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Dielectrophoretic force driven convection in annular geometry under Earth’s gravity

Abstract (Expand)

Context A radial temperature difference together with an inhomogeneous radial electric field gradient is applied to a dielectric fluid confined in a vertical cylindrical annulus inducing thermal … electro-hydrodynamic convection. Aims Identification of the stability of the flow and hence of the line of marginal stability separating stable laminar free (natural) convection from thermal electro-hydrodynamic convection, its flow structures, pattern formation and critical parameters. Methods Combination of different measurement techniques, namely the shadowgraph method and particle image velocimetry, as well as numerical simulation are used to qualify/quantify the flow. Results We identify the transition from stable laminar free convection to thermal electro-hydrodynamic convective flow in a wide range of Rayleigh number and electric potential. The line of marginal stability found confirms results from linear stability analysis. The flow after first transition forms a structure of axially aligned stationary columnar modes. We experimentally confirm critical parameters resulting from linear stability analysis and we show numerically an enhancement of heat transfer.

Authors: Torsten Seelig, Antoine Meyer, Philipp Gerstner, Martin Meier, Marcel Jongmanns, Martin Baumann, Vincent Heuveline, Christoph Egbers

Date Published: 1st Aug 2019

Publication Type: Journal

A time step reduction method for Multi-Period Optimal Power Flow problems

Abstract

Not specified

Authors: Nils Schween, Nico Meyer-Hübner, Philipp Gerstner, Vincent Heuveline

Date Published: 30th May 2019

Publication Type: Journal

Analysis of the Stationary Thermal-ElectroHydrodynamic Boussinesq Equations

Abstract

Not specified

Authors: Philipp Gerstner, Martin Baumann, Vincent Heuveline

Date Published: 14th Apr 2019

Publication Type: Journal

Extraction of Spatial-Temporal Features of Bus Loads in Electric Grids through Clustering in a Dynamic Model Space

Abstract

Not specified

Authors: Wei Zhang, Gang Mu, Chen Song, Gangui Yan, Vincent Heuveline

Date Published: 2019

Publication Type: Journal

The shared neoantigen landscape of MSI cancers reflects immunoediting during tumor evolution

Abstract

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Authors: Alexej Ballhausen, Moritz Jakob Przybilla, Michael Jendrusch, Saskia Haupt, Elisabeth Pfaffendorf, Markus Draxlbauer, Florian Seidler, Sonja Krausert, Aysel Ahadova, Martin Simon Kalteis, Daniel Heid, Johannes Gebert, Maria Bonsack, Sarah Schott, Hendrik Bläker, Toni Seppälä, Jukka-Pekka Mecklin, Sanne Ten Broeke, Maartje Nielsen, Vincent Heuveline, Julia Krzykalla, Axel Benner, Angelika Beate Riemer, Magnus von Knebel Doeberitz, Matthias Kloor

Date Published: 2019

Publication Type: Journal

A cationic near infrared fluorescent agent and ethyl-cinnamate tissue clearing protocol for vascular staining and imaging

Abstract

Not specified

Authors: Jiaguo Huang, Cinzia Brenna, Arif ul Maula Khan, Cristina Daniele, Rüdiger Rudolf, Vincent Heuveline, Norbert Gretz

Date Published: 2019

Publication Type: Journal

GOODE: A Gaussian Off-The-Shelf Ordinary Differential Equation Solver

Abstract

Not specified

Authors: David John, Vincent Heuveline, Michael Schober

Date Published: 2019

Publication Type: InProceedings

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