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 11 of 11 for “"choked flow"”.
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An investigation on the variation of the pressure distribution for compressible laminar flow in a choked-flow tube due to changes of the back pressure
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1961
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Supersonic flow field visualization studies of the MÅ = 6 price waverider planform
Supersonic tests of the conical flow derived MÅ Ê» = 6 (design) Price waverider planform were conducted using the Naval Postgraduate School wind tunnel. These tests are part of a continuing effort to study the characteristics of waverider configured vehicles. Two sting-mounted, flat-plate …
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Intradermal needle-free powdered drug injection
… This device uses a jet of gas undergoing choked flow to entrain powder and subsequently penetrates through the skin for delivery of the powder. Different nozzle designs and orifice geometries are also explored. In vitro injection of polymer beads (1-5 [mu]im in diameter) into porcine …
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Novel turbomachinery concepts for highly integrated airframe/propulsion systems
… to achieve higher pressure ratio, choking mass flow, and efficiency (referenced to an adiabatic, reversible process) at fixed corrected speed, with greatest benefit occurring through front-stage cooling. Heat removal equal to one percent of inlet stagnation enthalpy flux in each of the first …
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A study of gas-solids flows at very high speed
An investigation of the flow of suspensions of solids particles in gases at high flow velocities has been carried out. A literature survey into gas-solids flow at both low and high speeds has revealed that most of the existing work on high speed flows is of a theoretical nature and has been …
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Flooding and non-equilibrium in counter-current flows with reference to pressurised water reactors
… The experiments involved the countercurrent flows of air and water and the data were compared with existing flooding correlations for tubes. The comparison revealed the inadequacy of the existing correlations. In the Phase 1 test section arrangement, it was found experimentally that, as the …
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Numerical Examination of Flow Field Characteristics and Fabri Choking of 2D Supersonic Ejectors
… Fabri choke and Fabri block aerodynamic flow patterns. The effect of primary to secondary stagnation pressure ratio on the efficiency of the ejector operation is measured using the entrainment ratio which is the secondary to primary mass flow ratio. The primary flow of the ejector is …
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A MEMS valve for the MIT Microengine
… have demonstrated repeatable valve functions and choked flow characteristics. MIT has initiated a project to build a micro-scale gas turbine generator for high power density output in applications such as portable power source or micro air vehicles. For closed-loop operation, a valve is required …
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Tyre Inflation Pressure control to improve vehicle ride comfort on rough roads
… discharge coefficient is approximately 0.07 for choked flow and tappers off to zero for unchoked flow. Also, tests show that the tyre can be inflated from 1.0 bar to 3.0 bar in 8 s and deflated from 3.0 barto 1.0 bar in 13 s. The APG bump tests and Belgian paving tests were conducted to validate …
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The effects of micro-vortex generators on normal shock wave/boundary layer interactions
… interactions (SWBLIs) are complex flow phenomena that are important in the design and performance of internal supersonic and transonic flow fields such as engine inlets. This investigation was undertaken to study the effects of passive flow control devices on normal shock …
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An experimental study of the aft guide vanes of an engine bypass nacelle for low-boom supersonic flight
… is created during this process. The high-flow nacelle bypass geometry includes a forward and aft fairing to direct the flow around the gearbox, a set of thin forward guide vanes, and a set of thick, strut-like aft guide vanes. The aft guide vanes, which also serve structural purposes, are …