{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T05:35:59Z","timestamp":1778391359533,"version":"3.51.4"},"reference-count":28,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2018,9,20]],"date-time":"2018-09-20T00:00:00Z","timestamp":1537401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computation"],"abstract":"<jats:p>Using five samples with different porous materials of Al2TiO5, SiC, and cordierite, we numerically realized the fluid dynamics in a diesel filter (diesel particulate filter, DPF). These inner structures were obtained by X-ray CT scanning to reproduce the flow field in the real product. The porosity as well as pore size was selected systematically. Inside the DPF, the complex flow pattern appears. The maximum filtration velocity is over ten times larger than the velocity at the inlet. When the flow forcibly needs to go through the consecutive small pores along the filter\u2019s porous walls, the resultant pressure drop becomes large. The flow path length ratio to the filter wall thickness is almost the same for all samples, and its value is only 1.2. Then, the filter backpressure closely depends on the flow pattern inside the filter, which is due to the local substrate structure. In the modified filter substrate, by enlarging the pore and reducing the resistance for the net flow, the pressure drop is largely suppressed.<\/jats:p>","DOI":"10.3390\/computation6040052","type":"journal-article","created":{"date-parts":[[2018,9,21]],"date-time":"2018-09-21T03:46:35Z","timestamp":1537501595000},"page":"52","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Numerical Simulation on Flow Dynamics and Pressure Variation in Porous Ceramic Filter"],"prefix":"10.3390","volume":"6","author":[{"given":"Kazuhiro","family":"Yamamoto","sequence":"first","affiliation":[{"name":"Department of Mechanical Systems Engineering, Nagoya University, Chikusa, Furo 1, Nagoya, Aichi-ken 4648603, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yusuke","family":"Toda","sequence":"additional","affiliation":[{"name":"Department of Mechanical Systems Engineering, Nagoya University, Chikusa, Furo 1, Nagoya, Aichi-ken 4648603, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,9,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1016\/j.catcom.2003.09.002","article-title":"Catalytic combustion of soot on metal oxides and their supported metal chlorides","volume":"4","author":"Wang","year":"2003","journal-title":"Catal. Commun."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2757","DOI":"10.1016\/j.proci.2006.08.116","article-title":"The health effects of combustion-generated aerosols","volume":"31","author":"Kennedy","year":"2007","journal-title":"Proc. Combust. Inst."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1258","DOI":"10.4271\/2016-01-0919","article-title":"Vehicular emissions in review","volume":"9","author":"Johnson","year":"2016","journal-title":"SAE Int. J. Engines"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"968","DOI":"10.3155\/1047-3289.60.8.968","article-title":"An analysis of field-aged diesel particulate filter performance: Particle emissions before, during, and after regeneration","volume":"60","author":"Barone","year":"2010","journal-title":"J. Air Waste Manag. Assoc."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1045","DOI":"10.1177\/1468087416637735","article-title":"Experimental testing and mathematical modelling of diesel particle collection in flow-through monoliths","volume":"17","author":"Haralampous","year":"2016","journal-title":"Int. J. Engine Res."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1016\/j.fuel.2016.08.091","article-title":"Particle emissions characterization from a medium-speed marine diesel engine with two fuels at different sampling conditions","volume":"186","author":"Ntziachristos","year":"2016","journal-title":"Fuel"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1595\/003214095X39128","article-title":"Diesel emission control technology","volume":"39","author":"Hawker","year":"1995","journal-title":"Platin Met. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/0926-3373(96)00027-6","article-title":"Deposition, diffusion, and adsorption in the diesel oxidation catalyst","volume":"10","author":"Johnson","year":"1996","journal-title":"Appl. Catal. B Environ."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1007\/s11244-007-0189-8","article-title":"A catalytic diesel particulate filter with a heat recovery function","volume":"42\u201343","author":"Obuchi","year":"2007","journal-title":"Top. Catal."},{"key":"ref_10","first-page":"30","article-title":"Effects of high sulphur content in marine fuels on particulate matter emission characteristics","volume":"12","author":"Sergey","year":"2013","journal-title":"J. Mar. Eng. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.apcatb.2018.07.072","article-title":"Simultaneous removal of NOx and soot particulate from diesel exhaust by in-situ catalytic generation and utilisation of N2O","volume":"239","author":"Davies","year":"2018","journal-title":"Appl. Catal. B Environ."