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Combusti.n characteri.ti.s of low-quali.y li.ni.e for di.ferent bed materi.l spheri.i.i.s i. a ci.culati.g flui.i.ed bed boi.er:A numeri.al study

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Parti.uology 2024年第7期90卷 364-382页

作者： Barış Gürel Gülşah Karaca Dolgun Osman i.ek Ali.Keçebaş Department of Mechani.al Engi.eeri.g Engineering FacultySüleyman Demirel UniversityÇünürIspartaTurkey Department of Energy Systems Engi.eeri.g Technology FacultyMuğla SıtkıKoçman UniversityKötekliMenteşeMuğlaTurkey

Thi. study delves i.to the combusti.n behavi.r of vari.us li.ni.e types wi.hi. a ci.culati.g flui.i.ed bed boi.er(CFBB),wi.h a pri.ary focus on the i.pact of di.ferent bed materi.l spheri.i.y rati.s(0.5,0.7,and 0.9).Uti.i.i.g bed materi.l wi.h a spheri.i.y rati. of 0.9 sourced from theÇan power plant and veri.i.d through experi.entati.n,the research reveals several key ***,furnace temperatures tended to ri.e wi.h hi.her spheri.i.y rati.s,albei. wi.h vari.ti.ns between li.ni.e types,parti.ularly hi.hli.hti.g the complexi.y of thi. relati.nshi. i. the case of GLi.Tunçbi.ek *** levels i. the combusti.n chamber remai.ed consi.tent across di.ferent spheri.i.y rati.s,i.di.ati.g mi.i.al i.fluence on pressure *** combusti.n effi.i.ncy,especi.lly at the bottom of the boi.er,was observed at lower spheri.i.y levels(0.5 and 0.7)forÇan li.ni.e,as reflected i. CO_(2) mole *** NO_(x) emi.si.ns generally decreased wi.h lower spheri.i.y,the sensi.i.i.y to spheri.i.y vari.d by li.ni.e type,wi.h i.gın li.ni.e showcasi.g low NO_(x) but hi.h SO_(2) emi.si.ns,underscori.g the i.tri.ate i.terplay between li.ni.e properti.s,spheri.i.y,and ***,thi. study advances our understandi.g of CFBB combusti.n dynami.s,offeri.g i.si.hts valuable for opti.i.i.g performance and emi.si.ns control,parti.ularly i. li.ni.e-based power.

关键词： Ci.culati.g flui.i.ed bed boi.er Computati.nal parti.le flui. dynami.s method Parti.le spheri.i.y rati.s NO_(x)and SO_(2)emi.si.ns Energy producti.n effi.i.ncy

Gas-Soli. Flow,Combusti.n Characteri.ti.s,and Gas Emi.si.ns i. a 75 t/h CFB Boi.er Based on the CPFD Method

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Journal of Thermal Sci.nce 2025年第1期 323-336页

作者： HUANG Xi.nkun BAi.Zhang ZHU Xi.oli.WANG Shuoshuo mu Li. GONG Li.ng College of New Energy China University of Petroleum (East China) Key Laboratory of Ocean Energy Uti.i.ati.n and Energy Conservati.n of Mi.i.try of Educati.n School of Energy and Power EngineeringDalian University of Technology

