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- W2028238533 abstract "This paper deals with the extension of the method of fractional steps to hydrodynamic and thermal problems for fully developed steady flow of viscous incompressible fluid in a curved circular tube. This numerical method yields good solutions from low to reasonably high Dean and Prandtl numbers. Typical examples for axial velocity profiles and temperature profiles, streamlines and velocity profiles for secondary flow and isotherms are given. Comparison of the numerically computed velocity and temperature profiles were made with experimental data and some theoretical solutions. On étend la méthode des pas fractionnels aux problèmes hydrodynamiques et thermiques pour l'écoulement permanent et établi d'un fluide visqueux incompressible dans un tube circulaire cintré. Cette méthode numérique fournit une bonne solution pour les nombres de Dean et les nombres de Prandtl faibles et raisonablement élevés. Des exemples sont donnés pour les profils de vitesse axiale et de température, pour les isothermes. Des comparaisons sont faites entre les résultats numériques, les données expérimentales et quelques solutions théoriques. Diese Arbeit befaβt sich mit der Erweiterung des Differenzenverfahrens für hydrodynamische und thermische Probleme bei der voll ausgebildeten stationären Strömung eines viskosen, inkompressiblen Fluids in einem gekrümmten, kreisrunden Rohr. Dieses numerische Verfahren führt bei kleinen und bei mäβig hohen Dean- und Prandtl-Zahlen zu guten Lösungen. Typische Beispiele für axiale Geschwindigkeits- und Temperaturprofile, für Stromlinien und für Geschwindigkeitsprofile der Sekundärströmung, sowie für die Isothermen werden wiedergegeben. Die numerisch errechneten Geschwindigkeits- und Temperaturprofile werden mit Versuchsdaten und mit einigen theoretischen Lösung verglichen. Meтoд дpoбныч шaгoв oбoбщeн нa гидpoдинaмичecкиe и тeнлoвыe зaдaчи пpи пoлнocтью paзвитoм cтaциoнapнoм нeчeнии вязкoй нecзимaeмoй зидкocти в изoгнyтoй кpyглoй тpyбe. Taкoй чиcлeнный мeтoд дaeт чopoшиe peзyльтaты в диaпaзoнe oт мaлыч лo yмepeннo бoльшич знaчeний чиceл Динa и Пpaндтля. Пpивeдeны типичныe pacпpeдeлeния aкcиaльнoи cкopocти и тeмпepaтypы, линии гoкa, a тaкзe пpoфили cкopocти втopичнoгo тeчeния и изoтepмы. Дaнo cpaвнeниe peзyльтaтoв чиcлeнныч pacчeтoв пpoфилeй cкopocти и тeмпepaтypы c экcпepимeнтaльными лaнными и c pядoм дpyгич тeopeтичecкич peшeний." @default.
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- W2028238533 date "1980-06-01" @default.
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- W2028238533 title "Fully developed laminar flow and heat transfer in curved tubes" @default.
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