Flow characteristics within the wall boundary layers of swirling steam flow in a pipe comprising horizontal and inclined sections

Afrasyab Khan; Mohd Sobri Takriff; Masli Irwan Rosli; Nur Tantiyani Ali Othman; Khairuddin Sanaullah; Andrew Ragai Henry Rigit; Ajmal Shah; Atta Ullah

Korean Journal of Chemical Engineering, Vol.37, No.1, 19-36, January, 2020

DOI10.1007/s11814-019-0404-x Export Citation

Flow characteristics within the wall boundary layers of swirling steam flow in a pipe comprising horizontal and inclined sections

Afrasyab Khan^†, Mohd Sobri Takriff, Masli Irwan Rosli, Nur Tantiyani Ali Othman, Khairuddin Sanaullah¹, Andrew Ragai Henry Rigit¹, Ajmal Shah², and Atta Ullah³

Faculty of Engineering & Built Environment, Department of Chemical & Process Engineering, National University of Malaysia (UKM), Bangi 43600, Selangor, Malaysia
¹Faculty of Engineering, Department of Mechanical Engineering, University Malaysia Sarawak (UNIMAS), Kota Samarahan 94300, Sarawak, Malaysia
²Center of Mathematical Sciences (CMS), Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilor, Islamabad, Pakistan
³Department of Chemical Engineering, Pakistan Institute of Engineering & Applied Sciences (PIEAS), Nilor, Islamabad, Pakistan

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Handling and utilization of steam flow efficiently to obtain various tangible industrial outcomes relies mainly upon how to optimize various flow parameters like boundary layer thickness, skewness, shear stress, and turbulent dissipation for minimum losses such as pressure and heat. Swirling steam flow, driven by a propeller through a circular duct along horizontal and inclined surfaces presents an interesting flow regime that includes the boundary layer flows close to the wall of the pipe and weak and uniform flow that prevails across the inner region of the pipe. Such flow was investigated here with a specially designed experimental facility. Convective Instabilities were observed that propagate along the axial direction in a nonlinear fashion. It was observed that the operating conditions could be optimized for measuring the shear stresses based on the intersection of the profiles under the effect of variations in the inlet pressure of steam and the rotational speed of the propeller. We found that the flow transformed from positive to negative skewness when the rotational speed of the propeller was raised from 4-14 thousand per minute at 10 bars of constant inlet steam pressure. More area came under the effect of reduced skin friction when the rotational speed of the propeller was raised. More turbulent energy was found to be dissipated when the rotational speed of the propeller was raised. It was found that yet the dissipation of the turbulent energy takes place under the joint effect of inlet pressure of steam and the rotational speed of the propeller, but the exact effect of any one of these two operating parameters still needs to be determined and requires further investigation.

Keywords:Steam;Swirl;Instabilities;Intensity;Skewness;Boundary

[References]

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[4] Kato F, Onoda T, Takano T, Japanese Patent, JPH (1998).

[5] Meroney RN, Measurements of Turbulent Boundary Layer Growth over a Longitudinally Curved Surface (1974).

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[7] Tandiono T, Winoto SH, Shah DA, Phys. Fluids, 21, 084106 (2009)

[8] Tandiono T, Winoto SH, Shah DA, J. Vis., 12, 195 (2009)

[9] Mitsudharmadi H, Winoto SH, Shah DA, Phys. Fluids, 17, 124102 (2005)

[10] Tandiono T, Winoto SH, Shah DA, Phys. Fluids, 25, 104104 (2013)

[11] Mukund R, Viswanath PR, Narasimha R, Prabhu A, Crouch JD, J. Fluid Mech., 566, 97 (2006)

[12] Tichenor NR, Humble RA, Bowersox RDW, J. Fluid Mech., 722, 187 (2013)

[13] Swearingen JD, Blackwelder RF, J. Fluid Mech., 182, 255 (1987)

[14] Bradshaw P, Effects of streamline curvature on turbulent flow, No. AGARD-AG-169. Advisory Group for Aerospace Research and Development Paris (France) (1973).

