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2 edition of Anisotropic turbulent mass transfer in an annulus found in the catalog.

Anisotropic turbulent mass transfer in an annulus

David Paul Robinson

# Anisotropic turbulent mass transfer in an annulus

## by David Paul Robinson

Written in English

Edition Notes

Ph.D. thesis. Typescript.

The Physical Object ID Numbers Series Theses Pagination 235p. Number of Pages 235 Open Library OL21504707M

An anisotropic turbulent mass transfer model, namely the Reynolds mass flux model (RMF), for simulating the chemical absorption process in packed column is introduced by the use of combined. A fully developed turbulent flow of water through a horizontal flow loop (ID = cm) with concentric annular geometry (inner to outer pipe radius ratio = ) was used for comparison purpose.

The feature of the model is that the modeled Reynolds mass flux equation is used to close the turbulent mass transfer equation, therefore the anisotropic turbulent mass diffusion can be.   Mass Transfer Characteristics. ,,, DOI: /B Wenbin Li, Kuotsung Yu, Xigang Yuan, Botan Liu. An anisotropic turbulent mass transfer model for simulation of pilot-scale and industrial-scale packed columns for chemical absorption. International Journal of Heat and Mass Transfer , 88, DOI.

Yosuke Hasegawa, Nobuhide Kasagi, Effects of interfacial velocity boundary condition on turbulent mass transfer at high Schmidt numbers, International Journal of Heat and Fluid Flow, /fluidflow, 28, 6, (), (). 20 January | Heat and Mass Transfer, Vol. 48, No. 7 Radiative slab heating analysis for various fuel gas compositions in an axial-fired reheating furnace International Journal of Heat and Mass Transfer, Vol. 55, No.

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### Anisotropic turbulent mass transfer in an annulus by David Paul Robinson Download PDF EPUB FB2

Conrad Zimmermann, Felix J. Lemcke, Stephan Kabelac, Nusselt numbers from numerical investigations of turbulent flow in highly eccentric horizontal annuli, International Communications in Heat and Mass Transfer, /masstransfer,(), ().Cited by: General formulation of the problem for arbitrarily prescribed wall temperatures or heat fluxes, International Journal of Heat and Mass Transfer, /(63), 6, 6, (), ().

CrossrefCited by: A limited number of measurements were made of the heat transfer coefficient from an electrically heated rod to water flowing in an annulus.

Tests were performed at Reynolds numbers ranging from 5, to 22, (based on equivalent diameter), water temperatures of 70° and °F., and relatively high heat fluxes of 52, toB.t.u./(hr.) (sq. ft.).Cited by: 7. Turbulent flow through concentric annuli is important in various engineering applications and is investigated by many researchers.

and the embedded concentric annulus fibrosus tissues are often modeled as layers with an anisotropic elastic material model. International Journal of Heat and Mass Transfer.

Journal. Experimental Thermal and. The measurement results of mass transfer and resistance in turbulent flow of an aqueous polyoxy solution past a plate are discussed. Methods and apparatuses are considered for the determination of thermal properties of anisotropic media (viscoplastic and rigid ones).

Progress in Heat and Mass Transfer, Volume 5: Heat and Mass Transfer. turbulent ﬂow and heat transfer in eccentric annulus when the turbulent ﬂow occupies the entire duct’s cross-section. Formulation and numerical method We consider non-isothermal ﬂow of an incompressible viscous ﬂuid through an eccentric annular duct (x,yand z are Cartesian coordinates) G = {(x,y,z): (x − x 1)2 +y2 r2 1 ∩ (x.

Deissler, R. G.,“Analysis of Turbulent Heat Transfer, Mass Transfer, and Fluid Friction in Smooth Tubes at High Prandtl and Schmidt Numbers,” NASA Report 9.

Jonsson. Abstract. An eccentric annular duct is a prototype element in a number of engineering applications. Numerous modeling and experimental efforts have been made to investigate the details of the flow field and heat transfer characteristics in such kind of ducts [1, 2, 3].

