--- _id: '48580' abstract: - lang: eng text: "Abstract\r\n Sandwich packings represent new separation column internals, with a potential to intensify mass transfer. They comprise two conventional structured packings with different specific geometrical surface areas. In this work, the complex fluid dynamics in sandwich packings is modeled using a novel approach based on a one-dimensional, steady momentum balance of the liquid and gas phases. The interactions between the three present phases (gas, liquid, and solid) are considered by closures incorporated into the momentum balance. The formulation of these closures is derived from two fluid-dynamic analogies for the film and froth flow patterns. The adjustable parameters in the closures are regressed for the film flow using dry pressure drop measurements and liquid hold-up data in trickle flow conditions. For the froth flow, the tuning parameters are fitted to overall pressure drop measurements and local liquid hold-up data acquired from ultra-fast X-ray tomography (UFXCT). The model predicts liquid hold-up and pressure drop data with an average relative deviation of 16.4 % and 19 %, respectively. Compared to previous fluid dynamic models for sandwich packings, the number of adjustable parameters could be reduced while maintaining comparable accuracy." author: - first_name: Patrick full_name: Franke, Patrick id: '93922' last_name: Franke - first_name: Iman full_name: Shabanilemraski, Iman last_name: Shabanilemraski - first_name: Markus full_name: Schubert, Markus last_name: Schubert - first_name: Uwe full_name: Hampel, Uwe last_name: Hampel - first_name: Eugeny Y. full_name: Kenig, Eugeny Y. id: '665' last_name: Kenig citation: ama: Franke P, Shabanilemraski I, Schubert M, Hampel U, Kenig EY. A new approach to model the fluid dynamics in sandwich packings. Chemical Product and Process Modeling. 2023;0(0). doi:10.1515/cppm-2023-0054 apa: Franke, P., Shabanilemraski, I., Schubert, M., Hampel, U., & Kenig, E. Y. (2023). A new approach to model the fluid dynamics in sandwich packings. Chemical Product and Process Modeling, 0(0). https://doi.org/10.1515/cppm-2023-0054 bibtex: '@article{Franke_Shabanilemraski_Schubert_Hampel_Kenig_2023, title={A new approach to model the fluid dynamics in sandwich packings}, volume={0}, DOI={10.1515/cppm-2023-0054}, number={0}, journal={Chemical Product and Process Modeling}, publisher={Walter de Gruyter GmbH}, author={Franke, Patrick and Shabanilemraski, Iman and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}, year={2023} }' chicago: Franke, Patrick, Iman Shabanilemraski, Markus Schubert, Uwe Hampel, and Eugeny Y. Kenig. “A New Approach to Model the Fluid Dynamics in Sandwich Packings.” Chemical Product and Process Modeling 0, no. 0 (2023). https://doi.org/10.1515/cppm-2023-0054. ieee: 'P. Franke, I. Shabanilemraski, M. Schubert, U. Hampel, and E. Y. Kenig, “A new approach to model the fluid dynamics in sandwich packings,” Chemical Product and Process Modeling, vol. 0, no. 0, 2023, doi: 10.1515/cppm-2023-0054.' mla: Franke, Patrick, et al. “A New Approach to Model the Fluid Dynamics in Sandwich Packings.” Chemical Product and Process Modeling, vol. 0, no. 0, Walter de Gruyter GmbH, 2023, doi:10.1515/cppm-2023-0054. short: P. Franke, I. Shabanilemraski, M. Schubert, U. Hampel, E.Y. Kenig, Chemical Product and Process Modeling 0 (2023). date_created: 2023-10-31T18:43:20Z date_updated: 2025-02-07T11:29:15Z doi: 10.1515/cppm-2023-0054 issue: '0' keyword: - Modeling and Simulation - General Chemical Engineering language: - iso: eng publication: Chemical Product and Process Modeling publication_identifier: issn: - 1934-2659 publication_status: published publisher: Walter de Gruyter GmbH quality_controlled: '1' status: public title: A new approach to model the fluid dynamics in sandwich packings type: journal_article user_id: '93922' volume: '0' year: '2023' ... --- _id: '23785' abstract: - lang: eng text: "Abstract\r\n In two-phase flows in which the Capillary number is low, errors in the computation of the surface tension force at the interface cause Front-Capturing methods such as Volume of Fluid (VOF) and Level-Set (LS) to develop interfacial spurious currents. To better solve low Capillary number flows, special treatment is required to reduce such spurious currents. Smoothing the phase indicator field to more accurately compute the curvature or adding interfacial artificial viscosity are techniques that can treat this problem. This study explores OpenFOAM, Fluent and StarCCM+ VOF solvers for the classical case of a static bubble/droplet immersed in a continuous aqueous phase, with the focus on the ability of these solvers to adequately reduce spurious currents. The results are expected to be helpful for practicing chemical engineers who use multiphase CFD solvers in their work." author: - first_name: Venkatesh full_name: Inguva, Venkatesh id: '75069' last_name: Inguva - first_name: Andreas full_name: Schulz, Andreas id: '63109' last_name: Schulz - first_name: Eugeny full_name: Kenig, Eugeny id: '665' last_name: Kenig citation: ama: 'Inguva V, Schulz A, Kenig E. On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet. Chemical Product and Process Modeling. 