Friday, August 13, 2010

ISI Web of Knowledge Alert - Thompson, P

ISI Web of Knowledge Citation Alert

Cited Article: Thompson, P. A general boundary condition for liquid flow at solid surfaces
Alert Expires: 09 NOV 2010
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Multi-scale computational modelling of flow and heat transfer

Authors:
Drikakis, D; Asproulis, N

Author Full Names:
Drikakis, Dimitris; Asproulis, Nikolaos

Source:
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW 20 (5): 517-528 2010

Language:
English

Document Type:
Proceedings Paper

Author Keywords:
Modelling; Heat transfer; Fluid dynamics; Flow; Microscopy; Gas flow

KeyWords Plus:
PARTICLE-CONTINUUM SIMULATIONS; MOLECULAR-DYNAMICS SIMULATION; SURFACE-ROUGHNESS; FLUID-FLOW; GAS-FLOW

Abstract:
Purpose - The purpose of this paper is to present different approaches for applying macroscopic boundary conditions in hybrid multiscale modelling.
Design/methodology/approach - Molecular dynamics (MD) was employed for the microscopic simulations. The continuum boundary conditions were applied either through rescaling of atomistic velocities or resampling based on velocity distribution functions.
Findings - The methods have been tested for various fluid flows with heat transfer scenarios. The selection of the most suitable method is not a trivial task and depends on a number of factors such as accuracy requirements and availability of computational resource.
Originality/value - The applicability of the methods has been assessed for liquid and gas flows. Specific parameters that affect their accuracy and efficiency have been identified. The effects of these parameters on the accuracy and efficiency of the simulations are investigated. The study provides knowledge regarding the development and application of boundary conditions in multiscale computational frameworks.

Reprint Address:
Drikakis, D, Cranfield Univ, Dept Aerosp, Fluid Mech & Computat Sci Grp, Cranfield MK43 0AL, Beds, England.

Research Institution addresses:
[Drikakis, Dimitris; Asproulis, Nikolaos] Cranfield Univ, Dept Aerosp, Fluid Mech & Computat Sci Grp, Cranfield MK43 0AL, Beds, England

E-mail Address:
d.drikakis@cranfield.ac.uk

Cited References:
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Cited Reference Count:
35

Times Cited:
1

Publisher:
EMERALD GROUP PUBLISHING LIMITED; HOWARD HOUSE, WAGON LANE, BINGLEY BD16 1WA, W YORKSHIRE, ENGLAND

Subject Category:
Thermodynamics; Mathematics, Interdisciplinary Applications; Mechanics

ISSN:
0961-5539

DOI:
10.1108/09615531011048222

IDS Number:
632QL

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Title:
Numerical Simulation and Experimental Study of Polymer Micro Extrusion Flow

Authors:
Zhao, DY; Jin, YF; Wang, MJ; Li, K; Song, MC

Author Full Names:
Zhao, Danyang; Jin, Yifei; Wang, Minjie; Li, Kai; Song, Mancang

Source:
2009 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION, VOLS 1-7, CONFERENCE PROCEEDINGS : 3155-3160 2009

Language:
English

Document Type:
Proceedings Paper

Author Keywords:
micro extrusion; micro scale effect; rheology characteristics; lumen structure; uniformity

KeyWords Plus:
RHEOLOGICAL BEHAVIOR; CHANNELS; FLUIDS

Abstract:
The uniformity of polymer melt flow in micro extrusion die determines the quality of products directly. It is the base of extrusion die design. According to rheology testing theory and with the help of capillary rheometer, the reasonable extrusion parameters have been achieved. The comparative micro scale viscosity model is built based on Kelvin-Voigt constitutive equation and the wall slip model is built based on Navier slip law. The extrusion of double-lumen is taken for example. By use of both numerical simulation and orthogonal experiment, the effects of main structure parameters on flow uniformity are studied. The conclusions show that shunting angle affects the uniformity most, then length of center stereotyping part, compression angle and compression ratio. Meanwhile, the best lumen structure parameters are determined. After that, double-lumen catheter die is fabricated by precision machining technology. The results of experiment validate the correctness and validity !
of numerical simulation for polymer micro extrusion flow.

Reprint Address:
Zhao, DY, Dalian Univ Technol, Key Lab Precis & Nontradit Machining Technol, Minist Educ, Dalian, Liaoning Prov, Peoples R China.

Research Institution addresses:
[Zhao, Danyang; Jin, Yifei; Wang, Minjie; Li, Kai; Song, Mancang] Dalian Univ Technol, Key Lab Precis & Nontradit Machining Technol, Minist Educ, Dalian, Liaoning Prov, Peoples R China

E-mail Address:
danyangz@163.com

Cited References:
CHEN CS, 2008, J EUROPEAN POLYM, V43, P1891.
CHEN SC, 2005, INT COMMUN HEAT MASS, V32, P501, DOI 10.1016/j.icheatmasstransfer.2004.07.004.
CHIEN RD, 2005, J MICROMECH MICROENG, V15, P1389, DOI 10.1088/0960-1317/15/8/003.
ERINGEN AC, 1995, INT J ENG SCI, V33, P2297.
GRANICK S, 2003, NAT MATER, V2, P221.
MUNSTEDT H, 2000, J RHEOL, V44, P413.
THOMPSON PA, 1997, NATURE, V389, P360.

Cited Reference Count:
7

Times Cited:
0

Publisher:
IEEE; 345 E 47TH ST, NEW YORK, NY 10017 USA

IDS Number:
BPW54

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