A 3D si.ulati.n usi.g Computati.nal Parti.le Flui. Dynami.s（CPFD） methods was used to calculate coal combusti.n i. a 75 t/h i.dustri.l-scale ci.culati.g flui.i.ed bed（CFB） *** characteri.ti.s,gas-soli. flow characteri.ti.s,and gaseous pollutant emi.si.ns of CFB boi.ers from combusti.n i.ni.i.n to stable operati.n were systemati.ally evaluated i. thi. *** show that the temperature di.tri.uti.n i. relati.ely uni.orm throughout the *** the combusti.n process unfolds wi.hi. the boi.er,the gas composi.i.n curve stri.i.gly portrays the i.verse correlati.n between CO2and *** the combusti.n reacti.n progresses,i. becomes evi.ent that the concentrati.n of CO2progressi.ely i.creases,whi.e the concentrati.n of O2concurrently *** i.verse relati.nshi. underscores the fundamental combusti.n reacti.n,where carbon-based fuels react wi.h oxygen to produce carbon di.xi.e and release ***,a comprehensi.e analysi. has revealed that,from i.ni.i.n to stable combusti.n,both ni.ri. oxi.e（NO） and sulfur di.xi.e（SO2） emi.si.ns exhi.i. a decli.i.g *** reducti.n i. pollutant generati.n i. attri.uted to the i.provement i. combusti.n *** complete combusti.n leads to lower levels of unburned hydrocarbons,whi.h are prone to NO ***,the sulfur content i. the fuel i. more effi.i.ntly oxi.i.ed to sulfur tri.xi.e（SO3） or bound i. sulfates,reduci.g *** steady state i. the si.ulati.n,the SO2mass flow rate vari.s si.ni.i.antly wi.h the furnace hei.ht,gradually i.creasi.g from 0.07 kg·s-1at 4 m at the bottom of the furnace to a peak of 0.078 kg·s-1at 8 m i. the center,and then decreasi.g to 0.06 kg·s-1at 20m at the top of the furnace.

关键词：

A muLTi.PARAMETER SPLi.Ti.G EXTRAPOLATi.N AND A PARALLEL ALGORi.HM FOR ELLi.Ti. Ei.ENVALUE PROBLEM

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Journal of Computati.nal Mathemati.s 1998年第3期16卷 213-220页

作者： Li.o, XH Zhou, ah Acad Si.i.a Inst Syst Sci Beijing 100080 Peoples R China

The fi.i.e element soluti.ns of elli.ti. ei.envalue equati.ns are shown to have a multi.parameter asymptoti. error expansi.n. Based on thi. expansi.n and a spli.ti.g extrapolati.n techni.ue, a parallel algori.hm for s... 详细信息

关键词： fi.i.e element multi.parameter error expansi.n parallel algori.hm spli.ti.g extrapolati.n

Duodenum-preservi.g local exci.i.n of a gastroi.testi.al stromal tumor

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Hepatobi.i.ry & Pancreati. Di.eases i.ternati.nal 2008年第2期7卷 214-216页

作者： Chandi.a ah Li.anage Sanjaya Abeygunawardhana Sumudu Kumarage Kemal i.Deen Department of Surgery University of Kelaniya Medical School Ragama Sri Lanka

BACKGROUND:Duodenal gastroi.testi.al stromal tumors (Gi.Ts) are rare. Because of the complex anatomy of the duodenum, the methods of resecti.n of these tumors are controversi.l and di.erse. METHODS:We report a case of a duodenal Gi.T i. the anterolateral wall of the second part of the duodenum, whi.h was successfully managed by local exci.i.n. The surgery was faci.i.ated by preoperati.e mappi.g wi.h i.di.n i.k and navi.ati.n by endoscopy to assess the adequacy of resecti.n and to avoi. i.jury to the ampulla. RESULT:Reconstructi.n was successful wi.h a duodeno-jejunostomy and protected by a nasoduodenal drai.. CONCLUSi.N:The pati.nt had no postoperati.e compli.ati.ns and the tumor was confi.med to be a Gi.T of the duodenum successful wi.h an adequate resecti.n margi..

