Laminar flow and heat transfer of non-newtonian falling liquid film on a horizontal tube with variable surface heat flux

Ouldhadda, D.; Idrissi, A. Il

doi:10.1016/s0735-1933(01)00315-3

Cited by 11 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For their model, the authors considered a laminar flow with a maximum Reynolds number of 460. On their literature review, Ouldhadda and Il Idrissi (2001) highlighted that, according to Mitrovic (1986) and Ganic and Roppo (1980), the fluid is laminar if the Reynolds number is lower than 315; also, Ouldhadda and Il Idrissi (2001) wrote that, according to Parken and Fletcher (1982) and Ueda and Tanaka (1975), the transition from laminar to turbulent flow corresponds to Reynolds between 4000 and 6000. Chyu and Bergles (1987) studied falling film heat transfer on horizontal smooth tubes and developed two models based on four heat transfer regions outside the tubes.…”

Section: Introductionmentioning

confidence: 99%

Modelling of a falling-film evaporator for adsorption chillers

Aprile¹,

Cicco²,

Toppi³

et al. 2023

International Journal of Refrigeration

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Modelling of a falling-film evaporator for adsorption chillers

Aprile¹,

Cicco²,

Toppi³

et al. 2023

International Journal of Refrigeration

View full text Add to dashboard Cite

Heat transfer behavior of melting polymers in laminar flow field

Sato

Oka

Murakami

2004

Polymer Engineering & Sci

View full text Add to dashboard Cite

Heat transfer coefficients were investigated by insertion of a probe into melting polymers under laminar flow at 200–240°C and a flow velocity of 0.5–2.7 mm/sec. The average heat transfer coefficients of melting polypropylene (PP) and polystyrene (PS) were found to be 160–220 W/m·°C and 180–270 W/m·°C, respectively. These coefficients show remarkable dependence on flow velocity, and the average heat transfer coefficient of PS is about 13%–23% higher than that of PP. When the flow velocity of flowing melting PP and PS exceeds about 0.078mm/sec, heat transfer by convection becomes dominant, whereas under lower flow velocities, since the equivalent conduction layer thickness δ′ in which the quiescent state without flow approaches infinity, heat transfer by conduction becomes dominant. The Prandtl number (Pr) and Nusselt number (Nu) of melting PP are 125–133 × 106 and 38.6–51.4, respectively, and those of melting PS are 63–64 × 106 and 42.3–61.3. In the case of constant flow velocity, the Peclet number (Pe) and Stanton number (St) are dependent on the specific heat of melting polymer. Polym. Eng. Sci. 44:423–432, 2004. © 2004 Society of Plastics Engineers.

show abstract

Introduction

Shang¹

2012

Heat and Mass Transfer

View full text Add to dashboard Cite

Laminar flow and heat transfer of non-newtonian falling liquid film on a horizontal tube with variable surface heat flux

Cited by 11 publications

References 15 publications

Modelling of a falling-film evaporator for adsorption chillers

Modelling of a falling-film evaporator for adsorption chillers

Heat transfer behavior of melting polymers in laminar flow field

Introduction

Contact Info

Product

Resources

About