Download presentation

Presentation is loading. Please wait.

Published byFrancisco Burbridge Modified over 2 years ago

1
Magnetic Drug Targeting, Ferrofluidics

2
Magnetic Drug Targeting: Ferrofluidics

3
Magnetic Drug Targeting Ferrofluids (magnetic liquids) as drug carriers Drug targeting applications Localized chemotherapy Less damage to healthy cells Multiphysics: –Magntostatics –Fluid Flow This model was provided by Daniel J. Strauss, The Institute for New Materials, Inc., www.inm-gmbh.de

4
Geometry – 2D Approximation

5
The Math behind the Magnetostatics Maxwells law for the magnetic field and current (static) Gauss’ theorem for the magnetic flux density (B-field) Definition of a magnetic vector potential A Constitutive relation to tie B-H (M is magnetization) Combining the above equations gives, for zero currents

6
The Math behind the Fluid Flow Incompressible Navier Stoke’s equations

7
The Math behind the Fluid Flow Incompressible Navier Stoke’s equations Magnetic Volume Force for a Ferrofluid: M = magnetization H = magnetic field

8
The Math behind the Fluid Flow Magnetic Volume Force for a Ferrofluid x,y, components

9
Boundary Conditions Magnetostatics –Reasonably far away from the magnet, magnetic insulation is applied: A z =0 Navier Stokes –A pulsating inlet velocity simulates the heart beat. –No-slip on walls –Pressure on outlet A z =0

10
Results – magnetic field The magnetic flux density has a maximum near the sharp corners. White areas are excluced from the plot range for clarity. The interesting area is the blood vessel.

11
Results – Velocity Field at max blood throughput (heat beat), t=0.25. The flow field is clearly distorted by the magnet

12
Results – Velocity Field at zero throughput, t=1 Even though the net flow is zero, we can see agitation in eddies generated by the magnetic field.

13
Results – movie

14
Results - Conclusions Certain points near the magnetic disturbances will be exposed to a larger flow rate per unit area, (close to the reddish areas) whereas some parts will get less exposed (blue areas near vessel wall). COMSOL Multiphysics is a good tool to test different flowrates and geometries to get guidance how to set up magnetic targeting equipment.

Similar presentations

OK

Louisiana Tech University Ruston, LA 71272 Slide 1 Time Averaging Steven A. Jones BIEN 501 Monday, April 14, 2008.

Louisiana Tech University Ruston, LA 71272 Slide 1 Time Averaging Steven A. Jones BIEN 501 Monday, April 14, 2008.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on channels of distribution definition Ppt on chapter electricity for class 10th Ppt on european union Ppt on object-oriented concepts in java with examples Ppt on save tigers in india download Ppt on water activity chart Jit ppt on manufacturing plant Ppt on earth moon and sun Ppt on modern methods of rainwater harvesting Ppt on e commerce business models