Results 241 to 250 of about 11,477,062 (289)
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Pulsations of the mass flow rate during pressure relief
International Journal of Thermal Sciences, 2003Abstract During two-phase flow blowdown from pressure vessels considerable pulsations of the discharged mass flow rate were found. Regions of mass flow rate instability were predicted by a linear stability analysis. The pulsations are caused by the following closed feedback circuit: boil up – level swell – void fraction of the discharged mixture ...
Lucas, D., Prasser, H.-M.
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Digital measurement of the mass-flow rate
Sensors and Actuators A: Physical, 1994Abstract This paper introduces the design and implementation of a gas mass-flow rate digital meter. It employs hybrid processor circuitry in such a way that the output is displayed digitally through a novel dual-slope-type non-linear analogue to digital conversion (ADC). An analogue output mass-flow rate measurement is also obtainable.
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A Model for EGR Mass Flow Rate Estimation
SAE Technical Paper Series, 1997<div class="htmlview paragraph">This paper describes a model for EGR mass flow rate estimation as a function of signal smeasured by existing sensors in an internal combustion electronically controlled engine. An original approach is presented to take into account the heat transfer between the EGR duct and the environment.
P. M. Azzoni +3 more
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The Momentum Principle Measures Mass Rate of Flow
Journal of Fluids Engineering, 1954Abstract The operation of a flowmeter which accurately measures the mass flow of fluid is described. Compared with conventional flowmeters, this instrument has many advantages, including a linear torque output easily adaptable to direct reading, remote indication, or control initiation. It is more easily installed in pipe lines than most
V. A. Orlando, F. B. Jennings
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Measurement of Mass Flow Rate by Employing Thermometry
Heat Transfer, Part B, 2005Sudden changes of flow temperature along a tube are common in industrial applications. One may suggest those changes can be related to the flow rate. The current work presents a feasibility analysis to evaluate the mass flow rate by measuring changes of temperature at two positions along a tube wall separated by a known distance.
Jean F. B. Machado +4 more
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Mass flow rate for nearly-free molecular slit flow
Journal of Fluid Mechanics, 1969The local and average mass flow rates for nearly free molecular flow through a two-dimensional slit are determined for several tank pressure ratios. The equilibrium gas in the two tanks and the container walls are assumed to be at the same temperature and the Willis iterative method with the Bhatnager-Gross-Krook model is used for the analysis.
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Air mass balance for mass flow rate calculation in pneumatic conveying
Powder Technology, 2010Abstract Mass flow rate of solids is probably the most important parameter in pneumatic conveying systems. It is a challenging task to measure this parameter in gas–solid flows. A new and simple model is presented and described to calculate the mass flow rate of solids in pneumatic conveying systems, based on air flow and pressure measurements.
Cecilia Arakaki +4 more
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Measuring Flow Angle and Mass Flow Rate in an Unknown Flowfield
Journal of Spacecraft and Rockets, 1979A data reduction technique applicable to constant-temperature hot-film and hot-wire probes is presented which is used to determine flow angle and mass flow rate in an unknown flowfield over a wide range of flow conditions at supersonic and hypersonic velocities.
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Prediction of leakage mass flow rate through gas springs
Journal of Propulsion and Power, 1987A general analysis has been carried out, dealing with gas spring operation, with particular reference to free-piston Stirling engine applications. Previous work, based on the assumption that losses due to gas leakage are negligible, provided an energetic model together with an experimental method suitable for the evaluation of the convection heat ...
Roberto Bruno Bossio +3 more
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Mass flow rate measurements in a heterogeneous medium
AIAA Journal, 1971References 1 Davies, L. and Wilson, J. L., "The Influence of Shock and Boundary Layer Interaction on Shock Tube Flows," A.R.C. 29 064-Hyp. 615, May 1967, National Physical Lab., Teddington, England. 2 Lap worth, K. C., The High Temperature Aspects of Hypersonic Flow, AGARDograph 68, Pergamon, N.Y., 1964, pp. 255267. 3 Richmond, J. K. and Parson, R. J.,
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