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  • Modelling of the Parameters of Air-Flow in Pneumatic ...

    Key words: pneumatic nozzle, air-flow parameters, pneumatic linking, filament yarns. n Introduction The basic element in the technique and technology of the pneumatic interlacing of yarns is a pneumatic device known as an interlacing nozzle. There are many companies in the world producing such elements; however, they mainly offer noz-

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  • METHODOLOGY FOR DETERMINING THE PARAMETERS

    2019-5-9 · the airflow parameters of a scalper-type pneumatic separator by studying the structure and air speed diagrams in the sections of the air distributor, the pneumatic separating and sedimentation chambers. METHODS OF RESEARCH A special novelty in the study of airflow parameters of a pneumatic separator is a two-stage sedimentary chamber and a suction

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  • Research on Laval Nozzle and Overall Simulation Analysis ...

    their simplified model of the two stages. Use of computational fluid dynamics (CFD) to simulate the Structural parameters of Laval nozzle-- pneumatic turbine and analyzed the gas flow and flow rate. The simulation results show that the airflow impinges on the turbine …

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  • Aerodynamic noise analysis of a portable pneumatic ...

    2017-9-1 · Changes of the geometric parameters of the fan can induce variations in the airflow field, thus modulating the resulting aerodynamic noise. This article describes how certain parameters influence the aerodynamic noise of a portable pneumatic extinguisher; the research object of this study was the 6MF-30 portable pneumatic extinguisher.

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  • Pneumatic Conveying Systems - CED Engineering

    2020-10-19 · Pneumatic conveying can be used for particles ranging from fine powders to pellets and bulk densities of 16 to 3200 kg/m3 (1 to 200 lb/ft3). As a general rule, pneumatic conveying will work for particles up to 2 inches in diameter @ typical density. By 'typical density' we mean that a 2 inch particle of a polymer resin can be moved via pneumatic

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  • Airflow Instruments | TSI

    2001-3-1 · Our cross-hole type curves are modified after Hsieh and Neuman [1985] to consider single-phase airflow and extended to consider the effects of storage and skin in monitoring intervals. Cross-hole type curves of pressure derivatives and recovery are included for improved pneumatic …

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  • Type curve interpretation of a cross‐hole pneumatic ...

    2013-9-15 · In the airflow structure, compressed air could flow through a perforated seedbed and blow the seeds in a 'boiling' movement. Based on the airflow structure, a centralized pneumatic metering device for maize was designed. The working principle was expounded here, and the key structural parameters …

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  • Design and experiment of centralized pneumatic seed ...

    2005-9-1 · The Standard ISO 6358 offers two parameters: the sonic conductance C and the critical static pressure ratio b , but the parameters can not be directly utilised in an analysis of a pneumatic system. In the standard analysis there is applied the airflow coefficient μ, but it …

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  • Conversion of the sonic conductance c and the critical ...

    We use log permeability and porosity data obtained from single-hole pneumatic packer tests in six boreholes drilled into unsaturated fractured tuff near Superior, Arizona, to postulate, calibrate and compare five alternative variogram models (exponential, exponential with linear drift, power, truncated power based on exponential modes, and truncated power based on Gaussian modes) of these ...

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  • Maximum likelihood Bayesian averaging of airflow

    The relative SPAN factor (RSF) was also calculated. A model to predict variations in D50 was fitted using the aforementioned parameters.The results show that variations in the diameter of the spout significantly change the droplet size, producing a mean increase of 59.45% in …

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  • Developing strategies to reduce spray drift in

    In this paper, a mathematical model for the pneumatic transport of micron silica particles in the dust removal pipeline is established, and the gas-solid two-phase flow in the pipeline is numerically simulated. This paper is mainly based on the FLUENT fluid simulation module in ANSYS WORKBENCH to simulate the motion behavior of particles in the pipeline, and obtained the penetration rate ...

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  • Modelling of the Parameters of Air-Flow in Pneumatic ...

    Key words: pneumatic nozzle, air-flow parameters, pneumatic linking, filament yarns. n Introduction The basic element in the technique and technology of the pneumatic interlacing of yarns is a pneumatic device known as an interlacing nozzle. There are many companies in the world producing such elements; however, they mainly offer noz-

    Get Price
  • METHODOLOGY FOR DETERMINING THE PARAMETERS

    2019-5-9 · the airflow parameters of a scalper-type pneumatic separator by studying the structure and air speed diagrams in the sections of the air distributor, the pneumatic separating and sedimentation chambers. METHODS OF RESEARCH A special novelty in the study of airflow parameters of a pneumatic separator is a two-stage sedimentary chamber and a suction

    Get Price