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critical heat flux in flow in, forced convective heat transfer in single phase flow: free convective heat transfer in closed-end: horizontal, heat transfer to liquid metals in, single phase flow and pressure drop in, with rotating inner surface
Introduction and Fundamentals Heat Transfer in Annular Ducts with One Rotating Surface flow pattern in, pressure drop in, generalised correlation for friction factor in, heat transfer in, generalised correlation for heat transfer coefficient,
Annular (radial) fins, efficiency Annular flow (gas-liquid): Annular flow (liquid-liquid), Annular flow (liquid-liquid-gas), Anti-foulants, Antoine equation, for vapour pressure, Aqueous solutions, as heat transfer media, Arc welding of tubes into tube sheets: Archimedes number, Area of tube outside surface in shell-and-tube heat exchangers: Argon: Arithmetic mean temperature difference, definition, Armstrong, Robert C Aromatics: ASME VIII code, for mechanical design of shell-and-tube heat exchangers: Assisted convection: Attachment, of fouling layers, Augmentation of heat transfer Austenitic stainless steels, Average phase velocity in multiphase flows, Axial flow reboilers, Axial wire attachments, for augmentation of condensation, Azeotropes, condensation of

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Absorbing media, interaction phenomena in, Absorption of thermal radiation: Absorption coefficient, Absorption spectra in gases, Absorptivity: Acentric factor: Acetaldehyde: Acetic acid: Acetic anhydride: Acetone: Acetonitrile: Acetophenone: Acetylene: Acetylenes Ackerman correction factor in condensation, Acoustic methods, for fouling mitigation, Acoustic vibration of heat exchangers, Acrolein: Acrylic acid: Active systems for augmentation of heat transfer: Additives: Adiabatic flows, compressible, in duct, Admiralty brass, Advanced models for furnaces, Agitated beds, heat transfer to, Agitated vessels, Ahmad scaling method for critical heat flux in flow boiling of nonaqueous fluids, Air: Air-activated gravity conveyor, Air-cooled heat exchangers: Air preheaters, fouling in, Albedo for single scatter in radiation, Alcohols: Aldehydes: Aldred, D L, Allyl alcohol: Allyl chloride (-chloropropane) Alternating direction (ADR) method, for solution of implicit finite difference equations, Aluminum, spectral characteristics of anodized surfaces, Aluminum alloys, thermal and mechanical properties, Aluminium brass, Ambrose-Walton corresponding states method, for vapour pressure, Amides: Amines: Ammonia: tert-Amyl alcohol: Analogy between heat and mass and momentum transfer Analytical solution of groups, for calculation of thermodynamic Anelasticity, Angled tubes, use in increasing flooding rate in reflux condensation, Aniline: Anisotropy of elastic properties, Annular distributor in shell-and-tube heat exchangers, Annular ducts:
critical heat flux in flow in, forced convective heat transfer in single phase flow: free convective heat transfer in closed-end: horizontal, heat transfer to liquid metals in, single phase flow and pressure drop in, with rotating inner surface
Introduction and Fundamentals Heat Transfer in Annular Ducts with One Rotating Surface flow pattern in, pressure drop in, generalised correlation for friction factor in, heat transfer in, generalised correlation for heat transfer coefficient,
Annular (radial) fins, efficiency Annular flow (gas-liquid): Annular flow (liquid-liquid), Annular flow (liquid-liquid-gas), Anti-foulants, Antoine equation, for vapour pressure, Aqueous solutions, as heat transfer media, Arc welding of tubes into tube sheets: Archimedes number, Area of tube outside surface in shell-and-tube heat exchangers: Argon: Arithmetic mean temperature difference, definition, Armstrong, Robert C Aromatics: ASME VIII code, for mechanical design of shell-and-tube heat exchangers: Assisted convection: Attachment, of fouling layers, Augmentation of heat transfer Austenitic stainless steels, Average phase velocity in multiphase flows, Axial flow reboilers, Axial wire attachments, for augmentation of condensation, Azeotropes, condensation of
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A Annular ducts: with rotating inner surface
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Heat Transfer in Annular Ducts with One Rotating Surface

DOI 10.1615/hedhme.a.000183

2.5.16 Heat transfer in annular ducts with one rotating surface

C. Y. Nakashima, S. Oliveira Jr., E. F. Caetano

A. Introduction

Section 151A gives a brief introduction to single phase fluid flow inside annular ducts with rotation of inner surface. In that section, the basic flow patterns that cause the pressure drop to rise are described. The same flow patterns are responsible for a heat transfer enhancement. The behavior of the heat transfer in annular ducts with rotation of inner surface should, therefore, be analyzed bearing in mind the fluid flow behavior.

B. Heat transfer coefficient

Several authors studied the heat transfer between inner and/or outer cylinders and the fluid flowing inside rotating annular channels. Even though the heat transfer is a complex function of several parameters (fluid characteristics, operational conditions, heating or cooling among others), it is possible to summarize the data in a general pattern in terms of Nusselt number, Taylor number and Reynolds number. This is exemplified by the experimental data of Becker and Kaye (1962) for the case of heat transfer from the outer cylinder as shown in Figure 1.

Figure 1 Nusselt number behavior in annular channels with rotation of the inner cylinder: a) transition laminar/laminar with vortices and b) transition turbulent/turbulent with vortices [after Becker and Kaye (1962)]

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