Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"liquid jets"”.
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Hydrodynamics of impinging liquid jets used in cleaning
Impinging liquid jets are widely used in industrial cleaning-in-place (CIP) systems to remove residual product or soil layers from the internal surfaces of process equipment such as tanks and vessels. The optimisation of these cleaning operations is often done empirically as a large number of …
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Heat transfer to turbulent and splattering impinging liquid jets
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Mixing and atomization by impingement of unconfined liquid jets
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Chemical Engineering, 1949.
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Flow fields created by impinging liquid jets and applications in cleaning
… as 70%) is used just for cleaning. Impinging liquid jets are frequently used for cleaning operations and currently, almost all industrial cleaning systems are based on empirical results. In an effort to develop efficient and sustainable cleaning systems, I have studied the flow field created …
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Impingement splattering and surface disturbance evolution on turbulent liquid jets in gases
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Digital holography for exploring instabilities and breakup of liquid jets in supersonic crossflows
Direct injection studies of liquid jets in supersonic crossflows (JICFs) are critical for understanding combustion in scramjet engines. Exploring these fluid dynamic interactions is not only an important step towards characterizing fundamental liquid breakup properties but also key for improving …
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Transient behavior of liquid jets injected normal to a high velocity gas stream
… effects of the breakup and atomization of liquid jets in a crossflow on the size of droplets within the spray plume was experimentally determined. Water and water/methanol mixtures were injected normal to a high velocity air stream at Mach numbers of 0.48 and 3.0 with ambient stagnation …
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The effects of surface roughness on stagnation-point heat transfer during impingement of turbulent liquid jets
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Effect of physical properties on break-up and atomization of liquid jets in a supersonic crossflow
… on the break-up and atomization of a transverse liquid jet in a supersonic airstream was conducted. The tests were run at Mach 3 with ambient stagnation temperature and stagnation pressure of 2.4 atm. Viscosity and surface tension of the injectant along with the injector diameter and the ratio of …
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An experimental and theoretical investigation into the break-up of curved liquid jets in the prilling process
… study of the dynamics of the break-up of curved liquid jets is presented. This work is motivated by an industrial process called prilling which is used in the manufacture of pellets. In this process a sieve-like cylindrical can spins rapidly on its central vertical axis. Molten liquid is pumped …
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
… of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. These processes …
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
… of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. These processes …
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Capillary Liquid Chromatography Using Micro Size Particles
… be realized using small particles (~ 1 µm) in liquid chromatography (LC). However, due to the large pressure drop caused by small particles, conventional LC pumping systems cannot satisfy the pressure requirements needed to drive the mobile phase through the column. Use of ultrahigh pressure, …
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Numerical study of the nonlinear dynamics of the acoustic drops and bubbles
The dynamics of liquid drops and bubbles held together by surface tension and perturbed by small disturbances is of great interest to many researchers. Its essential physical nature is characterized by a nonlinear moving-boundary problem complicated by the interfacial stress interaction between two …
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Response of Electrified Micro-Jets to Electrohydrodynamic Perturbations
The breakup of liquid jets is ubiquitous with rich underpinning physics and widespread applications. The natural breakup of liquid jets originates from small ambient perturbations, which can grow exponentially until the amplitude as large as the jet radius is reached. For unelectrified inviscid …
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Gas Jet Process for Production of Sub-micron Fibers
… bears relationship with capillary number of the liquid jet and polymer concentration in the solution. Several levels of fiber conglutination are observed as function of the collection distance from the nozzle. The dynamics of the formation of the fiber in the GJF process was inferred from the …
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Experimental Investigation of Jet Breakup at Low Weber Number
… investigation on the disintegration of circular liquid jets, ejected into a stagnant ambient atmosphere at low Weber number, is presented in this thesis. The process of breakup of the liquid jet was captured using a real-time image processing high-speed digital camera system. In order to …
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Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean
… many LIBS researchers have focused their work on liquid jets or surfaces, little at- tention has been paid to bulk liquid analysis, and especially to the effect of oceanic pressures on LIBS signals. In this work, laboratory experiments validate the LIBS technique in a simulated deep ocean …
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Process Applications of NMR
… applications of NMR techniques to flowing liquid streams to obtain quantitative information about the contents of the streams. The quantitative accuracy of NMR spectroscopy for composition measurement of liquid mixtures is measured as ±0.34 mol% and ±1 mol% for static and flowing mixtures …
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Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean
… many LIBS researchers have focused their work on liquid jets or surfaces, little attention has been paid to bulk liquid analysis, and especially to the effect of oceanic pressures on LIBS signals. In this work, laboratory experiments validate the LIBS technique in a simulated deep ocean …
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