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Experimental validation of a numerical model for locally supported steel silos Ghent University
Generally, the decisive design state of locally supported axially compressed steel silos is buckling. To predict the elasto-plastic buckling load with sufficient accuracy, it is recommended to replace conservative hand calculations by computer simulations. In this way, the buckling load can be predicted based on the actual stress distribution and stress concentrations in the shell wall taking into account the effect of imperfections. The latter ...
A Numerical Model for the Creep of Fiber Reinforced Concrete KU Leuven
In fiber reinforced concrete (FRC), fibers provide a post-cracking tensile strength to the concrete by taking up tensile forces after matrix cracking. The introduction of FRC in the Model Code has given designers guidelines and rules to use FRC in structural applications. However, the long-term performance and behavior of cracked FRC needs to be accounted for, but no design rules are given in the Model Code. A fundamental understanding of the ...
A numerical model for structural settlements due to deformation accumulation in granular soils under repeated small amplitude dynamic loading KU Leuven Ghent University
Repeated small amplitude dynamic loading of the soil in the vicinity of buildings, as arising from traffic or construction activities, may cause differential foundation settlements and structural damage. In this paper, a numerical model for soils under repeated dynamic loading is formulated. It is assumed that the dynamic part of the loading is small with respect to the static part, reflecting the stress conditions in the soil underneath ...
The Numerical Model for Direct Evaporative Cooler KU Leuven
This paper presents a numerical model for a compact direct-contact cross-flow air/water heat exchanger where evaporating water cools down an air stream, and where an innovatively designed metallic direct evaporative pad enhances air-water interaction. The numerical model implements energy and mass conservation equations of humid air and water in a one-dimensional geometry by applying correlations for heat and mass transfer coefficients. The ...
Scaldis-Coast: An integrated numerical model for the simulation of the Belgian Coast morphodynamics Flanders Hydraulics
In the present study, state-of-the-art numerical modelling tools are employed for the prediction of the long-term evolution of hydrodynamics and morphodynamics, in order to contribute to the strategic decision-making for the protection of the Belgian Coast from (extreme) sea level rise and climate change. To this end, a complex coastal model, which is referred as the Scaldis-Coast model, is being developed by use of TELEMAC-MASCARET, an open ...
Numerical extraction of a macroscopic PDE and a lifting operator from a lattice Boltzmann model University of Antwerp
Lifting operators play an important role in starting a lattice Boltzmann model from a given initial density. The density, a macroscopic variable, needs to be mapped to the distribution functions, mesoscopic variables, of the lattice Boltzmann model. Several methods proposed as lifting operators have been tested and discussed in the literature. The most famous methods are an analytically found lifting operator, like the Chapman--Enskog expansion, ...
Evaluation of a numerical model for tapered threaded connections subjected to combined loading using enhanced experimental measurement techniques Ghent University
Threaded connections used in the oil and gas industry have to withstand ever increasing axial and pressure loads. The structural behavior of these joints can be predicted by using numerical models, provided these are soundly validated. Within this paper, a finite element model of tapered, shoulderless connections containing a trapezoidal thread type is experimentally validated conducting a test load envelope experiment (TLE) and a tensile ...
A multiscale numerical model for structures with internal frictional contacts KU Leuven
Many engineering applications are related to or deal with materials and systems having internal frictional contacts in their structure. The effects induced by these contacts, such as friction-induced heat generation, wear, nonlinear vibrations, etc., can be significant and cannot be ignored in numerical models. However, friction models are computationally cumbersome because they often require implicit data exchange procedures to describe the ...
Accurate simulation of transient landscape evolution by eliminating numerical diffusion: the TTLEM 1.0 model KU Leuven
Landscape evolution models (LEMs) allow the study of earth surface responses to changing climatic and tectonic forcings. While much effort has been devoted to the development of LEMs that simulate a wide range of processes, the numerical accuracy of these models has received less attention. Most LEMs use first-order accurate numerical methods that suffer from substantial numerical diffusion. Numerical diffusion particularly affects the solution ...