Results 21 to 30 of about 2,832,536 (290)

LoD2BIM: A New Workflow for reconstructing and converting LoD2 Model to Information-rich IFC Model for Existing Building [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Numerous existing buildings in Germany lack corresponding BIM models. Advanced analysis and visualization purposes, including indoor navigation, energy demand simulations, and building materials recycling on these buildings presents significant ...
Z. Xia, U. Rüppel
doaj   +1 more source

Topology optimization of impeller blades in baffled stirred tanks

open access: yesCase Studies in Chemical and Environmental Engineering, 2020
An approach for the numerical topology optimization of baffled stirred tanks is presented and demonstrated exemplarily on impeller blades. The methodology is based on the well-known Brinkman penalization method, which is used to alter the impeller blade ...
Jakob Munz, Michael Schäfer
doaj   +1 more source

Numerical Modelling of Microstructure Evolution in Friction Stir Welding (FSW)

open access: yesMetals, 2018
This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination of an apropos kinematic framework for the local simulation of FSW processes
Narges Dialami   +2 more
doaj   +1 more source

Numerical Methods for Singular Perturbation Problems [PDF]

open access: yes, 1981
Consider the two-point boundary value problem for a stiff system of ordinary differential equations.
Kreiss, Barbro, Kreiss, Heinz-Otto
core   +1 more source

Effect of the Tool Tilt Angle on the Heat Generation and the Material Flow in Friction Stir Welding

open access: yesMetals, 2018
This work studies the effect of the tool tilt angle on the generated heat and the material flow in the work pieces joint by Friction Stir Welding (FSW). An apropos kinematic framework together with a two-stage speed-up strategy is adopted to simulate the
Narges Dialami   +2 more
doaj   +1 more source

Numerical methods with Sage

open access: yesTbilisi Mathematical Journal, 2012
Numpy and SciPy are program libraries for the Python scripting language, which apply to a large spectrum of numerical and scientific computing tasks. The Sage project provides a multiplatform software environment which enables one to use, in a unified way, a large number of software components, including Numpy and Scipy, and which has Python as its ...
Ruotsalainen, Lauri, Vuorinen, Matti
openaire   +4 more sources

Numerical methods for one-dimensional aggregation equations [PDF]

open access: yes, 2014
We focus in this work on the numerical discretization of the one dimensional aggregation equation $\pa_t\rho + \pa_x (v\rho)=0$, $v=a(W'*\rho)$, in the attractive case.
James, Francois, Vauchelet, Nicolas
core   +5 more sources

Warpage Analysis and Control of Thin-Walled Structures Manufactured by Laser Powder Bed Fusion

open access: yesMetals, 2021
Thin-walled structures are of great interest because of their use as lightweight components in aeronautical and aerospace engineering. The fabrication of these components by additive manufacturing (AM) often produces undesired warpage because of the ...
Xufei Lu   +5 more
doaj   +1 more source

A robust algorithm for implicit description of immersed geometries within a background mesh

open access: yesAdvanced Modeling and Simulation in Engineering Sciences, 2018
The paper presents a robust algorithm, which allows to implicitly describe and track immersed geometries within a background mesh. The background mesh is assumed to be unstructured and discretized by tetrahedrons.
Daniel Baumgärtner   +4 more
doaj   +1 more source

User behaviour models to forecast electricity consumption of residential customers based on smart metering data

open access: yesEnergy Reports, 2022
This paper presents a novel approach to forecast day-ahead electricity consumption for residential households where highly irregular human behaviour plays a significant role.
Florencia Lazzari   +6 more
doaj   +1 more source

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