关键词： gastroi.testi.al stromal tumor local exci.i.n, duodenum

i.enti.yi.g the sensi.i.e areas i. targeted observati.n for predi.ti.g the Kuroshi. large meander path i. a regi.nal ocean model

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Acta Oceanologi.a Si.i.a 2022年第2期41卷 3-14页

作者： Xi. Li. Qi.ng Wang mu mu School of Mathemati.s Zhengzhou University of AeronauticsZhengzhou 450046China Key Laboratory of Mari.e Hazards Forecasti.g of Mi.i.try of Natural Resources Hohai UniversityNanjing 210098China College of Oceanography Hohai UniversityNanjing 210098China i.sti.ute of Atmospheri. Sci.nces Fudan UniversityShanghai 200438China

Wi.h the Regi.nal Ocean Modeli.g System(ROMS),thi. paper i.vesti.ates the sensi.i.e areas i. targeted observati.n for predi.ti.g the Kuroshi. large meander(LM)path usi.g the condi.i.nal nonli.ear opti.al perturbati.n *** i.enti.y the sensi.i.e areas,the opti.al i.i.i.l errors(Oi.s)featuri.g the largest nonli.ear evoluti.n i. the LM predi.ti.n are fi.st calculated;the resulti.g Oi.s are locali.ed mai.ly i. the upper 2500 m over the LM upstream regi.n,and thei. spati.l structure has certai. si.i.ari.i.s wi.h that of the opti.al tri.geri.g *** on thi. spati.l structure,the sensi.i.e areas are successfully i.enti.i.d,located southeast of Kyushu i. the regi.n(29°–32°N,131°–134°E).A seri.s of sensi.i.i.y experi.ents i.di.ate that both the posi.i.ns and the spati.l structure of i.i.i.l errors have i.portant effects on the LM predi.ti.n,veri.yi.g the vali.i.y of the sensi.i.e ***,the effect of targeted observati.n i. the sensi.i.e areas i. evaluated through observi.g system si.ulati.n *** targeted observati.n i. i.plemented i. the i.enti.i.d sensi.i.e areas,the predi.ti.n errors are effecti.ely reduced,and the predi.ti.n ski.l of the LM event i. i.proved *** provi.es sci.nti.i. gui.ance for ocean observati.ns related to enhanci.g the predi.ti.n ski.l of the LM event.

关键词： Kuroshi. large meander targeted observati.n sensi.i.e areas ROMS

Mi.ed convecti.n heat transfer i. hori.ontal channel fi.led wi.h nanoflui.s

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2013年第3期34卷 339-350页

作者： Tao FAN Hang XU i. POP State Key Laboratory of Ocean Engi.eeri.g School of Naval ArchitectureOcean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China Post-Doctoral Research Stati.n Jiangnan Shipyard Group Co. Ltd. Shanghai 201913 P. R. China Department of Mathemati.s Babes-Bolyai University Cluj-Napoca R-400084 Romania

The lami.ar fully developed nanoflui. flow and heat transfer i. a hori.onal channel are i.vesti.ated. Hi.hly accurate soluti.ns for the temperature and nanopavti.le concentrati.n di.tri.uti.ns are obtai.ed. The effects of the Browni.n moti.n parameter Nb, the thermophoresi. parameter Nt, and the Lewi. number Le on the temperature and nanoparti.le concentrati.n di.tri.uti.ns are di.cussed. The current analysi. shows that the nanoparti.les can i.prove the heat transfer characteri.ti.s si.ni.i.antly for thi. flow problem.

关键词： nanoflui. flow hori.ontal channel mi.ed convecti.n heat transfer,homotopy analysi. method (HAM)

Recent Progress i. Appli.ati.ns of the Condi.i.nal Nonli.ear Opti.al Perturbati.n Approach to Atmosphere-Ocean Sci.nces

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Chi.ese Annals of Mathemati.s,Seri.s B 2022年第6期43卷 1033-1048页

作者： mu mu Kun ZHANG Qi.ng WANG Department of Atmospheri. and Oceani. Sci.nces and i.sti.ute of Atmospheri. Sci.nces Fudan UniversityShanghai 200438China CMA-FDU Joi.t Laboratory of Mari.e Meteorology Shanghai 200438China Shanghai.Fronti.rs Sci.nce Center of Atmosphere-Ocean i.teracti.n Shanghai 200438China CAS Key Laboratory of Ocean Ci.culati.n and Waves Institute of OceanologyChinese Academy of Sciences and Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Key Laboratory of Mari.e Hazards Forecasti.g Ministry of Natural ResourcesHohai UniversityNanjing 210098China College of Oceanography Hohai UniversityNanjing 210098China

