Einfluß von Anströmprofil und Turbulenzintensität auf die Umströmung längsangeströmter Platten endlicher Dicke

Kottke, Volker; Blenke, Heinz; Schmidt, Kristina

doi:10.1007/bf01445794

Cited by 18 publications

(8 citation statements)

References 6 publications

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“…In general, the SS arrangement shows higher mass transfer coefficients compared to TD1, especially along the 1 st half of the plate length. This is, again, associated with the presence of separation bubbles, leading in reduction of heat/ mass transfer in that region, as was also observed by other researchers [12,13,15]. The mass transfer augmentation originating at the reattachment point, analogous to heat transfer augmentation observed by other researchers [21], is also clearly discernible in these figures and in agreement with the reattachment points shown in Tables 5b and 6a.…”

Section: Heat/mass Transfersupporting

confidence: 89%

“…(17), whereas the relative humidity at that location was determined by the sorption isotherm for apple [36], once the interface value of w * was obtained from the solution of Eqs. (7) and (12). Eqs.…”

Section: Methodsmentioning

confidence: 99%

“…At the confining walls (top, bottom) Table 1 Coefficients used in the non-dimensionalized governing equations (6) and (7) and boundary conditions equations (12) and (13). …”

Section: Boundary Conditionsmentioning

confidence: 99%

“…The results showed that mass transfer coefficients do not only depend on the air velocity and distance from the leading edge but the thickness of the slab is also of importance. Kottke et al [12,13] studied mass transfer for turbulent flow over a thick blunt plate in comparison with thin-plate results. They found that for the thick plate the presence of separation bubble influences the mass transport coefficients.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical study of the interaction among a pair of blunt plates subject to convective drying – A conjugate approach

Lamnatou¹,

Papanicolaou²,

Belessiotis³

et al. 2010

International Journal of Thermal Sciences

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Section: Heat/mass Transfersupporting

confidence: 89%

Section: Methodsmentioning

confidence: 99%

“…At the confining walls (top, bottom) Table 1 Coefficients used in the non-dimensionalized governing equations (6) and (7) and boundary conditions equations (12) and (13). …”

Section: Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical study of the interaction among a pair of blunt plates subject to convective drying – A conjugate approach

Lamnatou¹,

Papanicolaou²,

Belessiotis³

et al. 2010

International Journal of Thermal Sciences

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“…[12,13] ausftihrlich untersucht, indem sie mit Hilfe einer speziellen MeBmethode [14] 6rtliche und mittlere Stofffibergangskoeffizienten sowie die Gr6Be von Abl6segebie-ten bestimmten.…”

Section: Introductionunclassified

Einfluß von Rohrreihenzahl und Anströmturbulenz auf die Wärmeleistung von quer angeströmten Rohrbündeln

Stephan

Traub

1987

Wärme- und Stoffübertragung

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Influence of row number and turbulence intensity on the heat transfer rate of tube bundles in cross-flow Abstract. Results of experimental investigations on heat transfer and pressure drop in single rows and in bundles of three, four, and five rows of plain tubes are presented. The tubes were heated by saturated steam, condensing inside, and cooled outside by crossflowing air. The turbulence intensity in the entrance cross section before the bundles was varied between 0.8% and 25% by means of grids. The transversal and the longitudinal pitch to diameter ratio was 1.54 and 3.07; air-side Reynolds numbers ranged from 1.5 9 104 to 1.5 9 105.The enhancement of heat transfer is due to the increase of the turbulence level and also due to a decreasing number of rows. The drag coefficient for the bundle is almost independent of the inlet turbulence intensity. It turned out that the use of turbulence grids leads to higher efficiencies of the tube bundles. Zusammenfassung. Es werden die Ergebnisse einer experimentellen Untersuchung des W~rmefibergangs und Druckabfalls anEinzelreihen sowie an drei-, vier-und ffinfreihigen Glattrohrbfindeln vorgestellt. Die Rohre wurden innen mit kondensierendem Wasserdampf beheizt und auBen yon querstr6mender Luft gekiihlt. Durch Einbau yon verschiedenen Turbulenzgittern konnte die Anstr6mturbulenz vor dem Bfindel zwischen 0,8% und 25% variiert werden. Die Quer-und L~ngsteilung betrug 1,54 und 3,07; die Reynolds-Zahl lag zwischen 1,5 9 104 und 1,5 9 105.Die Verbesserung des mittleren W~irmetibergangs am Rohrbtindel nimmt mit steigendem Turbulenzgrad und mit abnehmender Reihenzahl zu. Die Druckverlustbeiwerte der Rohrbfindel sind nahezu unabh~ingig yon der AnstrSmturbulenz. Es zeigte sich, dab durch Einbau yon Turbulenzgittem die W~rmeleistung der Rohrbfindel erhSht werden kann.

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Stationary Disk in Air Stream

Wiesche

Helcig

2016

Convective Heat Transfer From Rotating Disks Subjected to Streams of Air

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Einfluß von Anströmprofil und Turbulenzintensität auf die Umströmung längsangeströmter Platten endlicher Dicke

Cited by 18 publications

References 6 publications

Numerical study of the interaction among a pair of blunt plates subject to convective drying – A conjugate approach

Numerical study of the interaction among a pair of blunt plates subject to convective drying – A conjugate approach

Einfluß von Rohrreihenzahl und Anströmturbulenz auf die Wärmeleistung von quer angeströmten Rohrbündeln

Stationary Disk in Air Stream

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