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1016\/0926-3373(96)00024-0","article-title":"Diesel oxidation catalysts for commercial vehicle engines: Strategies on their application for controlling particulate emissions","volume":"10","author":"Stein","year":"1996","journal-title":"Appl. Catal. B Environ."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"3083","DOI":"10.1016\/j.proci.2012.06.117","article-title":"Numerical simulation of continuously regenerating diesel particulate filter","volume":"34","author":"Yamamoto","year":"2013","journal-title":"Proc. Combust. Inst."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"128","DOI":"10.3390\/fib2020128","article-title":"Diesel exhaust after-treatment by silicon carbide fiber filter","volume":"2","author":"Yamamoto","year":"2014","journal-title":"Fibers"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1016\/j.apcatb.2015.04.031","article-title":"Using real particulate matter to evaluate combustion catalysts for direct regeneration of diesel soot filters","volume":"176\u2013177","author":"Ramdas","year":"2015","journal-title":"Appl. Catal. B Environ."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Kong, H., and Yamamoto, K. (2018). Simulation on soot deposition in in-wall and on-wall catalyzed diesel particulate filters. Catal. Today.","DOI":"10.1016\/j.cattod.2018.07.022"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Sappok, A., Santiago, M., Vianna, T., and Wong, V. (2009). Characteristics and effects of ash accumulation on diesel particulate filter performance: Rapidly aged and field aged results. SAE Tech. Pap., 1\u201317.","DOI":"10.4271\/2009-01-1086"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1177\/1687814016637328","article-title":"Diesel particulate filter design simulation: A review","volume":"8","author":"Yang","year":"2016","journal-title":"Adv. Mech. Eng."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1179\/174602206X146281","article-title":"Soot accumulation and combustion in porous media","volume":"79","author":"Yamamoto","year":"2006","journal-title":"J. Energy Inst."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"286","DOI":"10.1504\/PCFD.2012.048254","article-title":"Conjugate simulation of flow and heat transfer in diesel particulate filter","volume":"12","author":"Yamamoto","year":"2012","journal-title":"Prog. Comput. Fluid Dyn."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"769","DOI":"10.4208\/cicp.301011.310112s","article-title":"Boundary conditions for combustion field and LB simulation of diesel particulate filter","volume":"13","author":"Yamamoto","year":"2013","journal-title":"Commun. Comput. Phys."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1016\/j.cattod.2014.07.022","article-title":"Simulation of continuously regenerating trap with catalyzed DPF","volume":"242","author":"Yamamoto","year":"2015","journal-title":"Catal. Today"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"119","DOI":"10.4028\/www.scientific.net\/KEM.735.119","article-title":"Numerical study on filtration of soot particulates in gasoline exhaust gas by SiC fiber filter","volume":"735","author":"Yamamoto","year":"2017","journal-title":"Key Eng. Mater."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"329","DOI":"10.1146\/annurev.fluid.30.1.329","article-title":"Lattice Boltzmann method for fluid flows","volume":"30","author":"Chen","year":"1998","journal-title":"Annu. Rev. Fluid Mech."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Yamamoto, K., and Sakai, T. (2016). Effect of pore structure on soot deposition in diesel particulate filter. Computation, 3.","DOI":"10.3390\/computation4040046"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"479","DOI":"10.1209\/0295-5075\/17\/6\/001","article-title":"Lattice BGK models for Navier-Stokes equation","volume":"17","author":"Qian","year":"1992","journal-title":"Eur. Lett."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1591","DOI":"10.1063\/1.869307","article-title":"On pressure and velocity boundary conditions for the lattice Boltzmann BGK model","volume":"9","author":"Zou","year":"1997","journal-title":"Phys. Fluids"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Yamamoto, K., and Tajima, Y. (2017). Numerical simulation of fluid dynamics in monolithic column. Separations, 4.","DOI":"10.3390\/separations4010003"}],"container-title":["Computation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-3197\/6\/4\/52\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:21:45Z","timestamp":1760196105000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-3197\/6\/4\/52"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,9,20]]},"references-count":28,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2018,12]]}},"alternative-id":["computation6040052"],"URL":"https:\/\/doi.org\/10.3390\/computation6040052","relation":{},"ISSN":["2079-3197"],"issn-type":[{"value":"2079-3197","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,9,20]]}}}