This paper documents a numerical study on entropy generation in zero-pressure gradient, laminar boundary layers of adiabatic non-ideal compressible fluid flows. The entropy generation is expressed in terms of dissipation coefficient \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$C_\mathrm {d}$$\end{document} and its dependency on free-stream Mach number, fluid molecular complexity, and flow non-ideality is investigated systematically by means of a boundary layer code extended to treat fluids modeled with arbitrary equations of state. The results of the study show that the trend of dissipation coefficient follows that of an incompressible flow for complex fluid molecules like siloxanes in all thermodynamic and flow conditions. For simpler fluids like CO\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$_2$$\end{document} the trend becomes inversely proportional to the free-stream Mach number and the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$C_\mathrm {d}$$\end{document} value can significantly reduce in the non-ideal flow regime, where strong thermo-physical property gradients occur near the wall.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Entropy Generation in Laminar Boundary Layers of Non-Ideal Fluid Flows


    Additional title:

    Lect.Notes Mechanical Engineering


    Contributors:

    Conference:

    International Seminar on Non-Ideal Compressible-Fluid Dynamics for Propulsion & Power ; 2018 ; Bochum, Germany October 04, 2018 - October 05, 2018



    Publication date :

    2020-07-09


    Size :

    14 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Cross Flows in Laminar Incompressible Boundary Layers

    Hansen, Arthur G / Herzig, Howard Z | NTRS | 1956


    Cross flows in laminar incompressible boundary layers

    Hansen, Arthur G. / Herzig, Howard Z. | TIBKAT | 1956



    Laminar Boundary Layers

    McBain, G. D. | Wiley | 2012