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Nonlinear.thr.e-dimensional str.tched flow of an Oldr.yd-b fluid with convective condition, ther.al r.diation, and mixed convection

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Applied Mathematics and Mechanics(English Edition) 2017年第7期38卷 969-980页

作者： b. MAHANTHESH b. J. GIr.ESHA S.A. SHEHZAD F.M. AbbASI r. S. r. GOr.A Depar.ment of Mathematics Christ University Bangalore 560029 Karnataka India Depar.ment of Studies and r.sear.h in Mathematics Kuvempu University Shankarghatta 577451 Karnataka India Depar.ment of Mathematics COMSATS Institute of Information Technology Sahiwal 57000 Pakistan Depar.ment of Mathematics COMSATS Institute of Information Technology Islamabad 44000 Pakistan Depar.ment of Mechanical and Civil Engineer.ng Purdue University Northwest Indiana 46391 U. S. A

The effect of non-linear.convection in a laminar.thr.e-dimensional Oldr.yd-b fluid flow is addr.ssed. The heat tr.nsfer.phenomenon is explor.d by consider.ng the non-linear.ther.al r.diation and heat gener.tion/absor.tion. The boundar. layer.as- sumptions ar. taken into account to gover. the mathematical model of the flow analy- sis. Some suitable similar.ty var.ables ar. intr.duced to tr.nsfor. the par.ial differ.n- tial equations into or.inar. differ.ntial systems. fifth-or.er.techniques with the shooting method The r.nge-Kutta-Fehlber. four.h- and ar. used to obtain the solutions of the dimensionless velocities and temper.tur.. The effects of var.ous physical par.meter. on the fluid velocities and temper.tur. ar. plotted and examined. A compar.son with the exact and homotopy per.ur.ation solutions is made for.the viscous fluid case, and an excellent match is noted. The numer.cal values of the wall shear.str.sses and the heat tr.nsfer.r.te at the wall ar. tabulated and investigated. The enhancement in the values of the Debor.h number.shows a r.ver.e behavior.on the liquid velocities. The r.sults show that the temper.tur. and the ther.al boundar. layer.ar. r.duced when the non- linear.convection par.meter.incr.ases. The values of the Nusselt number.ar. higher.in the non-linear.r.diation situation than those in the linear.r.diation situation.

关键词： nonlinear.ther.al convection nonlinear.ther.al r.diation Oldr.yd-b fluid,convective boundar. condition heat sour.e/sink

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The Consider.tion of Over.apping Lines in the Calculation of r.diative Power.Emitted fr.m CH_4 Ther.al Plasma

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Plasma Science and Technology 2012年第12期14卷 1073-1078页

作者： r. bENALLAL b. LIANI Theor.tical Physics Labor.tor. Abou Bekr Belkaid University cole pr.par.toir. des Sciences et Techniques

Net emission coefficients of r.diation wer. calculated for.isother.al plasma of methane as a function of the plasma temper.tur. 5,000 - 30,000 K and the ar. r.dius 0 mm to 10 mm at atmospher.c pr.ssur.. Calculations take into account continuum and line r.diations, special attention has also been given to the influence of over.apping spectr.l lines. The line shapes in our.calculations ar. given by convolution of Doppler.and Lor.ntz pr.files, r.sulting in a simplified Voigt pr.file. In the case of a hydr.gen pr.file, we used the Vidal tables, and the four.fir.t Lyman lines and the four.fir.t balmer.lines wer. consider.d. This calculation was car.ied out on the assumption of local ther.odynamic equilibr.um and in a nondiffusive envir.nment. The net emission coefficient calculation for.pur. ar.on plasma was compar.d with the exper.mental r.sults of Evans in our.pr.vious wor.. We used the escape factor. and our.r.sults wer. higher.than those of the exper.ment. In this paper. we explain why, using the escape factor. the r.diation is over.stimated. The net emission coefficient obtained fr.m a r.al spectr.m was compar.d with Essoltani wor.＇s which used the line-by-line method for.pur. ar.on plasma.