The condi.i.nal nonli.ear opti.al perturbati.n(CNOP for short) approach i. a powerful tool for predi.tabi.i.y and targeted observati.n studi.s i. atmosphere-ocean sci.nces. By fully consi.eri.g nonli.eari.y under appropri.te physi.al constrai.ts, the CNOP approach can reveal the opti.al perturbati.ns of i.i.i.l condi.i.ns, boundary condi.i.ns, model parameters, and model tendenci.s that cause the largest si.ulati.n or predi.ti.n uncertai.ti.s. Thi. paper revi.ws the progress of applyi.g the CNOP approach to atmosphere-ocean sci.nces duri.g the past fi.e years. Followi.g an i.troducti.n of the CNOP approach, the algori.hm developments for solvi.g the CNOP are ***, recent CNOP appli.ati.ns, i.cludi.g predi.tabi.i.y studi.s of some hi.h-i.pact ocean-atmospheri. envi.onmental events, ensemble forecast, parameter sensi.i.i.y analysi., uncertai.ty esti.ati.n caused by errors of model tendency or boundary condi.i.n, are revi.wed. Fi.ally, a summary and di.cussi.n on future appli.ati.ns and challenges of the CNOP approach are presented.

关键词： Condi.i.nal nonli.ear opti.al perturbati.n Atmosphere Ocean Targeted observati.n Predi.tabi.i.y

i.VERSE COEFFi.i.NT PROBLEMS FOR PARABOLi. HEMi.ARi.Ti.NAL i.EQUALi.i.S

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Acta Mathemati.a Sci.nti. 2011年第4期31卷 1318-1326页

作者：刘振海 i. Szntó Faculty of Mathemati.s and Computer Sci.nce Guangxi University for Nationalities Departamento de Matemti.a Universidad Tcnica Federico Santa María

Thi. paper i. devoted to the class of i.verse problems for a nonli.ear paraboli. hemi.ari.ti.nal i.equali.y. The unknown coeffi.i.nt of the operator depends on the gradi.nt of the soluti.n and belongs to a set of admi.si.le coeffi.i.nts. i. i. proved that the convergence of soluti.ns for the correspondi.g di.ect problems conti.uously depends on the coeffi.i.nt convergence. Based on thi. result the exi.tence of a quasi.oluti.n of the i.verse problem i. obtai.ed.

关键词： paraboli. hemi.ari.ti.nal i.equali.i.s i.verse coeffi.i.nt problems exi.tence of quasi.oluti.ns

Exact Soluti.ns of Klei.-Gordon Equati.n wi.h Scalar and Vector Rosen-Morse-Type Potenti.ls

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Chi.ese Physi.s Letters 2008年第8期25卷 2754-2757页

作者： A. Soylu O. Bayrak i. Boztosun Department of Physi.s Nigde University 51350 Nigde Turkey Department of Physi.s Bozok University 66200 Yozgat Turkey Department of Physi.s Erciyes University 38039 Kayseri Turkey

We obtai. an exact analyti.al soluti.n of the Klei. Gordon equati.n for the equal vector and scalar Rosen Morse and Eckart potenti.ls as well as the pari.y-ti.e （PT） symmetri. versi.n of the these potenti.ls by usi.g the asymptoti. i.erati.n method. Although these PT symmetri. potenti.ls are non-Hermi.i.n, the correspondi.g ei.envalues are real as a result of the PT symmetry.

关键词： ASYMPTOTi. i.ERATi.N METHOD NON-HERMi.i.N HAMi.TONi.NS PT-SYMMETRi. POTENTi.LS BOUND-STATES Ei.ENVALUE PROBLEMS Di.AC-EQUATi.N SCHRODi.GER-EQUATi.N Si.i.ARi.Y TRANSFORMATi.N REAL PARTi.LES