Searched for: subject:"computational%5C+fluid%5C+dynamics"
(81 - 100 of 111)

Pages

document
Alauzet, F. (author)
This paper presents an accurate approach to simulate the sonic boom of a supersonic aircraft. The near field flow is modeled by the conservative Euler equations and is solved using a finite volume approach on adapted unstructured tetrahedral meshes. Then, from the CFD solution, the pressure distribution under the aircraft is extracted and used...
conference paper 2006
document
Torano, J. (author), Rodriguez, R. (author), Diego, I. (author)
In the framework of the Research Project CTM2005-00187/TECNO, “Prediction models and prevention systems in the particle atmospheric contamination in an industrial environment” of the Spanish National R+D Plan of the Ministry of Education and Science, 2004-2007 period, there have been developed several CFD models to simulate particulated material...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
A monomial chaos approach is proposed for efficient uncertainty quantification in nonlinear computational problems. Propagating uncertainty through nonlinear equations can still be computationally intensive for existing uncertainty quantification methods. It usually results in a set of nonlinear equations which can be coupled. The proposed...
conference paper 2006
document
Frolov, S.M. (author), Basevich, V.Y. (author), Smetanyuk, V.A. (author), Belyaev, A.A. (author), Pasman, H.J. (author)
Experiments on forced ignition of extremely fuel-rich n-butane-oxygen mixture with the equivalence ratio of 23 in the standard 20-liter spherical vessel at elevated initial pressure (4.1 bar) and temperature (500 K) reveal the nonmonotonic influence of the forced ignition delay time on the maximum explosion pressure and the maximum rate of...
conference paper 2006
document
Loeven, A. (author), Witteveen, J.A.S. (author), Bijl, H. (author)
In this paper a Two Step approach with Chaos Collocation for efficient uncertainty quantification in computational fluid-structure interactions is followed. In Step I, a Sensitivity Analysis is used to efficiently narrow the problem down from multiple uncertain parameters to one parameter which has the largest influence on the solution. In Step...
conference paper 2006
document
Frolov, S.M. (author), Basevich, V.Y. (author), Smetanyuk, V.A. (author), Belyaev, A.A. (author), Pasman, H.J. (author)
Experiments on forced ignition of extremely fuel-rich n-butane-oxygen mixture with the equivalence ratio of 23 in the standard 20-liter spherical vessel at elevated initial pressure (4.1 bar) and temperature (500 K) reveal the nonmonotonic influence of the forced ignition delay time on the maximum explosion pressure and the maximum rate of...
conference paper 2006
document
Vos, W. (author), De Backer, J. (author), Devolder, A. (author), Partoens, B. (author), Parizel, P. (author), De Backer, W. (author)
Functional imaging of the respiratory system is a new domain where the respiratory dynamics (such as airflow in the lungs and particle deposition) are studied by means of modern engineering techniques. A three dimensional model of a patient specific bronchial tree is constructed from a computed tomography scan. By segmenting the desired region...
conference paper 2006
document
Witteveen, J.A.S. (author), Bijl, H. (author)
A monomial chaos approach is proposed for efficient uncertainty quantification in nonlinear computational problems. Propagating uncertainty through nonlinear equations can still be computationally intensive for existing uncertainty quantification methods. It usually results in a set of nonlinear equations which can be coupled. The proposed...
conference paper 2006
document
De Backer, J. (author), Vos, W. (author), Vanderveken, O. (author), Devolder, A. (author), Braem, M. (author), Van Dyck, D. (author), De Backer, W. (author)
Obstructive Sleep Apnea (OSA) is a condition in which the patient repeatedly stops breathing during sleep due to the collapse of the upper airway. The upper airway collapse is caused by a relaxation of the upper airway muscles, combined with a decrease in intraluminal pressure and hence an increase in external pressure from the surrounding...
conference paper 2006
document
Loeven, A. (author), Witteveen, J.A.S. (author), Bijl, H. (author)
In this paper a Two Step approach with Chaos Collocation for efficient uncertainty quantification in computational fluid-structure interactions is followed. In Step I, a Sensitivity Analysis is used to efficiently narrow the problem down from multiple uncertain parameters to one parameter which has the largest influence on the solution. In Step...
conference paper 2006
document
Araslanov, S.F. (author)
With the use of the Newton method, a new numerical method previously published [1] for solving the three-dimensional Navier-Stokes equations, is theoretically proved for the most simple case of one-dimensional acoustic equations. The convergence of iteration scheme is proved. In this paper, we also recall some theoretical and numerical results...
conference paper 2006
document
Schwamborn, D. (author), Gerhold, T. (author), Heinrich, R. (author)
This paper gives an overview of the TAU-Code, DLR's system for complex flow simulations on unstructured hybrid grids. Starting from a short description of the system and its components, e.g. mesh adaptation or grid deformation, its basic capabilities are discussed. Thereafter recent and on-going developments are presented, such as the adjoint...
conference paper 2006
document
Majewski, J. (author)
The paper deals with the algorithm for unsteady anisotropic adaptation. The adaptation is using the remeshing approach to create a new refined grid. The grid is generated in computational space defined by metric field based on the tensor error indicator. The verification of the method is done first for 2D supersonic flow in a channel with...
conference paper 2006
document
Ayub Akhtar, M. (author), Sohaib, M. (author), Rafique, M. (author)
A time dependent Computational Fluid Dynamics analysis of gas jets impinging onto liquid pools has been conducted. The aim of the study is to obtain a better understanding of highly complex, and industrially relevant flows in jetting system. Three different multiphase models, i.e., The Eulerian model, the volume of fluid model and the mixture...
conference paper 2006
document
Liu, Y. (author), Tang, Q. (author), Fox, R.O. (author)
Computational fluid dynamics (CFD) is a useful tool for modeling chemical reactors. However, because the design goals and expected outcomes are different than in "traditional'' CFD applications, chemical reactors require special attention to the treatment of chemical reactions, and heat and mass transfer. Here we provide an overview of the...
conference paper 2006
document
Ham, D.A. (author), Pietrzak, J. (author), Stelling, G.S. (author)
A new scheme for the construction on an unstructured grid of the streamlines of the three-dimensional shallow water equations is presented. The qualitative advantages of the scheme, notably closed streamlines and realistic treatment of closed boundaries, are derived and the spatial accuracy is demonstrated. Semi-Lagrangian advection schemes...
journal article 2005
document
Zhou, B. (author)
doctoral thesis 2005
document
Van Wageningen, W.F.C. (author)
The main goal of the project was the development of a plug flow reactor for the reduction of heavy metals (Cu2+) from industrial waste streams. Potential application of the reduction process inside The Netherlands lies in the IC and galvanic industry, where small waste streams containing aqueous copper exist. Outside The Netherlands, the process...
doctoral thesis 2005
document
Gommeren, H.J.C. (author), Heitzmann, D.A. (author), Moolenaar, J.A.C. (author), Scarlett, B. (author)
journal article 2000
document
Prananta, B.B. (author)
doctoral thesis 1999
Searched for: subject:"computational%5C+fluid%5C+dynamics"
(81 - 100 of 111)

Pages