Search results for "cfd"
showing 10 items of 249 documents
CFD prediction of bubbles local gas hold-up in 2-dimensional gas-solid fluidized beds
2008
Tirdzniecības stratēģija un tās pielietošana CFD valūtas tirdzniecībā
2021
Darba autora iepriekšējā pieredze, nodarbojoties ar CFD instrumentiem, rāda, ka reālas iespējas nopelnīt ir, lai gan jāuzsver, ka peļņa pārsvarā ir gūta īstermiņā, ilgtermiņā, tomēr, rezultāti ir bijuši negatīvi. Galvenais trūkums kurš ir konstatēts, ir tas, ka trūkst stratēģiski pārdomātas rīcības tirdzniecības darījumos, kurš balstītos uz konkrētām darbībām, spētu dot sagaidāmus rezultātus no tirdzniecības ilgtermiņā. Negatīvā pieredze lika autoram aizdomāties par stratēģijas nozīmīgumu tirdzniecības darījumu veikšanā un nepieciešamību pētīt tirdzniecības stratēģiju izveides principus. Darba mērķis: pamatojoties uz teorētiskām atziņām par tirdzniecības stratēģijas izveidi izstrādāt un apr…
Study of the performances of a fluidynamic actuator
2018
Aim of this paper is presented a new methodology to study how different geometric parameters affect the performance of a hydraulic actuator. Preliminarily, the real working conditions of a hydraulic machine have been simulated by means of a CFD module. After, to test the reliability of the simulations, the obtained numerical results have been compared with the experimental data of a real prototype. This comparison demonstrates a good level of agreement between numerical and experimental results. Different simulations have been setup by modifying the actuator geometry and evaluating the efficiency of every analysed configuration. The results of this study give useful guidelines for the choic…
CFD simulation of solid-liquid suspension startup in a stirred tank
2008
Top-covered unbaffled stirred tanks: experiments and numerical simulations
2015
In this work computational fluid dynamics was employed to predict the flow field of an unbaffled stirred tank from steady to turbulent conditions
On the Simulation of Solid Particle Distribution in Multiple Impeller Agitated Tanks via Computational Fluid Dynamics
1998
Application of SPH numerical procedures to hydraulic problems
2014
A CFD MODEL FOR THE PERFORMANCE PREDICTION OF HOLLOW FIBRE HAEMODIALYSIS MODULES
2020
Objectives: The model proposed aims to predict how geometric, transport and operative parameters affect the performances of hollow-fibre membrane modules for haemodialysis, especially solute clearance. Methods: A two-scale approach was used. Preliminarily, dialysate flow and mass transfer around fibre bundles were simulated at Unit Cell level, i.e. in a single periodic unit of the bundle. For a given porosity, both regular lattices (square or hexagonal) and random fibre arrangements were studied. From the predicted friction coefficients and Sherwood numbers, permeability and solute exchange terms were derived to be used in a porous media model of the whole module. Solute concentrations on t…