--- _id: '11934' abstract: - lang: eng text: The application of hydrogen in order to store energy and as a vehicle fuel requires efficient and effective storage technologies. An alternative solution to cryogenic and high pressure tanks is the use of porous material and physisorption (carbons, metal organic frameworks) or chemisorption (hydrides) in the tank. Due to the heat of sorption the temperature and its distribution in the tank might vary significantly during charging and discharging, affecting the storage capacity. The flow of the hydrogen in the tank is described by the equation of mass conservation, the Navier-Stokes equations and the equation of energy conservation as implemented in a CFD code. In the conservation equation additional terms are implemented in order to account for the amount of hydrogen involved in the sorption and the corresponding heat of sorption. These result from the mass and energy balance for the hydrogen in a finite volume whereat the equilibrium is described by an appropriate sorption isotherm. The use of data driven models is often computationally more advantageous then physical models. Based on the physical adsorption model a data driven model is derived using different machine learning techniques. This model is implemented as source terms in the governing equations, leading to a computationally more advantageous formulation. Thus the distribution of temperature and concentration during charging and discharging of the tanks is computed and limiting phenomena are identified. author: - first_name: Georg Heinrich full_name: Klepp, Georg Heinrich id: '49011' last_name: Klepp - first_name: Markus full_name: Filippi, Markus id: '61656' last_name: Filippi - first_name: Guido full_name: Langer, Guido id: '71642' last_name: Langer citation: ama: Klepp GH, Filippi M, Langer G. Charging and Discharging of Hydrogen Sorption Tanks. (Benin AC, Bennacer R, Mohamad AA, Ocłoń P, Suh SH, Taler J, eds.). Springer; 2024:480-488. doi:10.1007/978-3-031-67241-5_43 apa: 'Klepp, G. H., Filippi, M., & Langer, G. (2024). Charging and Discharging of Hydrogen Sorption Tanks. In A. C. Benin, R. Bennacer, A. A. Mohamad, P. Ocłoń, S.-H. Suh, & J. Taler (Eds.),   Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 (pp. 480–488). Springer. https://doi.org/10.1007/978-3-031-67241-5_43' bjps: Klepp GH, Filippi M and Langer G (2024) Charging and Discharging of Hydrogen Sorption Tanks, Benin AC et al. (eds). Springer. chicago: 'Klepp, Georg Heinrich, Markus Filippi, and Guido Langer. Charging and Discharging of Hydrogen Sorption Tanks. Edited by Ali Cemal Benin, Rachid Bennacer, Abdulmajeed A. Mohamad, Paweł Ocłoń, Sang-Ho Suh, and Jan Taler.   Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 . Lecture Notes in Mechanical Engineering ((LNME)). Springer, 2024. https://doi.org/10.1007/978-3-031-67241-5_43.' chicago-de: 'Klepp, Georg Heinrich, Markus Filippi und Guido Langer. 2024. Charging and Discharging of Hydrogen Sorption Tanks. Hg. von Ali Cemal Benin, Rachid Bennacer, Abdulmajeed A. Mohamad, Paweł Ocłoń, Sang-Ho Suh, und Jan Taler.   Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 . Lecture Notes in Mechanical Engineering ((LNME)). Springer. doi:10.1007/978-3-031-67241-5_43, .' din1505-2-1: 'Klepp, Georg Heinrich ; Filippi, Markus ; Langer, Guido ; Benin, A. C. ; Bennacer, R. ; Mohamad, A. A. ; Ocłoń, P. ; Suh, S.-H. ; Taler, J. (Hrsg.): Charging and Discharging of Hydrogen Sorption Tanks, Lecture Notes in Mechanical Engineering ((LNME)) : Springer, 2024' havard: G.H. Klepp, M. Filippi, G. Langer, Charging and Discharging of Hydrogen Sorption Tanks, Springer, 2024. ieee: 'G. H. Klepp, M. Filippi, and G. Langer, Charging and Discharging of Hydrogen Sorption Tanks. Springer, 2024, pp. 480–488. doi: 10.1007/978-3-031-67241-5_43.' mla: 'Klepp, Georg Heinrich, et al. “Charging and Discharging of Hydrogen Sorption Tanks.”   Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 , edited by Ali Cemal Benin et al., Springer, 2024, pp. 480–88, https://doi.org/10.1007/978-3-031-67241-5_43.' short: G.H. Klepp, M. Filippi, G. Langer, Charging and Discharging of Hydrogen Sorption Tanks, Springer, 2024. ufg: 'Klepp, Georg Heinrich/Filippi, Markus/Langer, Guido: Charging and Discharging of Hydrogen Sorption Tanks, hg. von Benin, Ali Cemal u. a., o. O. 2024 (Lecture Notes in Mechanical Engineering ((LNME))).' van: 'Klepp GH, Filippi M, Langer G. Charging and Discharging of Hydrogen Sorption Tanks. Benin AC, Bennacer R, Mohamad AA, Ocłoń P, Suh SH, Taler J, editors.   Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 . Springer; 2024. (Lecture Notes in Mechanical Engineering ((LNME))).' conference: end_date: 2023-09-08 location: Düsseldorf name: 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023) start_date: 2023-09-04 date_created: 2024-09-24T09:16:51Z date_updated: 2024-09-30T06:51:54Z department: - _id: DEP6020 - _id: DEP6017 doi: 10.1007/978-3-031-67241-5_43 editor: - first_name: Ali Cemal full_name: Benin, Ali Cemal last_name: Benin - first_name: 'Rachid ' full_name: 'Bennacer, Rachid ' last_name: Bennacer - first_name: 'Abdulmajeed A. ' full_name: 'Mohamad, Abdulmajeed A. ' last_name: Mohamad - first_name: 'Paweł ' full_name: 'Ocłoń, Paweł ' last_name: Ocłoń - first_name: 'Sang-Ho ' full_name: 'Suh, Sang-Ho ' last_name: Suh - first_name: 'Jan ' full_name: 'Taler, Jan ' last_name: Taler language: - iso: eng page: 480 - 488 publication: "\t Advances in Computational Heat and Mass Transfer : Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany, Volume 1 " publication_identifier: eisbn: - 978-3-031-67241-5 unknown: - 978-3-031-67240-8 publication_status: published publisher: Springer quality_controlled: '1' series_title: Lecture Notes in Mechanical Engineering ((LNME)) status: public title: Charging and Discharging of Hydrogen Sorption Tanks type: conference_editor_article user_id: '83781' year: '2024' ... --- _id: '9256' abstract: - lang: eng text: "In order to increase mobility in rural areas and to support public transport, an autonomous monorail vehicle (MonoCab [1]) is developed, which is able to use old unused railroad tracks. A narrow design makes it possible for two vehicles to pass each other on one track in two-way traffic. A fully automated driving mode allows the vehicle to be ordered on demand via app.\r\nDue to the design on only two wheels, monorail vehicles must be able to react quickly to environmental influences, such as wind, in order to prevent overturning. To avoid critical tilt angles during travel and ensure ride comfort, gyroscopic stabilizers and linear masses are used to hold the vehicle in the desired position in real time.\r\n\r\nIn this study, the vehicle behavior is investigated by determining flow coefficients when crosswind occurs. For this purpose, a guideline from the German railroad standard DIN EN 14067-6 is applied. This standard specifies a flow around the vehicle in 5-degree increments from 0 degrees to 50 degrees, followed by 10-degree increments to 90 degrees, to simulate crosswinds from different directions. The flow vector is calculated from the vehicle speed and the wind speed, taking into account the wind angle. In order to better detect occurring instabilities at the vehicle geometry, the simulation series is calculated with the transient solver pimpleFoam. These simulations are used to generate characteristic curves using calculated moment coefficients.