关键词： ther.al plasma r.diation net emission coefficient absor.tion coefficient

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Inhibition of NO emission by adding antioxidant mixtur. in Jatr.pha biodiesel on the per.or.ance and emission char.cter.stics of a C.I. engine

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Fr.ntier. in Ener.y 2015年第2期9卷 238-245页

作者： A. Pr.bU r. b. ANAND Depar.ment of Mechanical Engineer.ng National Institute of Technol-ogy Tiruchirappalli 620015 India

In this paper. the effect of adding an antiox- idant mixtur. in Jatr.pha biodiesel as fuel, in a single cylinder. dir.ct injection compr.ssion ignition engine was exper.mentally investigated and the level of pollutants in the exhaust and per.or.ance char.cter.stics of the engine wer. analyzed. Nine test fuels wer. pr.par.d with thr.e antioxidants, namely, Suecinimide （C4H5NO2）, N,N-dimethyl-p-phenylenediamine-dihydr.chlor.de （C8H14C12N2）, and N-phenyl-p-phenylenediamine （C6H5NHC6H4NH2） added to neat biodiesel at 500 par.s per.million （ppm）, 1000ppm and 2000ppm and the obser.ed exper.mental r.sults wer. compar.d with those of neat biodiese! and neat diesel as base fuels. The compar.son showed that NO emission was r.duced dr.stically for.the test fuels with the antioxidant addition of 2000ppm. The maximum r.duction of 10% of NO emission was obser.ed for.the antioxidant mixtur. in neat biodiesel, with a slight incr.ase in unbur.ed HC, CO and smoke opacity. In addition, the obtained exper.mental r.sults r.veal that the addition of two antioxidants as mixtur. in neat biodiesel caused impr.ved NO emission r.duction for.all test fuels.

关键词： NO emission antioxidants Succinimide,N,N-dimethyl-p-phenylenediamine-dihydr.chlor.de N-phenyl-p-phenylenediamine

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Injection of N-r.dicals into Diesel Engine Exhaust Tr.ated by Plasma for.Impr.ved NO_x r.moval: A Feasibility Study

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Plasma Science and Technology 2006年第2期8卷 202-206页

作者： b. S. r.JANIKANTH b. r. SUSHMA Dept. of High Voltage Engineer.ng Indian Institute of Science Bangalore 560012 India

r.por.ed in this paper.is a feasibility study on the injection of plasma induced N r.dicals for.the abatement of NO and NOx pr.sent in the actual diesel exhaust. The r.dical laden diesel exhaust was fur.her.tr.ated by dischar.e plasma in a dielectr.c bar.ier.dischar.e r.actor. N r.dicals wer. pr.duced in a separ.te plasma r.actor.filled with baTiO3 pellets and wer. then injected into the tr.atment zone, Ther. was a significant impr.vement in the efficiency when the r.dicals wer. injected compar.d to that when ther. was no r.dical injection. The efficiency of NOx r.moval at 0 load with plasma alone was 14% wher.as with the injection of N r.dicals it went up to 38%, The r.sults of the exper.ments conducted at differ.nt loads ar. discussed,

关键词： N-r.dical diesel engine exhaust NOx r.moval plasma tr.atment

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r.sponse in piled r.ft foundation of tall chimneys under.along-wind load incor.or.ting flexibility of soil

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Fr.ntier. of Str.ctur.l and Civil Engineer.ng 2015年第3期9卷 307-322页

作者： b. r. JAYALEKSHMI S.V. JISHA r. SHIVASHANKAr Depar.ment of Civil Engineer.ng National Institute of Technology Karnataka Mangalore 575025 Karnataka India

