| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZsFDuKxG/B5LvM |
| Repository | sid.inpe.br/marciana/2004/02.06.15.15 (restricted access) |
| Last Update | 2009:03.12.17.10.54 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2004/02.06.15.15.43 |
| Metadata Last Update | 2018:06.05.01.20.52 (UTC) administrator |
| Secondary Key | INPE-12369-PRE/7673 |
| ISSN | 0010-2202 1563-521X |
| Citation Key | FachiniSesh:2003:RaAsAn |
| Title | Rate-radio asymptotic analysis of nonpremixed n-heptane flames  |
| Year | 2003 |
| Month | Jan. |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 1489 KiB |
| 2. Context | |
| Author | 1 Fachini, Fernando da Silva 2 Seshadri, K. |
| Group | 1 LCP-INPE-MCT-BR |
| Affiliation | 1 2 Center for Energy Research, Departament of Mechanical and Aerospace Engineering, University of California at san Diego, California, USA |
| Journal | Combustion Science and Technology |
| Volume | 175 |
| Number | 1 |
| Pages | 125-155 |
| History (UTC) | 2005-05-10 16:43:57 :: marciana -> administrator :: 2006-09-28 22:25:35 :: administrator -> marciana :: 2007-03-14 17:02:12 :: marciana -> administrator :: 2008-06-10 22:26:54 :: administrator -> banon :: 2008-11-06 20:14:30 :: banon -> marciana :: 2009-03-12 17:10:54 :: marciana -> administrator :: 2018-06-05 01:20:52 :: administrator -> marciana :: 2003 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | COMBUSTÃO Asymptotic analysis nonpremixed flames heptane flames flame extinction |
| Abstract | A rate-ratio asymptotic analysis of nonpremixed n-heptane (C7H16) flames stabilized in the counterflow configuration is carried out. A reduced chemical-kinetic mechanism made up of three global reactions is employed in the analysis. In the first global step, fuel reacts with radicals to form the intermediate compounds hydrogen (H-2) and carbon monoxide (CO). The second and third global steps describe oxidation of these intermediate compounds to water vapor (H2O) and carbon dioxide (CO2). The number of moles of radicals, alpha, that react with one mole of n-heptane in the first global step depends on the principal path of oxidation of the fuel in the detailed mechanism from which the reduced mechanism is deduced. The value of alpha obtained from different detailed chemical-kinetic mechanisms is not the same. In view of this uncertainty, the present study is focused on obtaining an improved understanding of the influence of alpha on the critical conditions of extinction. The asymptotic flame structure is presumed to comprise outer transport zones and a thin reaction zone. The outer transport zones are inert. Improvements in the present asymptotic analysis over previous asymptotic analyses are that in the transport zones the Lewis number of reactants and products is not presumed to be equal to unity, and heat losses by radiation are included. The Lewis number of any species i is defined as the ratio of thermal diffusivity to the coefficient of diffusion of species i. All chemical reactions are presumed to take place in the reaction zone. The reaction zone is presumed to be made up of an inner layer and an oxidation layer. The structure of the inner layer is obtained by introducing the approximation that only the first global reaction takes place in this layer. The second and third global reactions are presumed to take place in the oxidation layer. Analysis of the outer transport zones and the reaction zone gives the scalar dissipation rate at extinction chi(f,q). For a given value of alpha, radiative extinction is observed when the scalar dissipation rate, chi(f), is decreased below a critical value and diffusive extinction is observed when chi(f) is increased above a critical value. A flame cannot be stabilized for values of alpha larger than a critical value. The existence of flammable boundaries is a key finding of the present study. |
| Area | COMB |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABCP > Rate-radio asymptotic analysis... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | rate.pdf |
| User Group | administrator banon marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ET38CH |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |