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A New Take on Porous Medium Approach for Modelling Monoliths and Other Multiple Channel Devices
Technical Paper
2019-24-0049
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The porous medium approach is widely used to represent high-resistance devices, such as catalysts, filters or heat exchangers. Because of its computational efficiency, it is invaluable when flow losses need to be predicted on a system level. One drawback of using the porous medium approach is the loss of detailed information downstream of the device. Correct evaluation of the turbulence downstream affects the calculation of the related properties, e.g. heat and mass transfer.
The novel approach proposed in the current study is based on a modified distribution of the resistance across the porous medium, which allows to account for the single jets developing in the small channels, showing an improved prediction of the turbulence at the exit of the device, while keeping the low computational demand of the porous medium approach.
The benefits and limitations of the current approach are discussed and presented by comparing the results with different numerical approaches and experiments. The flexibility of the proposed approach in terms of describing the device geometry is demonstrated via an optimisation study where the size of the monolith channels is modified to obtain a more uniform distribution of the flow. With the rapid development of additive technologies, the proposed method offers endless possibilities for catalyst and similar device design improvement.
Although here the new approach is applied to a monolith commonly used in automotive exhaust after-treatment systems, it can be generalized to other high resistance devices with multiple flow passages.
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Padula, G., Saul, J., Aleksandrova, S., Medina, H. et al., "A New Take on Porous Medium Approach for Modelling Monoliths and Other Multiple Channel Devices," SAE Technical Paper 2019-24-0049, 2019, https://doi.org/10.4271/2019-24-0049.Data Sets - Support Documents
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References
- Prithiviraj , M. and Andrews , M. J. Three Dimensional Numerical Simulation of Shell-and-Tube Heat Exchangers. Part I: Foundation and Fluid Mechanics Numerical Heat Transfer, Part A Applications 33 8 799 816 1998 10.1080/10407789808913967
- Cornejo , I. , Nikrityuk , P. , and Hayes , R. E. Multiscale RANS-based Modeling of the Turbulence Decay inside of an Automotive Catalytic Converter Chemical Engineering Science 175 377 386 2018 10.1016/j.ces.2017.10.004
- Guardo , A. et al. Influence of the Turbulence Model in CFD Modeling of Wall-to-Fluid Heat Transfer in Packed Beds Chemical Engineering Science 60 6 1733 1742 2005 10.1016/j.ces.2004.10.034
- Su , C. , Brault , J. , Munnannur , A. , Liu , Z. G. et al. Model-Based Approaches in Developing an Advanced Aftertreatment System: An Overview SAE Int. J. Adv. & Curr. Prac. in Mobility 1 1 201 214 2019 10.4271/2019-01-0026
- Benjamin , S. F. et al. Modelling the Flow Distribution through Automotive Catalytic Converters Proceedings of the Institution of Mechanical Engineers, Part C: Journal Of Mechanical Engineering Science 215 4 379 383 2001 10.1243/0954406011520779
- Porter , S. et al. An Assessment of CFD Applied to Steady Flow in a Planar Diffuser Upstream of an Automotive Catalyst Monolith SAE International Journal of Engines 7 4 1697 1704 2014 10.4271/2014-01-2588
- Shah , R. K. A Correlation for Laminar Hydrodynamic Entry Length Solutions for Circular and Noncircular Ducts Journal of Fluids Engineering 100 2 177 179 1978 10.1115/1.3448626
- Abu-Khiran , E. , Douglas , R. , and McCullough , G. Pressure Loss Characteristics in Catalytic Converters SAE Transactions 2123 2134 2003 10.4271/2003-32-0061
- Hayes , R. E. et al. CFD Modelling of the Automotive Catalytic Converter Catalysis today 188 1 94 105 2012 10.1016/j.cattod.2012.03.015
- Cornejo , I. , Nikrityuk , P. , and Hayes , R. E. Turbulence Generation after a Monolith in Automotive Catalytic Converters Chemical Engineering Science 187 107 116 2018 10.1016/j.ces.2018.04.041
- Gao , X. , Zhu , Y.-P. , and Luo , Z.-h. CFD Modeling of Gas Flow in Porous Medium and Catalytic Coupling Reaction from Carbon Monoxide to Diethyl Oxalate in Fixed-Bed Reactors Chemical Engineering Science 66 23 6028 6038 2011 10.1016/j.ces.2011.08.031
- Kuwata , Y. , Suga , K. , and Sakurai , Y. Development and Application of a Multi-Scale k-ε Model for Turbulent Porous Medium Flows International Journal of Heat and Fluid Flow 49 135 150 2014 10.1016/j.ijheatfluidflow.2014.02.007
- Ruiz-Morales , J. C. et al. Three Dimensional Printing of Components and Functional Devices for Energy and Environmental Applications Energy & Environmental Science 10 4 846 859 2017 10.1039/C6EE03526D
- Thakkar , H. et al. 3D-Printed Zeolite Monoliths for CO2 Removal from Enclosed Environments ACS Applied Materials & Interfaces 8.41 27753 27761 2016 10.1021/acsami.6b09647
- Williams , J. L. Monolith Structures, Materials, Properties and Uses Catalysis Today 69 1-4 3 9 2001 10.1016/S0920-5861(01)00348-0
- CD-adapco, S. 2017
- Wang , Y. et al. Performance of Asymmetric Particulate Filter with Soot and Ash Deposits: Analytical Solution and Its Application Industrial & Engineering Chemistry Research 57 46 15846 15856 2018 10.1021/acs.iecr.8b02848
- Benjamin , S. F. , Liu , Z. , and Roberts , C. A. Automotive Catalyst Design for Uniform Conversion Efficiency Applied Mathematical Modelling 28 6 559 572 2004 10.1016/j.apm.2003.10.008
- Agrawal , G. et al. Modeling the Effect of Flow Mal-Distribution on the Performance of a Catalytic Converter Chemical engineering science 71 310 320 2012 10.1016/j.ces.2011.12.04
- Singh , S. K. , Mishra , M. , and Jha , P. K. Nonuniformities in Compact Heat Exchangers-Scope for Better Energy Utilization: A Review Renewable and Sustainable Energy Reviews 40 583 596 2014 10.1016/j.rser.2014.07.207
- Pope , S. B. 2001 10.1088/0957-0233/12/11/705