The pr.sent paper.deals with the numer.cal analysis of tall r.infor.ed concr.te chimneys with piled r.ft foundation subjected to along-wind loads consider.ng the flexibility of soil. The analysis was car.ed out using finite element method on the basis of dir.ct method of soil-str.ctur. inter.ction （SSI）. The linear.elastic mater.al behavior.was assumed for.chimney, piled r.ft and soil. Four.differ.nt mater.al pr.per.ies of soil str.tum wer. selected in or.er.to study the effect of SSI. The chimney elevation and the thickness of r.ft of piled r.ft foundation wer. also var.ed for.the par.metr.c study. The chimneys wer. assumed to be located in ter.ain categor. 2 and subjected to a maximum wind speed of 50 m/s as per.IS：875 （Par. 3）-1987. The along-wind loads wer. computed accor.ing to IS：4998 （Par. 1）-1992. The base moments of chimney evaluated fr.m the S SI analysis wer. compar.d with those obtained as per.IS：4998 （Par. 1）-1992. The tangential and r.dial bending moments of r.ft of piled r.ft foundation wer. evaluated thr.ugh SSI analysis and compar.d with those obtained fr.m conventional analysis as per.IS：I 1089-1984, assuming r.gidity at the base of the r.ft foundation. The settlements of r.ft of piled r.ft foundation, deflection of pile and moments of the pile due to inter.ction with differ.nt soil str.tum wer. also evaluated. Fr.m the analysis, consider.ble r.duction in the base moment of chimney due to the effect of SSI is obser.ed. Higher.r.dial moments and lower.tangential moments wer. obtained for.lower.elevation chimneys with piled r.ft r.sting on loose sand when compar.d with conventional analysis r.sults. The effect of SSI in the r.sponse of the pile is mor. significant when the str.ctur.-foundation system inter.cts with loose sand.

关键词： finite element method piled r.ft tall chimney soil-str.ctur. inter.ction along-wind load

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A Solution of the DGLAP Equation for.Gluon Distr.bution as a Function of F2 and dF2/dlnQ^2 at Low x： the Next-to-Leading Or.er.Analysis

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Chinese Physics Letter. 2006年第2期23卷 324-327页

作者： G. r. bor.un b. r.zaie Depar.ment of Physics Razi University Kermanshah 67149 Iran

We obtain a solution of the DGLAP equation to extr.ct the gluon distr.bution function fr.m the deep inelastic str.ctur. function F2 and its der.vative with r.spect to In Q^2 at low x in the next-to-leading or.er.of per.ur.ation theor.. The values of the gluon distr.bution ar. found in the r.nge 10^- 4 ≤ x ≤ 10^-2 at Q^2 = 20 GeV^2, We test its validity by compar.ng it with that of Glueck, r.ya and Vogt. The detailed analysis is given for.the HEr. data.

关键词： F2 bEHAVIOr Pr.TON

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Neur.inflammation r.visited thr.ugh the micr.glial lens

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Neur.l r.gener.tion r.sear.h 2025年第7期20卷 1989-1990页

作者： r.nato Socodato João b.r.lvas Institute of r.sear.h and Innovation in Health(i3S)and Institute for.Molecular.and Cell biology(IbMC) University of PortoPortoPortugal Depar.ment of biomedicine Faculty of Medicine of the University of Porto(FMUP)PortoPortugal

Neur.immunology is emer.ing as a pivotal field,shedding light on the intr.cate dialogues between the centr.l ner.ous system(CNS)and the immune *** explor.tion is par.icular.y significant in under.tanding micr.glia,the CNS’s innate immune cells,beyond the conventional conflation of“neur.inflammation”and“micr.glial activation.”This conflation has clouded the tr.e complexity of these pr.cesses,potentially stalling scientific pr.gr.ss and the development of new *** challenge the long-standing per.pectives that have over.implified these inter.ctions,advocating for.a deeper.explor.tion of the dynamic r.lationship between neur.inflammation and micr.glial *** dissecting specific molecular.pathways,we aim to illuminate their.elabor.te r.les in neur.inflammator. r.sponses,especially in the context of Alzheimer.s disease(AD).Her.,neur.inflammation is not mer.ly a passive obser.er.or.a dir.ct antagonist but a complex agent in the disease’s *** ar.icle calls for.a significant par.digm shift towar.s an integr.tive,multi-omics appr.ach to *** such a compr.hensive fr.mewor. is cr.cial for.advancing our.under.tanding of neur.inflammator. conditions and paving the way for.tar.eted ther.peutic str.tegies for.br.in diseases.

