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Showing 1 to 20 of 814 for “"Flow field"”.
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Development of nonintrusive flow field imaging diagnostics
Includes bibliographical references.
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Flow-field structure in wide-angled diffusers
Includes bibliographical references (leaves 121-131).
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A secondary flow approach to the inlet vortex flow field
… (or ground vortex) phenomenon. The vorticity field associated with the vortex is investigated using a secondary flow approach. In this approach the flow is assumed to be composed of an irrotational primary flow and a weak shear flow, with the vortex filaments associated with the latter being …
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Flow field modifications and wave development in a plane Poiseuille flow
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Multi-Property Internal Flow Field Quantification using Molecular Filtered Rayleigh Scattering
… the multi-property quantification of internal flow fields. Validation is challenging in applying computational fluid dynamics (CFD) solutions to real-world scenarios, necessitating benchmark measurements with well-defined uncertainties. The ideal instrument for achieving the required …
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Experimental investigation of the flow field in a missile launch tube
An investigation of the flow field during eject of a cruise missile from the launch tube was undertaken using a "cold" flow simulation. A facility was developed whereby various design changes in the missile ejection apparatus, denoted the vertical support assembly, could be quickly and easily …
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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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Doppler global velocimetry measurements in a wing flow field with tip blowing
A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the …
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Experimental investigation of the flow field during combustion in narrow circular ducts
… was studied with the intent of determining the flow structure that underlay the observed oscillatory motion. The fluid motion during the oscillations was visualized by seeding TiO2 micron-sized particles. Particle Streak Velocimetry was used to obtain flow-field measurements during the …
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Post-stall hysteresis and flow field unsteadiness on an NACA 0012 airfoil
The current study was conducted to understand flow field unsteadiness associated with static stall hysteresis on an NACA 0012 airfoil at Rec = 1.0 × 10^6. Unsteady pressure measurements were acquired to evaluate the performance of the airfoil, and a hysteresis loop was identified in the vicinity of …
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A new method for calculating the flow field in a dump combustor
An elliptic/parabolic procedure for solving the flow field in a dump combustor is described. The elliptic calculation is used at the dump combustor entrance and a parabolic calculation downstream. The calculations are restricted to steady axisymmetric nonreactive incompressible flow. A great …
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Flow Field Computations of Combustor-Turbine Interactions in a Gas Turbine Engine
… between the combustor and turbine. The flow field at a combustor exit shows non-uniformities in pressure, temperature, and velocity in the pitch and radial directions. This inlet profile to the turbine can have a considerable effect on the development of the secondary flows through the …
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Flow Field and Soot Formation Characteristics in Swirl-stabilized Non-premixed Turbulent Flames
Soot formation and evolution in relation with the flow fields were investigated experimentally in turbulent swirl-stabilized non-premixed flames using three different fuels: methane, ethanol and aviation Jet A-1. The studied flames were confined and stabilized in a model gas turbine combustor with …
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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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Effect of Heat Transfer on Flow Field at Low Reynolds Numbers in Verticaltubes
Made available in DSpace on 2014-12-05T17:15:30Z (GMT). No. of bitstreams: 1 6000230.pdf: 8147700 bytes, checksum: 7c04c8e1ee39e0ce32c266eac3d9694f (MD5) Previous issue date: 1959
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Characterization of the flow field response to vaneless space reduction in centrifugal compressors
The unsteady three-dimensional flow field for two centrifugal compressors of nearly identical design (one with a marginally smaller impeller-diffuser gap) is interrogated to assess the difference in the time averaged performance and unsteady loading characteristics of the impeller blades. …
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Flow/field model of a hot magnetized plasma interacting with a cold neutral atmosphere
… that possess neither an intrinsic magnetic field nor a significant ionosphere have not been well studied. We have constructed a model to simulate the interaction between a hot magnetized plasma and a planet containing only a neutral atmosphere. Examination of the boundary conditions that …
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