Results 261 to 270 of about 1,158,286 (309)
Mass flow rate measurements in gas micro flows
Experiments in Fluids, 2006 The main objective of this experimental investigation on the gas flow slip regime is to measure the mass flow rate in isothermal steady flows through cylindrical micro tubes. Two technical procedures devoted to mass flow rate measurements are compared, and the measured values are also compared with the results yielded by different approximated ...
Timothee Ewart +2 more
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Mass Flow Rate Measurements in Microchannels
ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 2009Mass flow rate measurements in a single silicon micro channel were carried out for various gases in isothermal steady flows. The results obtained from hydrodynamic to near free molecular regime by using a powerful experimental platform, allowed us to deduce interesting information, notably about the reflection/accommodation process at the wall.
Irina A. Graur +2 more
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, 2013 The melt mass-flow rate and the melt volume-flow rate determine the processing conditions for thermosetting plastics, and in recycled materials, they are indicators of the susceptibility of polymers to recycling and its frequency. This paper investigates the melt mass-flow rate and the volume-flow rate of ABS subject to the number of thermal ...
Mazur, Piotr, Chełstowski, Karol
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Mass Flow Rate Measurements in Nitrogen Flows
ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 2006The main objective of this experimental investigation on the gas flow slip regime is to measure the mass flow rate in isothermal steady flows through cylindrical micro tubes. Two technical procedures devoted to mass flow rate measurements are compared, and the measured values are also compared with the results yielded by different approximated ...
Pierre Perrier +3 more
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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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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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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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