Experimental investigation of the two-phase flow regimes and pressure drop in horizontal mini-size rectangular test section

• Autorzy: Elazhary A. , Soliman H.
• Języki publikacji: EN

Abstrakty

EN

An experimental study was conducted in order to investigate two-phase flow regimes and fully developed pressure drop in a mini-size, horizontal rectangular channel. The test section was machined in the form of an impacting tee junction in an acrylic block (in order to facilitate visualization) with a rectangular cross-section of 1.87-mm height on 20-mm width on the inlet and outlet sides. Pressure drop measurement and flow regime identification were performed on all three sides of the junction. Air-water mixtures at 200 kPa (abs) and room temperature were used as the test fluids. Four flow regimes were identified visually: bubbly, plug, churn, and annular over the ranges of gas and liquid superficial velocities of 0.04 [ less than or equal to] JG [ less than or equal to] 10 m/s and 0.02 [ less than or equal to] JL [ less than or equal to] 0.7 m/s, respectively, and a flow regime map was developed. Accuracy of the pressure-measurement technique was validated with single-phase, laminar and turbulent, fully developed data. Two-phase experiments were conducted for eight different inlet conditions and various mass splits at the junction. Comparisons were conducted between the present data and former correlations for the fully developed two-phase pressure drop in rectangular channels with similar sizes. Wide deviations were found among these correlations, and the correlations that agreed best with the present data were identified.

Słowa kluczowe

EN

flow regimes; mini channel; pressure drop; two-phase

PL

minikanał; przepływ dwufazowy; spadek ciśnienia

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2012
• Tom: Vol. 33, no. 2
• Strony: 47--6
• Opis fizyczny: Rys., tab.,Bibliogr. 34 poz.,

Twórcy

autor

Elazhary A.

autor

Soliman H.

• Department of Mechanical and Manufacturing Engineering, University of Manitoba, Winnipeg, Manitoba, Canada R3T 5V6,

