Št. zadetkov: 9
Doktorska disertacija
Oznake:
Microfluidics;gas dynamic virtual nozzle;flow focusing;micro-jet;convective instability;absolute instability;compressible multiphase flows;dripping;spurting;jetting;jet thickness;jet length;computational fluid dynamics;finite volume method;volume of fluid method;
The main aim of dissertation is to develop an experimentally verified computational fluid dynamic (CFD) model of micron-sized liquid jet, produced by an injection molded Gas Dynamic Virtual Nozzle (GDVN). In these nozzles, liquid jets are efficiently orientedly transporting mass and momentum. They a ...
Leto:
2018
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
gas dynamic virtual nozzle;micro-jet;compressible multiphase flow;finite volume method;volume of fluid;
In this paper we present a numerical study investigating the effects of nozzle geometry on stability, shape and flow characteristics of micron-sized liquid jets, produced by injection molded gas dynamic virtual nozzles (GDVNs) operating in vacuum. The jet characteristics are described as a function ...
Leto:
2018
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
serijska femtosekundna kristalografija;mikro-curek;brizganje;kapljanje stisljiv dvofazni tok;metoda končnih volumnov;metoda volumna tekočine;zasnova odprtine šobe;serial femtosecond crystallography;micro-jet;jetting;dripping;compressible two-phase flow;finite volume method;volume of fluid method;nozzle orifice design;
Liquid micro-jets are crucial for sample delivery of protein crystals and other macromolecular samples in serial femtosecond crystallography. When combined with MHz repetition rate sources, such as the European X-ray free-electron laser (EuXFEL) facility, it is important that the diffraction pattern ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
method of fundamental solutions;method of regularized sources;potential flow;neumann boundary conditions;
This paper describes the development of the Method of Regularized Sources for potential flow problems. It is based on the modification of the fundamental solution near the source point by replacing the singularity with a blob in form of a steep rational function. This allows to solve the problems in ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
serial crystallography;micro jets;multiphase flow;fluid rheology;non-Newtonian fluid;flow focusing;
The present numerical study assesses the jet length, diameter and velocity of various non-Newtonian power-law fluids of a gas dynamic virtual nozzle. A related two-phase flow problem is formulated within the mixture framework and solved with the finite volume method and volume of fluid interface tre ...
Leto:
2024
Vir:
Inštitut za kovinske materiale in tehnologije (IMT)
Izvirni znanstveni članek
Oznake:
dendritic solidification;Stokes flow;phase-field method;space-time adaptivity;meshless methods;RBF-FD;modified method of regularised sources;
Purpose – This study aims to simulate the dendritic growth in Stokes flow by iteratively coupling a domain and boundary type meshless method. Design/methodology/approach – A preconditioned phase-field model for dendritic solidification of a pure supercooled melt is solved by the strong-form space-ti ...
Leto:
2023
Vir:
Inštitut za kovinske materiale in tehnologije (IMT)
Izvirni znanstveni članek
Oznake:
compressible flow;ideal gas;axisymmetry;diffuse approximate method;PISO;
The meshless Diffuse Approximate Method (DAM) is for the first time formulated and applied to simulate the compressible Newtonian flow of an ideal gas in an axisymmetric tube with varying cross-sections. The problem is structured by coupled partial differential equations for conservation of mass, mo ...
Leto:
2022
Vir:
Fakulteta za strojništvo (UL FS)
Projektna dokumentacija (idejni projekt, izvedbeni projekt)
Oznake:
XFEL;simulacije;mikrocurki s plinom;metoda fundamentalnih rešitev;
INNOVATIVE METHODS FOR IMAGING WITH THE USE OF X-RAY FREE ELECTRON LASER (XFEL) AND SYNCHROTRON SOURCES
Leto:
2016
Vir:
Repozitorij Univerze v Novi Gorici (RUNG)
Izvirni znanstveni članek
Oznake:
mikro curek;električno polje;fokusiranje toka;Taylorjev stožec;plinsko dinamične virtualne šobe;micro jet;electric field;experimental study;flow focusing;Taylor cone;gas dynamic virtual nozzles;
The results of an experimental study of micro-jets produced with a gas dynamic virtual nozzle (GDVN) under the influence of an electric field are provided and discussed for the first time. The experimental study is performed with a 50% volume mixture of water and ethanol, and nitrogen focusing gas. ...
Leto:
2023
Vir:
Inštitut za kovinske materiale in tehnologije (IMT)