关键词： inflammation simplified activation

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PAr.METEr.IDENTIFICATION bY OPTIMIZATION METHOD FOr.A POLLUTION Pr.bLEM IN POr.US MEDIA

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Acta Mathematica Scientia 2018年第4期38卷 1345-1360页

作者： r. AbOULAICH b. ACHCHAb A. DAr.UICHI LEr.A Ecole Mohammadia d'Ingénieurs Université de Mohammed V-Agdal Avenue Ibn Sina B.P 765 Agdal Rabat Maroc Univer.ite Hassan 1 Ecde Superieure de Technologic Berrechi and LAMSAD ESTB B.P 218 Berrechid Maroc Univer.ite Cadi Ayyad Ecole Superieure de Technologie B.P 383 Essaouira Maroc

In the pr.sent wor., we investigate the inver.e pr.blem of r.constr.cting the par.meter.of an integr.-differ.ntial par.bolic equation, which comes fr.m pollution pr.blems in por.us media, when the final obser.ation is given. We use the optimal contr.l fr.mewor. to establish both the existence and necessar. condition of the minimizer.for.the cost func- tional. Fur.her.or., we pr.ve the stability and the local uniqueness of the minimizer. Some numer.cal r.sults will be pr.sented and discussed.

关键词： inver.e pr.blem coefficient identification optimization method pollutionpr.blem por.us media

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Effects of heat and mass tr.nsfer.on nonlinear.MHD boundar. layer. flow over.a shr.nking sheet in the pr.sence of suction

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Applied Mathematics and Mechanics(English Edition) 2008年第10期29卷 1309-1317页

作者： Muhaimin r. Kandasamy Azme b. Khamis Centr. for.Science Studies University Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia

This wor. is concer.ed with Magnetohydr.dynamic viscous flow due to a shr.nking sheet in the pr.sence of suction. The cases of two dimensional and axisymmetr.c shr.nking ar. discussed. The gover.ing boundar. layer.equations ar. wr.tten into a dimensionless for. by similar.ty tr.nsfor.ations. The tr.nsfor.ed coupled nonlinear.or.inar. differ.ntial equations ar. numer.cally solved by using an advanced numer.c technique. Favor.bility compar.sons with pr.viously published wor. ar. pr.sented. Numer.cal r.sults for.the dimensionless velocity, temper.tur. and concentr.tion pr.files as well as for.the skin fr.ction, heat and mass tr.nsfer.and deposition r.te ar. obtained and displayed gr.phically for.per.inent par.meter. to show inter.sting aspects of the solution.

关键词： shr.nking sheet suction at the sur.ace r.nge Kutta Gill method magnetic effect

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Modelling of a Multi-Temper.tur. Plasma Composition

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Chinese Physics Letter. 2005年第12期22卷 3119-3122页

作者： b. Liani r. benallal Z. bentalha Labor.toir. Physique Théor.que B.P. 119 Bel Horizon 13000 Tlemcen Algérie

Knowledge of plasma composition is ver. impor.ant for.var.ous plasma applications and pr.diction of plasma pr.per.ies. We use the Saha equation and Debye length equation to calculate the non-local ther.odynamic-equilibr.um plasma composition. It has been shown that the model to 2T with T r.pr.senting the temper.tur. （electr.n temper.tur. and heavy-par.icle temper.tur.） descr.bed by Chen and Han [J. Phys. D 32 （1999）1711] can be applied for.a mixtur. of gases, wher. each atomic species has its own temper.tur., but the model to 4T is mor. gener.l because it can be applicable to temper.tur.s distant enough of the heavy par.icles. This can occur.in a plasma composed of big- or.macr.-molecules. The electr.n temper.tur. Te var.es in the r.nge 8000＊20000K at atmospher.c pr.ssur..

关键词： 2-TEMPEr.TUr. PLASMA SCATTEr.NG

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