Bibliografia

• [1] LI W., WU Z.: A general correlation for adiabatic two-phase pressure drop in micro/mini-channels. Int. J. Heat Mass Transfer 53(2010), 2732–2739.
• [2] SUN L., MISHIMA K.: Evaluation analysis of prediction methods for two-phase pressure drop in mini-channels. Int. J. Multiphase Flow 34(2009), 47–54.
• [3] IDE H., KARIYASAKI A., FUKANO T.: Fundamental data on the gas-liquid twophase flow in minichannels. Int. J. Therm. Sci. 46(2007), 519–530.
• [4] LEE J., MUDAWAR I.: Two-phase flow in high-heat-flux micro-channel heat sink for refrigeration cooling applications: Part I-Pressure drop characteristics. Int. J. Heat Mass transfer 48(2005), 928–940.
• [5] KAWAHARA A., CHUNG P., KAWAJI M.: Investigation of two-phase flow pattern, void fraction and pressure drop in microchannels. Int. J. Multiphase Flow 28(2002), 1411–1435.
• [6] LEE H., LEE S.: Pressure drop correlations for two-phase flow within horizontal rectangular channels with small heights. Int. J. Multiphase Flow 27(2001), 783–796.
• [7] MISHIMA K., HIBIKI T., NISHIHARA H.: Some characteristics of gas-liquid flow in narrow rectangular ducts. Int. J. Multiphase Flow 19(1993), 115–124.
• [8] IDE H., MATSUMURA H.: Frictional pressure drops of two-phase gas-liquid flow in rectangular channels. Exp. Therm. Fluid Sci. 3(1990), 362–372.
• [9] TRONIEWSKI L., ULBRICH R.: Two-phase gas-liquid flow in rectangular channels. Chem. Eng. Sci. 39(1984), 751–765.
• [10] KLINE S., MCCLINTOCK F.: Describing uncertainties in single-sample experiments. Mech. Eng. J. 75(1953), 3–8.
• [11] SHAH R., LONDON A.: Laminar Flow Forced Convection in Ducts. Academic Press, New York 1978.
• [12] SADATOMII M., SATO Y., SARUWATARI S.: Two-phase flow in vertical noncircular channels. Int. J. Multiphase Flow 8(1982), 641–655.
• [13] NICHOLSON M., AZIZ K., GREGORY G.: Intermittent two phase flow in horizontal pipes: Predictive models. Can. J. Chem. Eng. 56(1978), 653–663.
• [14] ALI M., SADATOMI M., KAWAJI M.: Adiabatic two-phase flow in narrow channels between two flat plates. Can. J. Chem. Eng. 71(1993), 657–666.
• [15] LOCKHART R., MARTINELLI R.: Proposed correlation of data for isothermal twophase, two-component flow in pipes. Chem. Eng. Prog. 45(1949), 39–48.
• [16] MCADAMS, W., WOODS W., HEROMAN L.: Vaporization inside horizontal tubes of II-benzene-oil mixtures. ASME Trans. 64(1942), 193–200.
• [17] AKERS W., DEANS H., CROSSER O.: Condensation heat transfer within horizontal tubes. Chem. Eng. Prog. Symp. Series 55(1959), 171–176.
• [18] CICCHITTI A., LOBARADI C., SILVERSTI M., SOLDAINI G., ZAVATTARILLI R.: Two-phase cooling experiments – Pressure drop heat transfer burnout measurements. Energia Nucleare 7(1960), 407–425.
• [19] DUKLER A., MOYE W., CLEVELAND R.: Frictional pressure drop in two-phase flow Part A: A comparison of existing correlations for pressure loss and holdup, and Part B: An approach through similarity analysis. AIChE J. 10(1964), 38–51.
• [20] BEATTIE D., WHALLEY P.: Simple two-phase frictional pressure drop calculation method. Int. J. Multiphase flow 8(1982), 83–87.
• [21] LIN S., KWOK C., LI R., CHEN Z., CHEN Z.: Local frictional pressure drop during vaporization for R-12 through capillary tubes. Int. J. Multiphase Flow 17(1991), 95–102.
• [22] AWAD M., MUZYCHKA Y.: Effective property models for homogeneous two-phase flows. Exp. Therm. Fluid Sci. 33(2008), 106–113.
• [23] CHISHOLM D.: A theoretical basis for the Lockhart-Martinelli correlation for twophase flow. Int. J. Heat Mass Transfer 10(1967), 1767–1778.
• [24] WAMBSGANSS M., JENDRZEJCZYK J., FRANCE D., OBOT N.: Frictional pressure gradients in two-hhase flow in a small horizontal rectangular channel. Exp. Therm. Fluid Sci. 5(1992), 40–56.
• [25] MISHIMA K., HIBIKI T.: Some characteristics of air-water two-phase flow in small diameter vertical tubes. Int. J. Multiphase Flow 22(1996), 703–712.
• [26] QU W., MUDAWAR I.: Measurements and predictions of pressure drop in two-phase micro-channel heat sinks. Int. J. Heat Mass Transfer 46(2003), 2737–2753.
• [27] HWANG Y., KIM M.: The pressure drop in microtubes and the correlation development. Int. J. Heat Mass Transfer 49(2006), 1804–1812.
• [28] ZHANG W.: Study on constitutive equations for flow boiling in mini-channels. PhD thesis, Kyoto University, 2006.
• [29] ZHANG W., HIBIKI T., MISHIMA K.: Correlation for flow boiling heat transfer at low liquid Reynolds number in small diameter channels. J. Heat Transfer 127(2005), 1214–1221.
• [30] ZHANG W., HIBIKI T., MISHIMA K.: Correlations of two-phase frictional pressure drop and void fraction in mini-channels. Int. J. Heat Mass Transfer 53(2010), 453–465.
• [31] TRAN T., CHYU M., WAMBSGANSS M., FRANCE D.: Two-phase pressure drop of refrigerants during flow boiling in small channels: An experimental investigation and correlation development. Int. J. Multiphase Flow 26(200), 1739–1754.
• [32] FRIEDEL L.: Improved friction pressure drop correlation for horizontal and vertical two-phase pipe flow. In: Proc. European Two-Phase Flow Group Meeting, Paper 2, 1979.
• [33] MULLER-STEINHAGEN H., HECK K.: A simple friction pressure drop correlation for two-phase flow in pipes. Chem. Eng. Process. 20(1986), 297–308.
• [34] SUGAWARA S., KATSUTA K., ISHIHARA I., MUTO T.: Consideration on the pressure loss of two-phase flow in small-diameter tubes. In: Proc. 4th National Heat Transfer Symp. of Japan, 169–172, 1967.