[15] Bradshaw P, J. Fluid Mech., 63, 449 (1974)

[16] Yang L, Zare-Behtash H, Erdem E, Kontis K, Exp. Therm. Fluid Sci., 40, 50 (2012)

[17] Jayaram M, Taylor MW, Smits AJ, J. Fluid Mech., 175, 343 (1987)

[18] Flaherty W, Austin JM, Phys. Fluids, 25, 106106 (2013)

[19] Donovan JF, Spina EF, Smits AJ, J. Fluid Mech., 259, 1 (1994)

[20] Smith DR, Smits AJ, Exp. Fluids, 18, 363 (1995)

[21] Franko KJ. Lele S, Phys. Fluids, 26, 024106 (2014)

[22] Lee JH, Sung HJ, Int. J. Heat Fluid Flow, 29, 568 (2008)

[23] Harun Z, Monty JP, Mathis R, Marusic I, J. Fluid Mech., 715, 477 (2013)

[24] Shu S, Yang N, Chinese J. Chem. Eng., 26, 31 (2018)

[25] Shu SL, Yang N, Chem. Eng. Sci., 181, 132 (2018)

[26] Pradhan A, Yadav S, Procedia Eng., 127, 177 (2015)

[27] Sajjadi H, Salmanzadeh M, Ahmadi G, Jafari S, Comput. Fluids, 150, 66 (2017)

[28] Sajjadi H, Salmanzadeh M, Ahmadi G, Jafari S, Particuology, 30, 62 (2017)

[29] Fakhari A, Lee T, Comput. Fluids, 107, 205 (2015)

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[31] CORPORATION MS, Pressure Sensor: PCB Model 113B27, PCB Piezotronics (2019).

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[35] Dzunic J, Petkovic MS, Petkovic LD, Appl. Math. Comput., 217, 7612 (2011)

[36] Petkovic MS, Neta B, Petkovic LD, Dzunic J, Appl. Math. Comput., 226, 635 (2014)

[37] Sharma JR, Arora H, Appl. Math. Comput., 273, 924 (2016)

[38] Swanee PK, Jain AK, J. Hydraul. Div., 102(5), 657 (1976)

[39] Lester TG, ASHRAE J., 44, 41 (2002)

[40] Zhang X, Sun X, Xin X, Adv. Water Resour. Hydraul. Eng., Springer Berlin Heidelberg, Berlin, Heidelberg, 2163 (2009).

[41] Baker DW, Proceeding Symp. Flow-Its Meas. Control Sci. Ind., 301 (1974).

[42] Senoo Y, Nagata T, Bull. JSME, 15, 1514 (1972)

[43] Benson T, Dynamic Pressure of a Moving Fluid Element, pp. 1, NASA (2014).

[44] Gibson CH, Stegen GR, Williams RB, J. Fluid Mech., 41, 153 (1970)

[45] Wyngaard JC, J. Fluid Mech., 48, 763 (1971)

[46] Antonia RA, Van Atta CW, J. Fluid Mech., 67, 273 (1975)

[47] Mestayer PG, Gibson CH, Coantic MF, Patel AS, Phys. Fluids, 19, 1276 (1976)

[48] Sreenivasan KR, Antonia RA, Phys. Fluids, 20, 1986 (1977)

[49] So RMC, Mellor GL, An experimental investigation of turbulent boundary layers along curved surfaces, NASA (1972).

[50] Ramaprian BR, Shivaprasad BG, J. Fluid Mech., 85, 273 (1978)

[51] Smits AJ, Eaton JA, Bradshaw P, J. Fluid Mech., 94, 243 (1979)

[52] Winoto SH, Mitsudharmadi H, Shah DA, J. Vis., 8, 315 (2005)

[53] Meroney RN, Bradshaw P, AIAA J., 13, 1448 (1975)

[54] Zarbi G, Reynolds AJ, Fluid Dyn. Res., 7, 151 (1991)

[55] Kolmogorov A, The Local Structure of Turbulence in Incompressible Viscous Fluid for Very Large Reynolds Numbers, Izd-vo Akademii nauk SSSR (1941).

[56] Kida S, Orszag SA, J. Sci. Comput., 5, 85 (1990)