CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube

doi:10.1016/j.cjche.2016.06.010

›› 2016, Vol. 24 ›› Issue (10): 1313-1324.DOI: 10.1016/j.cjche.2016.06.010

• Fluid Dynamics and Transport Phenomena • Next Articles

CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube

Xu Yang, Jinsong Zeng, Kefu Chen, Yucheng Feng

State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China

Received:2015-04-29 Revised:2016-02-23 Online:2016-11-19 Published:2016-10-28
Supported by:
Supported by the Science & Technology Plan Projects of Guangzhou City (15020079, Study on Quality Intelligent Control of Modern Paper Machine and Energy-saving Technology with Equipment), and Guangdong Provincial Science & Technology Plan Projects (2015B020241001, Research and Application of Biomass Pretreatment and Ethanol Production Technology).

CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube

Xu Yang, Jinsong Zeng, Kefu Chen, Yucheng Feng

State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China

通讯作者: Jinsong Zeng,E-mail address:fezengjs@scut.edu.cn.
基金资助:
Supported by the Science & Technology Plan Projects of Guangzhou City (15020079, Study on Quality Intelligent Control of Modern Paper Machine and Energy-saving Technology with Equipment), and Guangdong Provincial Science & Technology Plan Projects (2015B020241001, Research and Application of Biomass Pretreatment and Ethanol Production Technology).

Abstract

Abstract: For engineering applications ofwater dilution controlling system, the fluid dynamics of a mixed flowwas studied with computational fluid dynamics (CFD) simulations and self-designed experimental set-up. In order to examine the predictability of CFDmodel for the headbox in industrial scale, two pulp suspensions beforemixingwere treated as homogeneous flows separately. Standard k-ε turbulence models with the mass diffusion in turbulent flows-species transport approach were applied in the simulations. A numerical simulation of this headbox model was analyzed with semi-implicit method for pressure linked equations scheme with pressure-velocity coupling. Results show that themodel can predict hydrodynamic characteristics of headbox with injecting dilution water in a central diffusion tube, and the distribution of water content at the outlet of the slice lip is ideally normal at different speeds.

Key words: Computational fluid dynamics, Headbox, Turbulence model, Species transport, Pulp suspension

摘要： For engineering applications ofwater dilution controlling system, the fluid dynamics of a mixed flowwas studied with computational fluid dynamics (CFD) simulations and self-designed experimental set-up. In order to examine the predictability of CFDmodel for the headbox in industrial scale, two pulp suspensions beforemixingwere treated as homogeneous flows separately. Standard k-ε turbulence models with the mass diffusion in turbulent flows-species transport approach were applied in the simulations. A numerical simulation of this headbox model was analyzed with semi-implicit method for pressure linked equations scheme with pressure-velocity coupling. Results show that themodel can predict hydrodynamic characteristics of headbox with injecting dilution water in a central diffusion tube, and the distribution of water content at the outlet of the slice lip is ideally normal at different speeds.

关键词: Computational fluid dynamics, Headbox, Turbulence model, Species transport, Pulp suspension

Xu Yang, Jinsong Zeng, Kefu Chen, Yucheng Feng. CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube[J]. , 2016, 24(10): 1313-1324.

References

[1] K.F. Chen, Pulp suspensions fluid dynamics in wet end of paper machine, first ed. Chinese Light Industry Press, Beijing, 19861-15.
[2] K.F. Chen, Pulp and paper machinery and equipment, second ed. Chinese Light Industry Press, Beijing, 201160-80.
[3] R.A. Reese, Hydraulic headboxes in pulp and paper manufacture, first ed. The joint Textbook Committee of the Paper Industry, TAPPI Press, Atlanta, 1991887-990.
[4] A.D. Trufitt, Design aspects of mani-fold flow spreaders, first ed. Canadian Pulp Paper Association, Montreal, 197580-89.
[5] B.P. Scott, A new headbox design featuring consistency profiling decoupled from fiber orientation response, TAPPI J. 1(78) (1995) 89-95.
[6] M. Ullmar, B. Norman, Observation of fiber orientation in a headbox nozzle at low consistency, TAPPI proceedings, engineering and papermakers conference, Anaheim 1997, pp. 1110-1117.
[7] M. Ullmar, On fiber orientationmechanisms in a headbox nozzle (M.S Thesis) Royal Insititute of Technology, Stockholm, 1998.
[8] C. Ford, F. Ein-Mozaffari, C.P.J. Bennington, Simulation of mixing dynamics in agitated pulp stock chests using CFD, AIChE J. 1(52) (2006) 3562-3569.
[9] T. Wikstrom, Flow and rheology of pulp suspensions at medium consistency (Ph.D. Thesis) Chalmers University of Technology, Goteborg, 2002.
[10] C.P.J. Bennington, Mixing pulp suspensions(Ph.D. Thesis) University of British Columbia, New York, 1988.
[11] P.J. Krochak, J.A. Olson, D.M. Martinez, Fiber suspension flow in a tapered channel:the effect of flow/fiber coupling, Int. J. Multiphase Flow 7(35) (2009) 678-683.
[12] J. Hamalainen,Mathematical modeling and simulation of fluid flows in the headbox of paper machines(Ph.D. Thesis) University of Jyvaskyla, Jyvaskyla, 1993.
[13] C.K. Aidun, A. Kovacs, Hydrodynamics of the forming section:the origin of on uniform fiber orientation, TAPPI J. 78(11) (1995) 22-28.
[14] A. Bakker, J.B. Fasano, A computational study of the flow pattern in an industrial paper pulp stock chest with a side-entering impeller, AIChE 89(293) (1997) 118-124.
[15] Chemical engineering module user's guide, COMSOL AB, first ed. Chemical Industry and Engineering Society of China, Stockholm, Sweden, 200730-38.
[16] A.F. Carla, A.P. Fernando, P.J.F. Garcia, M.G. Rasteiro, Modeling the turbulent flow of pulp suspensions, Ind. Eng. Chem. Res., 4(50) (2011) 9735-9742.
[17] X. Zhang, Fiber orientation in a headbox(M.S Thesis) Mechanical Engineering Department, The University of British Columbia, Columbia, 2001.
[18] J.A. Olson, The motion of fibers in turbulent flow, stochastic simulation of isotropic homogeneous turbulence, Int. J. Multiphase Flow 6(27) (2001) 2083-2103.
[19] A. James, A. Olson, B. Ian Frigaard, A. Candice Chan, P. Jari,Modeling a turbulent fiber suspension flowing in a planar contraction:the one-dimensional headbox, Int. J. Multiphase Flow 2(30) (2004) 51-66.
[20] J.S. Zeng, K.F. Chen, J. Li, CFD simulation of dischargers' dilution-zone in high consistency bleaching tower, Can. J. Chem. Eng. 1(89) (2011) 475-483.
[21] Fluent Inc., Fluent 6 user's guide, Lebanon, USA, 20015-10.
[22] http://www.e-works.net.cn (PERA GLOBAL Company's ANSYS tutorial).

CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube

CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube

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