|
 |
Sob 21:32, 15 Sty 2011 |
 |
Autor |
Wiadomość |
nrzxfquxq
95%

Dołączył: 13 Gru 2010
Posty: 557
Przeczytał: 0 tematów
Ostrzeżeń: 0/5 Skąd: England
|
Temat postu: Two-dimensional Euler equations Accuracy Analysis |
|
|
Two-dimensional Euler equations Accuracy Analysis Algorithm without grid
ijing100080,[link widoczny dla zalogowanych], China; 4. NanjingUniversityofAeronauticsandAstronautics,[link widoczny dla zalogowanych], Nanjing210016, China) Abstract: ThepotentialforusingagridlessmethodbasedonfreeofmeshconceptfortheEulerequationsisinvestigated. TheEulerequationsaresolveddirectlybyusinglocalleast-squarescurves-fitsineachcloudofpoints, andthencomputingthecurves-fitsequationstoapproximatethespatialderivatives. Thispaperfocusesontheaccuracyanalysisofthismethod. Afewkindsofthepointdistributionwithinthecloudofpointsarespecifiedtoanalyzetheaccuracyofthespatialderivativesapproximation. Thispaperpointsoutthatthebalanceofpointsdistributionwithinthecloudofpointsplaysaleadingroleontheaccuracy. Agridlessmethodcanachievesecond-orderaccuracyonthebalancedpointsdistributions,[link widoczny dla zalogowanych], buttheaccuracyisonlyfirst-orderontheunbalancedpointdistributions. Increasingthenumberofpointswithinthecloudofpointorusingthehigh - ordercurves - fitscannotimprovetheaccuracy. Thenumericalexperimentwasconductedtoverifytheaboveconclusion. Weusepointsfilledbythetwo-dimensionalstructuregridgeneratortoformtwokindsofpointcloud,[link widoczny dla zalogowanych], oneialancedtheotherisunbalanced. Theresultindicatesthatthesecond-orderaccuracyisachievedonbalancedpointdistributionsincethepressuredistributioniswel1agreementwiththatofsecond-orderfinite-volumemethod. Butonlythefist-orderaccuracyontheunbalancedpointsdistributionswasachieved,[link widoczny dla zalogowanych], thepressuredistributionalsoshowsquitedifferencebetweensecond-orderfinite-volumemethodandgridlessmethodatdiscontinuousregion. Keywords: gridlessalgorithm; least-squarefits; Eulerequations; accuracyanalysis
Post został pochwalony 0 razy
|
|
|
|
|
|
|
 |
 |
|
 |
|
 |
Możesz pisać nowe tematy Możesz odpowiadać w tematach Nie możesz zmieniać swoich postów Nie możesz usuwać swoich postów Nie możesz głosować w ankietach
|
|
|
|
|
|
|
fora.pl - załóż własne forum dyskusyjne za darmo
Powered by phpBB © 2001, 2002 phpBB Group
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|