Tackling fluid-flow problems involving intricate surface geometries has been the catalyst for a plethora of numerical investigations aimed at accommodating curved complex boundaries. An example is application body-fitted curvilinear coordinate transformation, where one-to-one correspondence grid points from non-orthogonal in physical domain to an orthogonal computational achieved. In lubricated...

Generation of test benches for large DSP behavioral models is a complicated, labor intensive task. Also, tests generated manually satisfy no formal definition of completeness. To address these needs, high level approaches to test bench development are employed which relieve the modeler of the details of this task. CASE tools are used to develop the test bench VHDL code, i.e., state machine beha...

The article considers the optimization of eigenvalues in electromagnetic cavities by means shape variations. field distribution and its frequency a radio-frequency cavity are governed Maxwell's eigenvalue problem. To this end, we utilize mixed formulation Kikuchi (1987) finite element discretization Nédélec Lagrange elements. is based on method mappings, where Piola transformation utilized to a...

Mechanical properties of alloys have a strong relation with microstructure and determination of their behavior can lead to multiple advantages. To obtain this goal, finite element method )FEM( is one of the best ways. In this study a series of experiments were carried out on the produced Ti-6Al-4V to obtain its mechanical characteristics and to prepare it for photographing in micro dimensions. ...

This work describes the in-plane uniaxial tensile mechanical properties of two-dimensional graded rectangular perforations metamaterials using numerical homogenization finite element approaches benchmarked by experimental results. The metamaterial configuration is based on patterns centre-symmetric perforated cells that can exhibit an auxetic (negative Poisson’s ratio) behavior. Global and loca...

In this paper, the conjugate gradient method coupled with adjoint problem is used in order to solve the inverse heat conduction problem and estimation of the strength of the time- dependent heat source using the temperature distribution at a point in a three layer system. Also, the effect of noisy data on final solution is studied. The numerical solution of the governing equations is obtained b...

The conflict between classical and modern theories of criticality is resolved by recognising that both theories work with approximate models, whose relative merits can be assessed by their response to efforts to refine them. Contrary to many claims, critical exponents are not tools fitted to discriminate between different models. True, Riemannian theory which characterises analytic functions in...

Here we present a ground-breaking new postulate for game theory. The first part of this postulate contains the axiomatic observation that all games are created by a designer, whether they are: e.g., (dynamic/static) or (stationary/non-stationary) or (sequential/one-shot) non-cooperative games, and importantly, whether or not they are intended to represent a non-cooperative Stackelberg game, the...

Harnessing the full I/O capabilities of a large-scale multiprocessor is difficult and requires a great deal of cooperation between the application programmer, the compiler and the operating (/file) system. Hence, the parallel I/O interface used by the application to communicate with the system is crucial in achieving good performance. We present a set of properties we believe that a good I/O in...

We present an algorithm for ray tracing displacement maps that requires no additional storage over the base model. Displacement maps are rarely used in ray tracing due to the cost associated with storing and intersecting the displaced geometry. This is unfortunate because displacement maps allow the addition of large amounts of geometric complexity into models. Our method works for models compo...