Numerical investigation of interfacial mass transfer in two phase flows using the VOF method

Autor: Furkan Özkan, Achim Wenka, Edgar Hansjosten, Peter Pfeifer, Bettina Kraushaar-Czarnetzki

Publikováno v: Engineering Applications of Computational Fluid Mechanics, Vol 10, Iss 1, Pp 100-110 (2016)

A mass transfer model is developed using the volume-of-fluid (VOF) method with a piecewise linear interface calculation (PLIC) scheme in ANSYS FLUENT for a free-rising bubble. The mass flow rate is defined via the interface by Fick's law and added in

Externí odkaz: https://doaj.org/article/723b85376a774b1db731b8dd7fa788a9

Custom-designed 3D-printed metallic fluid guiding elements for enhanced heat transfer at low pressure drop

Autor: Achim Wenka, Michael Klumpp, Andreas Hensel, Roland Dittmeyer, Walther Benzinger, Edgar Hansjosten

Publikováno v: Chemical Engineering and Processing - Process Intensification. 130:119-126

3D-printed inserts allowing for the tailored guiding of a fluid flow for enhanced heat transfer at low pressure drop are presented. The fluid guiding elements (FGE) introduced in this contribution are based on B-spline surfaces allowing for a dedicat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69dfaf4911814044294d23a7c104b55b
https://doi.org/10.1016/j.cep.2018.05.022

Experimental and numerical investigations on the effect of fracture geometry and fracture aperture distribution on flow and solute transport in natural fractures

Autor: Frieder Enzmann, Michael Trumm, Thorsten Schäfer, Eva Schill, Florian Huber, Dietmar Meinel, Achim Wenka, Madeleine Stoll

Publikováno v: Journal of contaminant hydrology. 221

The impact of fracture geometry and aperture distribution on fluid movement and on non-reactive solute transport was investigated experimentally and numerically in single fractures. For this purpose a hydrothermally altered and an unaltered granite d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::411f65b48d998b01bf0af05b37e32163
https://pubmed.ncbi.nlm.nih.gov/30712982

A Microfluidic Device for the Investigation of Rapid Gold Nanoparticle Formation in Continuous Turbulent Flow

Autor: Jan-Dierk Grunwaldt, Roland Dittmeyer, S. Heideker, A. Jahn, G. Hofmann, A. Urban, Sina Baier, Angela Ewinger, Achim Wenka, Ghazal Tofighi, Günter Rinke

Publikováno v: Journal of physics / Conference Series, 712 (1), Art. Nr.: 012072
Journal of physics / Conference series 712, 012072 (2016). doi:10.1088/1742-6596/712/1/012072
16th International Conference on X-ray Absorption Fine Structure, XAFS16, Karlsruhe, Germany, 2015-08-23-2015-08-28

16th International Conference on X-ray Absorption Fine Structure , XAFS16, Karlsruhe, Germany, 23 Aug 2015 - 28 Aug 2015; Journal of physics / Conference Series Conference Series 712, 012072 (2016). doi:10.1088/1742-6596/712/1/012072
A new setup

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1390add6f6ce56a90c676346631be8e

Kinetic modelling of the SO2-oxidation with Pt in a microstructured reactor

Autor: Roland Dittmeyer, Achim Wenka, Walther Benzinger

Publikováno v: Applied Catalysis A: General. 397:209-217

In terms of tons per day SO3 is one of the most important chemicals in the world. It is produced via the contact process in a gas phase catalytic oxidation reaction. The contact process consists of multiple catalyst beds, inter-stage cooling and an a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52631d6f4f03fef31fcbaf6d9b0e5aa8
https://doi.org/10.1016/j.apcata.2011.03.001