2022;17:121-135.' apa: 'Inguva, V., Schulz, A., & Kenig, E. (2022). On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet. Chemical Product and Process Modeling, 17, 121–135.' bibtex: '@article{Inguva_Schulz_Kenig_2022, title={On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet}, volume={17}, journal={Chemical Product and Process Modeling}, author={Inguva, Venkatesh and Schulz, Andreas and Kenig, Eugeny}, year={2022}, pages={121–135} }' chicago: 'Inguva, Venkatesh, Andreas Schulz, and Eugeny Kenig. “On Methods to Reduce Spurious Currents within VOF Solver Frameworks. Part 1: A Review of the Static Bubble/Droplet.” Chemical Product and Process Modeling 17 (2022): 121–35.' ieee: 'V. Inguva, A. Schulz, and E. Kenig, “On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet,” Chemical Product and Process Modeling, vol. 17, pp. 121–135, 2022.' mla: 'Inguva, Venkatesh, et al. “On Methods to Reduce Spurious Currents within VOF Solver Frameworks. Part 1: A Review of the Static Bubble/Droplet.” Chemical Product and Process Modeling, vol. 17, 2022, pp. 121–35.' short: V. Inguva, A. Schulz, E. Kenig, Chemical Product and Process Modeling 17 (2022) 121–135. date_created: 2021-09-06T09:59:46Z date_updated: 2023-04-28T10:38:34Z department: - _id: '9' - _id: '145' intvolume: ' 17' language: - iso: eng page: 121-135 publication: Chemical Product and Process Modeling publication_identifier: issn: - 1934-2659 - 2194-6159 publication_status: published quality_controlled: '1' status: public title: 'On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet' type: journal_article user_id: '665' volume: 17 year: '2022' ... --- _id: '24120' abstract: - lang: eng text: "Abstract\r\n In two-phase flows in which the Capillary number is low, errors in the computation of the surface tension force at the interface cause Front-Capturing methods such as Volume of Fluid (VOF) and Level-Set (LS) to develop interfacial spurious currents. To better solve low Capillary number flows, special treatment is required to reduce such spurious currents. Smoothing the phase indicator field to more accurately compute the curvature or adding interfacial artificial viscosity are techniques that can treat this problem. This study explores OpenFOAM, Fluent and StarCCM+ VOF solvers for the classical case of a static bubble/droplet immersed in a continuous aqueous phase, with the focus on the ability of these solvers to adequately reduce spurious currents. The results are expected to be helpful for practicing chemical engineers who use multiphase CFD solvers in their work." author: - first_name: Venkatesh full_name: Inguva, Venkatesh last_name: Inguva - first_name: Andreas full_name: Schulz, Andreas last_name: Schulz - first_name: Eugeny Y. full_name: Kenig, Eugeny Y. last_name: Kenig citation: ama: 'Inguva V, Schulz A, Kenig EY. On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet. Chemical Product and Process Modeling. Published online 2020. doi:10.1515/cppm-2020-0052' apa: 'Inguva, V., Schulz, A., & Kenig, E. Y. (2020). On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet. Chemical Product and Process Modeling. https://doi.org/10.1515/cppm-2020-0052' bibtex: '@article{Inguva_Schulz_Kenig_2020, title={On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet}, DOI={10.1515/cppm-2020-0052}, journal={Chemical Product and Process Modeling}, author={Inguva, Venkatesh and Schulz, Andreas and Kenig, Eugeny Y.}, year={2020} }' chicago: 'Inguva, Venkatesh, Andreas Schulz, and Eugeny Y. Kenig. “On Methods to Reduce Spurious Currents within VOF Solver Frameworks. Part 1: A Review of the Static Bubble/Droplet.” Chemical Product and Process Modeling, 2020. https://doi.org/10.1515/cppm-2020-0052.' ieee: 'V. Inguva, A. Schulz, and E. Y. Kenig, “On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet,” Chemical Product and Process Modeling, 2020, doi: 10.1515/cppm-2020-0052.' mla: 'Inguva, Venkatesh, et al. “On Methods to Reduce Spurious Currents within VOF Solver Frameworks. Part 1: A Review of the Static Bubble/Droplet.” Chemical Product and Process Modeling, 2020, doi:10.1515/cppm-2020-0052.' short: V. Inguva, A. Schulz, E.Y. Kenig, Chemical Product and Process Modeling (2020). date_created: 2021-09-10T07:53:00Z date_updated: 2022-01-06T06:56:07Z doi: 10.1515/cppm-2020-0052 language: - iso: eng publication: Chemical Product and Process Modeling publication_identifier: issn: - 1934-2659 - 2194-6159 publication_status: published status: public title: 'On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet' type: journal_article user_id: '75069' year: '2020' ...