Three-dimensional Vortex Structures on Heated Micro-lattice in a Gas

Jebauer, Steffen; Czerwinska, Justyna (2014). Three-dimensional Vortex Structures on Heated Micro-lattice in a Gas. International journal of heat and mass transfer, 70, pp. 827-834. Elsevier 10.1016/j.ijheatmasstransfer.2013.11.056

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This paper addresses the microscale heat transfer problem from heated lattice to the gas. A micro-device for enhanced heat transfer is presented and numerically investigated. Thermal creep induces 3-D vortex structures in the vicinity of the lattice. The gas flow is in the slip flow regime (Knudsen number Kn⩽0.1Kn⩽0.1). The simulations are performed using slip flow Navier–Stokes equations with boundary condition formulations proposed by Maxwell and Smoluchowski. In this study the wire thicknesses and distances of the heated lattice are varied. The surface geometrical properties alter significantly heat flux through the surface.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Artificial Kidney Research

UniBE Contributor:

Czerwinska, Justyna

Subjects:

600 Technology > 620 Engineering

ISSN:

0017-9310

Publisher:

Elsevier

Language:

English

Submitter:

Justyna Czerwinska

Date Deposited:

06 Oct 2014 13:59

Last Modified:

20 Dec 2014 03:47

Publisher DOI:

10.1016/j.ijheatmasstransfer.2013.11.056

Uncontrolled Keywords:

Gas flow, Simulations, Secondary slip induced flow structures, Heated micro-lattice

BORIS DOI:

10.7892/boris.52096

URI:

https://boris.unibe.ch/id/eprint/52096

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