Y. Zheng, B. Xin
Donghua University, Shanghai, China
Shanghai University of Engineering Science, Shanghai, China
The electric field plays a very important role in the electrospinning process, which needs to be seriously considered in the electrospinning configuration developing. High voltage involved in electrospinning process leads to difficulty in measuring the electric field. Numerical simulation is used to design the electric field, and experiments are carried out to validate the spinneret and ...
Georg-August University, Göttingen, Germany
Viscous fingering is a topic of interest since the beginning of computational fluid dynamics. Here we focus on the classical constellation of miscible displacement, as it has been investigated in Hele-Shaw cells. A temperature or salinity front is entering with a fluid that has a different viscosity. The pure 1D flow is destabilized by the Saffman-Taylor instability. Using COMSOL Multiphysics® ...
S. Sharma , Y. Pachuary , S. N. Akhtar , J. Ramkumar ,
 Indian Institute of Technology Kanpur, Kanpur, India
 Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, India
 Integral University, Lucknow, India
Laser drilling of titanium and its alloys is widely used in aerospace industry, as it offers selective removal of material at high accuracy and speed. However, laser drilling often inherits defects such as large heat affected zone, micro cracks and recast layer. These defects depend upon complex melting and solidification phenomena happening due to interaction of high-intensity laser with the ...
E. Mogilevskiy, R. Ferrer, L. Gaffney, C. Granados, M. Huyse, Yu. Kudryavtsev, S. Raeder, P. Van Duppen
KU Leuven, Instituut voor Kern- en Stralingsfysica, Leuven, Belgium
De Laval nozzles are used in supersonic aerodynamical tubes and engines. They are also employed for the production of cold gas jets to be used in chemical reactions studies. Recently, cold gas jets have been proposed of In-Gas Laser ionization Spectroscopy (IGLIS) The nozzle has a converging and a diverging part with a throat between them. High gas pressure and temperature, and low velocity ...
M.W. Siebert, and P.S. Fodor
Physics Department, Cleveland State University, Cleveland, Ohio, USA
In this work, the fluid flow over a 2D backward-facing step is analyzed in order to provide a case study for the use of different models for the blood dynamic viscosity in COMSOL Multiphysics. Three non-Newtonian models, as well as the Newtonian model are used to study the shear stresses and the reattachment length as a function of the fluid speed. The non-Newtonian models used in this study are ...
 Alpha Project Service, Vadodara, Gujarat, India
The interaction of a single particle in straight rectangular channel in laminar flow is modelled explicitly using the set of Navier Stokes equation for the fluid motion and Newton momentum equation for the particle motion in Cartesian coordinate system. The evaluation of integral force acting on the particle along with the behaviour of streamlines as a function of Reynolds number ReP < 120 is ...
P. L. Mills , A. Uchagawkar , M. Vasilev ,
 Texas A&M University - Kingsville, Kingsville, TX, USA
Introduction Velocity profiles in liquid films flowing over rotating conical surfaces are of considerable interest in industry. The efficiency of important process equipment, such as spinning cone columns, fluid degassers, centrifugal disc atomizers, centrifugal film evaporators, and rotating packed bed reactors, is greatly influenced by the nature of the fluid velocity distributions. Conical ...
Enthalpy Porosity Method for CFD Simulation of Natural Convection Phenomenon for Phase Change Problems in the Molten Pool and its Importance during Melting of Solids
Priyanshu Goyal, Anu Dutta, V.Verma, I. Thangamani, R.K. Singh
Bhabha Atomic Research Centre, Mumbai, India
Shielded transportation casks are commonly used for transportation and storage of radioactive waste materials. Design approval of such casks by regulatory authority is subject to its compliance with a thermal test (among other tests) Due to exposure of cask to fire , there is a possibility of melting of the shielding material (lead) used for the cask and need to evaluate extent of melting. ...
M. Diaz-Viera, D. Lopez-Falcon, A. Moctezuma-Berthier, and A. Ortiz-Tapia
Instituto Mexicano del Petroleo, México D.F., Mexico
The aim of the present work is to implement in COMSOL Multiphysics a multiphase fluid flow model in porous media, also known in the oil reservoir engineering literature as a black oil model, using a standard finite element approach. In particular, we are interested to apply this model coupled with a multiphase, multicomponent transport model to study Enhanced Oil Recovery processes at laboratory ...
D. Droste, F. Lindner, C. Mundt, M. Pfitzner
Universität der Bundeswehr, Munich, Bavaria, Germany
In this study we investigate the heat and mass transfer in a porous media with phase change. The liquid fluid is injected from one side and heated from the other side, where it leaves the porous material in a gaseous state. Dominant forces are capillary interactions and two-phase heat conduction. To model the process we use a two-phase mixture model on a macroscopic scale. This model is ...