The objective of this paper is to perform a detailed analysis of the process of gas absorption to a thin liquid film adjacent to a spinning disk. This particular process has application in the design of space-based chemical processes where effects of gravity are negligible. The film is formed by the radial spreading of the liquid along the surface of the disk due to centrifugal force. The gaseous medium exposed to the disk is absorbed into the liquid film. The process was modeled by establishing equations for the conservation of mass, momentum, and species concentration and solving them analytically. The chemical reaction between the gas and the liquid was assumed to be of the first order. This contributed a source term as a linear function of concentration in the species conservation equation. Appropriate boundary conditions were used to solve these equations to develop expressions for the local concentration of gas across the thickness of the film and the distributions of film height, bulk concentration, and Sherwood number along the radius of the disk. The partial differential equation for species concentration was solved using the separation of variables technique with the subsequent application of Duhamel's theorem. It was found that at all radial locations, the Sherwood number increases with the Reynolds number and the inverse of the Ekman number. Numerical results are presented for two industrially important reactions, namely, the reaction of oxygen with sodium dithionite and the absorption of carbon dioxide in monoethanolamine solutions.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Absorption in a microgravity environment: analysis of a spinning disk reaktor


    Additional title:

    Absorption in einer Mikroschwerkraft-Umgebung: Analyse eines Schleuderscheibenreaktors


    Contributors:


    Publication date :

    1995


    Size :

    11 Seiten, 12 Bilder, 1 Tabelle, 18 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Shape Characteristis of Spinning Parabolic Structures under Microgravity Environment

    Nakashino, K. / Natori, M. C. | British Library Conference Proceedings | 2000


    REAKTOR

    THIELE ANDREAS / BIERBAUM SVENJA / GRUBE JOERG et al. | European Patent Office | 2020

    Free access

    REAKTOR

    THIELE ANDREAS / BIERBAUM SVENJA / GRUBE JOERG et al. | European Patent Office | 2021

    Free access

    Nálet na reaktor

    Online Contents | 2001


    Spinning disk records holographic movies

    British Library Online Contents | 1999