Hossein Hadi Najafabadi

Hossein Hadi Najafabadi
University of Auckland · Department of Engineering Science

MSc

About

11
Publications
3,294
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254
Citations

Publications

Publications (11)
Article
An accurate understanding of laparoscopic surgical smoke behaviour is essential to enhance the healthcare of patient and operating room staff and to achieve better optical clarity for the surgeon. This work develops a numerical model of surgical smoke behaviour during laparoscopy. A computational fluid dynamics model was created for a rectangular c...
Chapter
When performing extensional ER tests for the characterization of electro-rheological fluids, the time between applying the electric field and triggering the experiment (delay time) plays an important role in ER behaviour of the sample. The current study investigates the delay time effect in extensional ER characterization. The ER sample used in the...
Article
Full-text available
This work introduces a novel design of a fixture to be adapted to the commercial version of the capillary breakup extensional rheometer (CaBER), here termed as an extensional magneto-rheological fixture (ExMRFx), that allows the characterization of magnetic fluids under uniaxial extensional flow. The fixture consists of four solenoids that generate...
Article
Full-text available
A new electrorheological cell for the Capillary Breakup Extensional Rheometer (Haake™ CaBER 1™, Thermo Scientific) allowing the analysis of the rheological properties of complex fluids under the simultaneous application of an extensional flow and an electric field has been developed and tested. In this study, the add-on is described in full detail...
Technical Report
Full-text available
I would like to share with you that we are currently equipped in our research group with magnetorheological and electrorheological cells (both patents pending) specifically designed to work with the Capillary BreakUp Extensional Rheometer (CaBER). If you are interested in collaborating with us, please send me a message. "Capillary Breakup Extension...
Article
Full-text available
The present study deals with CFD analysis of laminar forced convective heat transfer of Al2O3/water nanofluid in a converging microchannel heat sink under imposed pressure difference. A novel approach for numerical treatment of nanofluid flow and heat transfer problems was discussed and examined. A boundary condition for partial slip flow due to de...
Article
Full-text available
In this paper, three-dimensional incompressible laminar fluid flow in a rectangular microchannel heat sink (MCHS) using Al2O3/water nanofluid as a cooling fluid is numerically studied. CFD prediction of fluid flow and forced convection heat transfer properties of nanofluid using single-phase and two-phase model (Eulerian-Eulerian approach) are comp...
Article
Full-text available
A novel electrospun chitosan/graphene oxide (GO) nanofibrous adsorbent was successfully developed by an electrospinning process. The adsorption behaviors of Cu2+, Pb2+ and Cr6+ metal ions from aqueous solutions using chitosan/GO nanofibers were investigated. The composite nanofibers were characterized by FTIR and SEM and TEM analysis. Kinetic and e...
Article
Full-text available
A novel electrospun chitosan/graphene oxide (GO) nanofibrous adsorbent was successfully developed by an electrospinning process. The adsorption behaviors of Cu2+, Pb2+ and Cr6+ metal ions from aqueous solutions using chitosan/GO nanofibers were investigated. The composite nanofibers were characterized by FTIR and SEM and TEM analysis. Kinetic and e...

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Projects

Project (1)
Project
Laparoscopic procedures rely on the optimal visualisation of the insufflated abdomen. The surgical smoke produced by electrosurgical instruments can obscure camera vision and pose potential risks to the patient and operating room staff due to its chemical composition. This project aims to provide a better understanding of surgical smoke behaviour during laparoscopic procedures.