International Journal of Heat and Mass Transfer Vol Issue 5, MayPages Incipient-boiling superheat for sodium in turbulent, channel flow: Effects of heat flux and flow rate Surchauffe en debut d'ebullition du sodium dans un ecoulement turbulent en canal: Effets du flux thermique et du debit Überhitzung von Natrium bei.

It is shown in Fig. 3 that the transition from laminar to turbulent heat transfer of water flow in the narrow annulus is in the Reynolds number range from towhich is lower than that in conventional circular tubes.

In the turbulent flow area the Nusselt number of water flow in the narrow annulus is larger than that calculated by the Dittus–Boelte formula of conventional circular tubes.

Turbulent flow in the annular gap between two concentric tubes of 38 and 95 mm diameter at Reynolds number of 79’ is experimentally investigated. Measurements are conducted using planar particle image velocimetry (PIV) with spatial resolution of 23 $$\upmu$$ m/pix and interrogation windows of $$\times$$ mm $$^{2}$$.

Furthermore, the total heat and mass transfer increases as Pr increases and/or as the enclosure gap decreases due to an increase in the wall area over which heat and mass transfer occur. Deissler, R. & Taylor, M. Analysis of fully developed turbulent heat transfer and flow in an annulus with various eccentricities.

NACA TN, No. Demuren, A. & Rodi, W. Calculation of turbulence-driven secondary motion in non-circular ducts. Problem 5A Velocity distribution in turbulent pipe flow: Problem 5C Axial turbulent flow in an annulus: Problem 5B Average flow velocity in turbulent tube flow: Problem 5C Instability in a simple mechanical system: Problem 5B Mass flow rate in a turbulent circular jet.

Natural convective heat transfer in a concentric and a highly eccentric, vertical, open ended, annular channel has been investigated numerically. The inner to outer diameter ratio wasand the height to hydraulic diameter ratio was Rothe, T., and Beer, H.,“An Experimental and Numerical Investigation of Turbulent Flow and Heat Transfer in the Entrance Region of an Annulus Between Rotating Tubes,” Proceedings 5th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Vol.

A, pp. – 3. Torii and W.J. Yang. Numerical study on turbulent ﬂow and heat transfer in circular Couette ﬂows. Numer. Heat Trans. Part A-Appl.4. Rothe and H. Pﬁtzer. The inﬂuence of rotation on turbulent ﬂow and heat transfer in an annulus between independently rotating tubes.

Heat Mass Trans. 5. This book presents a new computational methodology called Computational Mass Transfer (CMT). It offers an approach to rigorously simulating the mass, heat and momentum transfer under turbulent flow conditions with the help of two newly published models, namely the C’2—εC’ model and the Reynolds mass flux model, especially with regard to predictions of concentration, temperature and.

Mass Transfer Mean and Turbulent Fields Turbulent Mass Dispersion Concluding Remarks References 2 Heat Transfer in Bidisperse Porous Media Introduction Determination of Transport Properties Two-Phase Flow and Boiling Heat Transfer Dispersion Two-Velocity Model Two-Temperature Model.

This monograph details recent achievements in turbulence theory, experiments and computations relevant to heat and mass transfer. Containing over 90 papers presented at the International Syposium on Turbulence, Heat and Mass Transfer, held in Lisbon, Portugal inthis book covers topics from turbulence structure to computation of complex flows.

Experiments were performed in an open water flow loop. Mass transfer coefficients were obtained from weight loss measurements of benzoic acid life saver elements of various diameters and lengths.

These elements were assembled as an integral part of the inner core of the annulus. Concentricity was maintained by a tensioning device.Turbulent structure at the midsection of an annular flow Phys. Flu (); / Influence of an anisotropic slip-length boundary condition on turbulent channel flow Phys.

Flu (); / Vorticity spectra in high Reynolds number anisotropic turbulence.A computational fluid dynamics (CFD) analysis has been performed to investigate the turbulent flow and heat transfer in a triangular rod bundle with pitch-to-diameter ratios (P/D) of and