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  • 1
    Book
    Book
    Visualization and intelligent design in engineering and architecture (1993)
    Bo : Computational Mechanics Publications,
    Details
    Title: Visualization and intelligent design in engineering and architecture
    Contributer: Connor, J.J. , Hernandez, S. , Murthy, T.K.S. , Power, H.
    Publisher: Bo : Computational Mechanics Publications,
    Year of publication: 1993
    Pages: 656 S.
    Type of Medium: Book
    Library Location Call Number Volume/Issue/Year Availability
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    Zuse Institute Berlin get availability status
  • 2
    Electronic Resource
    Electronic Resource
    On the geo-electromagnetic aspects of tornado initiation (1972)
    Springer
    Pure and applied geophysics 101 (1972), S. 221-230 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The reasoning that joule heating in multiple-stroke lightning flashes associated with an active tornado constitutes the major energy source for itsdrive is questioned. An electrical discharge is proposed as a mechanism for the formation of the initial vortexsink, a high specific-energy source being supplied by Joule heating in a leader-stroke coronal discharge of several hundred amperes and milliseconds duration. Magnetic pinch effects are invoked as a means of preventing large lateral heat losses from the ionised column and a resulting degradation of the energy source. Applying the equation for magneto-hydrostatic balance, it is shown that magnetic pinch exerted on the column by the current-induced magnetic field alone is insufficient to achieve balance and thus prevent energy losses. Qualitative arguments are used to demonstrate that the pinch effect can be enhanced through the interaction with the external, geomagnetic field. Observational evidence is presented to support the hypothesis of geomagnetic control for tornado initiation on a global scale. It is seen in large differences of tornado frequency between regions on the surface of the Earth featured by comparable pre-requisite thunderstorm frequency but significant differences in geomagnetic intensity which qualitatively agree with the predicted effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876786
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Multi-domain DRM boundary element method for non-isothermal non-Newtonian Stokes flow with viscous dissipation (2003)
    Bradford : Emerald
    International journal of numerical methods for heat & fluid flow 13 (2003), S. 736-768 
    Details
    ISSN: 0961-5539
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presents a boundary element method (BEM) based on a subdomain approach for the solution of non-Newtonian fluid flow problems which include thermal effects and viscous dissipation. The volume integral arising from non-linear terms is converted into equivalent boundary integrals by the multi-domain dual reciprocity method (MD-DRM) in each subdomain. Augmented thin plate splines interpolation functions are used for the approximation of field variables. The iterative numerical formulation is achieved by viewing the material as divided into small elements and on each of them the integral representation formulae for the velocity and temperature are applied and discretised using linear boundary elements. The final system of non-linear algebraic equations is solved by a modified Newton's method. The numerical examples include non-Newtonian problems with viscous dissipation, temperature-dependent viscosity and natural convection due to bouyancy forces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09615530310498402
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    An efficient direct BEM numerical scheme for heat transfer problems using Fourier series (2000)
    Bradford : Emerald
    International journal of numerical methods for heat & fluid flow 10 (2000), S. 687-720 
    Details
    ISSN: 0961-5539
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The main objective is to develop an efficient BEM scheme for the numerical solution of two-dimensional heat problems. Our scheme will be of the re-initialization type, in which the domain integrals are computed by a recursion relation which depends only on the boundary temperature and flux at previous time step. To obtain the re-initialization approach, we will use in the integral representation formula a Green function corresponding to zero temperature in a box containing the original domain, instead of using the classical free space fundamental solution. This Green function is given in terms of the original fundamental solution plus a regular solution of the heat equation inside the domain under consideration. It can therefore be used in the integral representation formula of the heat equation (direct formulation) to obtain the solution of a heat problem in such a domain. The Green function mentioned can be obtained by the images method, and the resulting source series can also be rewritten in terms of a double Fourier series, that we will use in the domain integral of the integral representation formula to transform such integral into equivalent surface integrals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09615530010350417
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    On reflection of a planar solitary wave at a vertical wall
    Amsterdam : Elsevier
    Wave Motion 6 (1984), S. 183-195 
    Details
    ISSN: 0165-2125
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0165-2125(84)90014-3
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Chrysomela Banksii (1874)
    [s.l.] : Nature Publishing Group
    Nature 10 (1874), S. 419-419 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN answer to Mr. Moggridge (NATURE, vol. x. p. 355), his conjecture as to Chrysomela Banksii is correct; though whether the fluid it emits is irritating or not I cannot say. It is a habit possessed by the allied generæ Linæ and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/010419b0
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    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Weakly nonlinear instability of the flow of two immiscible liquids with different viscosities in a pipe
    Amsterdam : Elsevier
    Fluid Dynamics Research 7 (1991), S. 215-228 
    Details
    ISSN: 0169-5983
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0169-5983(91)90015-B
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Some comments on the use of radial basis functions in the dual reciprocity method (1998)
    Springer
    Computational mechanics 22 (1998), S. 61-69 
    Details
    ISSN: 1432-0924
    Keywords: Key words DRM; thin plate spline; multiquadrics; the method of fundamental solutions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract We comment on the use of radial basis functions in the dual reciprocity method (DRM), particularly thin plate splines as used in Agnantiaris, Polyzos and Beskos (1996). We note that the omission of the linear terms could have biased the numerical results as has occurred in several previous studies. Furthermore, we show that a full understanding of the convergence behavior of the DRM requires one to consider both interpolation and BEM errors, since the latter can offset the effect of improved data approximation. For a model Poisson problem this is demonstrated theoretically and the results confirmed by a numerical experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050339
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Conservative interpolation for the boundary integral solution of the Navier–Stokes equations (2000)
    Springer
    Computational mechanics 26 (2000), S. 507-513 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The Dual Reciprocity Method (DRM) is a technique to transform the domain integrals that appear in the boundary element method into equivalent boundary integrals. In this approach the non-linear terms are usually approximated by mathematical interpolation applied to the convective terms of the form of the Navier–Stokes equations. In this paper we introduce a conservative interpolation scheme that satisfies the continuity equation and performs better than pure mathematical interpolation. The new scheme together with a subdomain variation of the dual reciprocity method allows better approximation of the non-linear terms in the Navier–Stokes equations for moderate Reynolds number.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660000187
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Some comments on the use of Radial Basis Functions in the Dual Reciprocity Method (1998)
    Springer
    Computational mechanics 21 (1998), S. 141-148 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract We comment on the use of radial basis functions in the dual reciprocity method (DRM), particularly thin plate splines as used in Agnantiaris et al. (1996). We note that the omission of the linear terms could have biased the numerical results as has occurred in several previous studies. Furthermore, we show that a full understanding of the convergence behavior of the DRM requires one to consider both interpolation and BEM errors, since the latter can offset the effect of improved data approximation. For a model Poisson problem this is demonstrated theoretically and the results confirmed by a numerical experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050290
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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