The inviscid equations of motion for a slender body in a stratified fluid are formulated in a way which illustrates the relationship between the vorticity in the flow and the internal wave behavior. This formulation makes it clear that the problem admits a singular perturbation expansion of the solution if the density variation is small (large Vaisala length). Analytic solutions valid in the near field are obtained for the case of a finite-thickness constant thermocline. The slender body approximation is found to be invalid near the body; the use of this approximation results in a singularity behind the body which extends to infinity. The reason for the appearance of the singularity is given, and a technique for eliminating it is outlined. The effect of the singularity on the solution at the surface is found to be small. Typical behavior of the near-field surface current is presented in graphical form. The near-field surface disturbance is found to result primarily from the basic body potential flow field with corrections made as a result of the stratification.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    The near-field disturbance created by a body in a stratified medium with a free surface


    Additional title:

    Nahfeldstoerungen verursacht durch einen Koerper in einem geschichteten Medium mit freier Oberflaeche


    Contributors:
    Murdock, J. (author)

    Published in:

    Publication date :

    1977


    Size :

    7 Seiten, 10 Bilder, 1 Tabelle, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    MOBILE BODY DISTURBANCE DETECTION DEVICE, MOBILE BODY DISTURBANCE DETECTION SYSTEM, AND MOBILE BODY DISTURBANCE DETECTION PROGRAM

    UEDA KENKI / TACHIBANA RYOSUKE / KAWABATA SHINICHIRO et al. | European Patent Office | 2022

    Free access

    Agile Disturbance Free Payload

    Pedreiro, Nelson / Gonzales, Michael / Foster, Brian et al. | AIAA | 2005


    Failure Mechanism of Anchored Roadway Surrounding Rocks under Near-Field Dynamic Disturbance

    Wang, Zhengyi / Dou, Linming / Wang, Guifeng et al. | Springer Verlag | 2024


    Disturbance-Free Payload Concept Demonstration

    Pedreiro, Nelson / Carrier, Alain / Lorell, Kenneth et al. | AIAA | 2002


    SWBLI at Near-Surface Stratified Plasma: Comparison of Test Results to CFD Modeling Data

    Leonov, Sergey B. / Andrews, Philip S. / Wagner, Davis E. et al. | AIAA | 2024