Results 151 to 160 of about 159,512 (193)
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A Pneumatic Probe for Measuring Spatial Derivatives of Stagnation Pressure
Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, 2019Abstract This paper introduces a pneumatic 9-hole probe which can measure flow angles, stagnation and static pressures, and spatial derivatives of stagnation pressure. It does this through direct measurement at a single location, rather than empirical corrections using measurements at multiple points.
Christopher J. Clark, S. D. Grimshaw
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Stagnation Pressure, the Bernoulli Equation, and the Steady-Flow Energy Equation [PDF]
International Journal of Mechanical Engineering Education, 2011 The Bernoulli equation is arguably the most commonly used equation in fluid mechanics. For the incompressible, inviscid flow along a streamline, the Bernoulli equation states that the total head of the fluid (the sum of the pressure head, velocity head, and elevation head) is constant.
Ali Vakil, Sheldon I. Green
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A Stagnation Pressure Probe for Supersonic and Subsonic Flows
Aeronautical Quarterly, 1974SummaryThe usefulness of a probe which can sense the absolute value of the stagnation pressure in supersonic flow has long been recognised. In the past such a probe has not been available and therefore it has been necessary to infer this fundamentally important flow property from measurements of other properties.
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The Effect of Nonuniform Viscosity on Stagnation Point Pressure
Journal of Fluids Engineering, 2011For high Reynolds number flows the total pressure remains constant along stream lines. At low Reynolds numbers the total pressure decreases in a global sense due to the actions of viscosity, but it may increase locally in regions such as stagnation points. Previous studies have considered the case of constant viscosity flow.
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Velocity–pressure correlation in stagnation and separation regions on surface-mounted prisms
Journal of Wind Engineering and Industrial Aerodynamics, 1998Experiments are presented for a 1:50 scale model of the Wind Engineering Research Field Laboratory (WERFL) experimental building located on the Texas Tech University campus in Lubbock, Texas. The model was immersed in three different boundary layers generated in the Clemson University wind tunnel.
Tieleman, H.W. +4 more
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Randomised, controlled pilot to compare collagen and foam in stagnating pressure ulcers
Journal of Wound Care, 2012Objective: To compare the clinical efficacy of a collagen dressing covered with a foam dressing with the same foam used as a primary dressing in stagnating granulating pressure ulcer patients. Method: Patients were randomised to receive either a foam dressing (Suprasorb P; Lohmann & Rauscher) as a primary dressing (group A), or a combination of a ...
A Andriessen +5 more
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Development and application of stagnation pressure probe for dusty gas measurements
Review of Scientific Instruments, 1995The design, development and application of a fast response probe for measuring gas phase pressures under dusty flow conditions are described. Measured results for this probe, historically designated as the ‘‘Snob’’ probe, demonstrate satisfactory resolution of past limitations on output performance.
S. A. Peabody +4 more
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Stagnation temperature and pressure distortion effects upon the response of an aerofoil
International Journal of Heat and Fluid Flow, 1980Abstract A series of experiments is described in which an uncambered aerofoil, set at a constant incidence was traversed incrementally through a range of combined stagnation temperature/stagnation pressure distortions. Measurement of the static pressure distribution around the aerofoil yielded lift coefficient variations.
R.E. Peacock, A.A.F. Hashem
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Inlet Stagnation Pressure Loss Estimate for a Simplified Thrust Model
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009In a previous work, the author presented a simplified thrust model to be used in predicting the performance of high-speed aircraft. That model contained an ad hoc estimate of the stagnation pressure loss in the inlet/diffuser of the engine. The current analysis attempts to capture some of the actual physics of the flow, modeling the incoming flow as a ...
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Prediction of inviscid stagnation pressure losses in supersonic inlet flows
AIAA Journal, 1990An effort is made to quantify the stagnation pressure losses associated with shock-wave systems that may be present in such high Mach number flows as those of scramjet hypersonic diffusers. If the shock-related contribution turns out to be much larger than that attributable to viscous effects, a designer could introduce methods for the minimization of ...
William J. Rae +2 more
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