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Wyszukujesz frazę "liquid-liquid flow" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Multiphase flow mixture in 180[degrees] pipe bends
    Autorzy:
    Pietrzak, M.
    Witczak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/185343.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hydrodynamics
    gas-liquid flow
    pipe bends
    hydrodynamika
    przepływ gazu i cieczy
    kolanko
    Opis:
    This paper presents the results of research regarding measurements of the values of pressure drops during horizontal flow of gas-liquid and gas-liquid-liquid mixture through 180o pipe bends. The conducted insightful analysis and assessment during multi-phase flow in pipe bends has enabled to develop a new method for determination of their values. This new method for determining pressure drops ensures higher precision of calculation in comparison to other methods presented in literature and can be applied for calculation of these parameters during multi-phase flows in pipe bends with various geometries.
    Źródło:
    Chemical and Process Engineering; 2013, 34, 2; 227-239
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric sensitivity of a CFD model concerning the hydrodynamics of trickle-bed reactor (TBR)
    Autorzy:
    Janecki, D.
    Burghardt, A.
    Bartelmus, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/184944.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hydrodynamics
    trickle-flow regime
    pressure gradient
    liquid holdup
    phases interaction
    CFD
    hydrodynamika
    gradient ciśnienia
    Opis:
    The aim of the present study was to investigate the sensitivity of a multiphase Eulerian CFD model with respect to relations defining drag forces between phases. The mean relative error as well as standard deviation of experimental and computed values of pressure gradient and average liquid holdup were used as validation criteria of the model. Comparative basis for simulations was our own data-base obtained in experiments carried out in a TBR operating at a co-current downward gas and liquid flow. Estimated errors showed that the classical equations of Attou et al. (1999) defining the friction factors Fjk approximate experimental values of hydrodynamic parameters with the best agreement. Taking this into account one can recommend to apply chosen equations in the momentum balances of TBR.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 1; 97-107
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure drop in two-phase gas-liquid (Taylor) flow in microreactors
    Autorzy:
    Cygański, P.
    Sobieszuk, P.
    Pohorecki, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/185780.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    przepływ Taylora
    przepływ gaz-ciecz
    spadek ciśnienia
    mikroreaktor
    gas-liquid Taylor flow
    microreactor
    pressure drop
    Opis:
    The pressure drop in microreactors for the gas - liquid Taylor flow was measured for 4 different microreactor geometries and 3 different gas - liquid systems. The results have been compared with the existing literature correlations. A selection of the best correlations has been made.
    Źródło:
    Chemical and Process Engineering; 2012, 33, 3; 369-384
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Absorption of CO2 into perfluorinated gas carrier in the Taylor gas–liquid flow in a microchannel system
    Autorzy:
    Sobieszuk, P.
    Pilarek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/185397.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    perfluorodecalin (PFD)
    liquid gas carrier
    solubility
    Taylor flow
    microreactor
    perfluorodekalina (PFD)
    gaz ciekły
    rozpuszczalność
    przepływ Taylora
    mikroreaktor
    Opis:
    The aim of this study was to determine the solubility of CO2 in perfluorodecalin (PFD) which is frequently used as efficient liquid carrier of respiratory gases in bioprocess engineering. The application of perfluorinated liquid in a microsystem has been presented. Gas-liquid mass transfer during Taylor (slug) flow in a microchannel of circular cross section 0.4 mm in diameter has been investigated. A physicochemical system of the absorption of CO2 from the CO2/N2 mixture in perfluorodecalin has been applied. The Henry’s law constants have been found according to two theoretical approaches: physical (H = 1.22x10-3 mol/m3Pa) or chemical (H = 1.26x10-3 mol/m3Pa) absorption. We are hypothesising that the gas-liquid microchannel system is applicable to determine the solubility of respiratory gases in perfluorinated liquids.
    Źródło:
    Chemical and Process Engineering; 2012, 33, 4; 595-602
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the liquid flow in a vessel with a rotating disk at the liquid surface
    Autorzy:
    Suchecki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/184934.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    liquid flow
    rotating disk
    von Kármán’s equations
    velocity field
    digital particle image
    velocimetry
    przepływ cieczy
    dysk obrotowy
    równanie von Karmana
    pole prędkości
    Opis:
    This study is concerned with liquid flow induced by a disk which rotates steadily around its axis and touches the free surface of liquid contained in a cylindrical vessel. It is a simplified model of the flow in the inlet part of a vertical cooling crystallizer where a rotary distributor of inflowing solution is situated above the free surface of solution contained in the crystalliser. Numerical simulations of flow phenomena were conducted and the simulation results were interpreted assuming an analogy with Kármán’s theoretical equations. In a cylindrical coordinate system, the components of flow velocity were identified as functions of distance from the surface of the rotating disk. The experimental setup was developed to measure velocity fields, using digital particle velocimetry and optical flow. Conclusions concerning the influence of disc rotation on liquid velocity fields were presented and the experimental results were found to confirm the results of numerical simulation. On the basis of simulation data, an approximation function was determined to describe the relationship between the circumferential component of flow velocity and the distance from the disk.
    Źródło:
    Chemical and Process Engineering; 2014, 35, 1; 3-18
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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