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  • Cambridge University Press (CUP)  (2)
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  • Cambridge University Press (CUP)  (2)
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  • 1
    Online Resource
    Online Resource
    On steady convection in a porous medium
    Cambridge University Press (CUP) ; 1972
    In:  Journal of Fluid Mechanics Vol. 54, No. 1 ( 1972-07-11), p. 153-161
    Details
    In: Journal of Fluid Mechanics, Cambridge University Press (CUP), Vol. 54, No. 1 ( 1972-07-11), p. 153-161
    Abstract: For convection in a porous medium the dependence of the Nusselt number on the Rayleigh number is examined to sixth order using an expansion for the Rayleigh number proposed by Kuo (1961). The results show very good agreement with experiment. Additionally, the abrupt change which is observed in the heat transport at a supercritical Rayleigh number may be explained by a breakdown of Darcy's law.
    Type of Medium: Online Resource
    ISSN: 0022-1120 , 1469-7645
    URL: Article
    DOI: 10.1017/S002211207200059X
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1972
    detail.hit.zdb_id: 1472346-3
    detail.hit.zdb_id: 218334-1
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Wave forces on three-dimensional floating bodies with small forward speed
    Cambridge University Press (CUP) ; 1991
    In:  Journal of Fluid Mechanics Vol. 227 ( 1991-06), p. 135-160
    Details
    In: Journal of Fluid Mechanics, Cambridge University Press (CUP), Vol. 227 ( 1991-06), p. 135-160
    Abstract: A boundary-integral method is developed for computing first-order and mean second-order wave forces on floating bodies with small forward speed in three dimensions. The method is based on applying Green's theorem and linearizing the Green function and velocity potential in the forward speed. The velocity potential on the wetted body surface is then given as the solution of two sets of integral equations with unknowns only on the body. The equations contain no water-line integral, and the free-surface integral decays rapidly. The Timman-Newman symmetry relations for the added mass and damping coefficients are extended to the case when the double-body flow around the body is included in the free-surface condition. The linear wave exciting forces are found both by pressure integration and by a generalized far-field form of the Haskind relations. The mean drift force is found by far-field analysis. All the derivations are made for an arbitrary wave heading. A boundary-element program utilizing the new method has been developed. Numerical results and convergence tests are presented for several body geometries. It is found that the wave exciting forces and the mean drift forces are most influenced by a small forward speed. Values of the wave drift damping coefficient are computed. It is found that interference phenomena may lead to negative wave drift damping for bodies of complicated shape.
    Type of Medium: Online Resource
    ISSN: 0022-1120 , 1469-7645
    URL: Article
    DOI: 10.1017/S002211209100006X
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1991
    detail.hit.zdb_id: 1472346-3
    detail.hit.zdb_id: 218334-1
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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