Carolina State University Theses Mechanical and Aerospace Engineering.
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Development of light actuated chemical delivery platform on a 2-D array of micropore structure
<p>Localized chemical delivery plays an essential role in the fundamental information transfers within biological systems. Thus, the ability to mimic the natural chemical signal modulation would provide significant contributions to understand the functional signaling pathway of biological cells and …