\r\n\r\nIn addition, the pressure surge is examined, which occurs when two vehicles pass each other in oncoming traffic. This is achieved using the dynamic mesh solver overPimpleDyMFoam for overlaid meshes. Two opposing vehicles with projected track gauge spacing are defined with a linear motion function of maximum vehicle speed magnitude. During the passing of both vehicles at maximum speed, the forces and moments around the point of contact on the rail are recorded." author: - first_name: Guido full_name: Langer, Guido id: '71642' last_name: Langer - first_name: Georg Heinrich full_name: Klepp, Georg Heinrich id: '49011' last_name: Klepp citation: ama: Langer G, Klepp GH. CFD Analysis of a Monorail Vehicle under the Influence of Crosswind and Oncoming Traffic.; 2022. apa: Langer, G., & Klepp, G. H. (2022). CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic. In 10th OpenFOAM Conference. 10th OpenFOAM Conference, online. bjps: Langer G and Klepp GH (2022) CFD Analysis of a Monorail Vehicle under the Influence of Crosswind and Oncoming Traffic. . chicago: Langer, Guido, and Georg Heinrich Klepp. CFD Analysis of a Monorail Vehicle under the Influence of Crosswind and Oncoming Traffic. 10th OpenFOAM Conference, 2022. chicago-de: Langer, Guido und Georg Heinrich Klepp. 2022. CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic. 10th OpenFOAM Conference. din1505-2-1: 'Langer, Guido ; Klepp, Georg Heinrich: CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic, 2022' havard: G. Langer, G.H. Klepp, CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic, 2022. ieee: G. Langer and G. H. Klepp, CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic. 2022. mla: Langer, Guido, and Georg Heinrich Klepp. “CFD Analysis of a Monorail Vehicle under the Influence of Crosswind and Oncoming Traffic.” 10th OpenFOAM Conference, 2022. short: G. Langer, G.H. Klepp, CFD Analysis of a Monorail Vehicle under the Influence of Crosswind and Oncoming Traffic, 2022. ufg: 'Langer, Guido/Klepp, Georg Heinrich: CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic, o. O. 2022.' van: Langer G, Klepp GH. CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic. 10th OpenFOAM Conference. 2022. conference: end_date: 2022-11-08 location: online name: 10th OpenFOAM Conference start_date: 2022-11-08 date_created: 2022-12-20T13:06:28Z date_updated: 2024-08-05T08:24:46Z ddc: - '620' department: - _id: DEP6010 - _id: DEP6017 - _id: DEP6020 language: - iso: eng main_file_link: - open_access: '1' url: https://www.esi-group.com/sites/default/files/resource/other/3282/32_Abstract_OpenFOAM_2022_Langer_OWL.pdf oa: '1' publication: 10th OpenFOAM Conference publication_status: published status: public title: CFD analysis of a monorail vehicle under the influence of crosswind and oncoming traffic type: conference_speech user_id: '83781' year: '2022' ... --- _id: '8098' author: - first_name: Georg Heinrich full_name: Klepp, Georg Heinrich id: '49011' last_name: Klepp - first_name: Guido full_name: Langer, Guido id: '71642' last_name: Langer citation: ama: Klepp GH, Langer G. Monorail Flow Patterns and Vehicle Drag.; 2021. apa: Klepp, G. H., & Langer, G. (2021). Monorail Flow Patterns and Vehicle Drag. Presented at the Aerovehicles 4, Berlin. bjps: Klepp GH and Langer G (2021) Monorail Flow Patterns and Vehicle Drag. . chicago: Klepp, Georg Heinrich, and Guido Langer. Monorail Flow Patterns and Vehicle Drag, 2021. chicago-de: Klepp, Georg Heinrich und Guido Langer. 2021. Monorail Flow Patterns and Vehicle Drag. din1505-2-1: 'Klepp, Georg Heinrich ; Langer, Guido: Monorail Flow Patterns and Vehicle Drag, 2021' havard: G.H. Klepp, G. Langer, Monorail Flow Patterns and Vehicle Drag, 2021. ieee: G. H. Klepp and G. Langer, Monorail Flow Patterns and Vehicle Drag. 2021. mla: Klepp, Georg Heinrich, and Guido Langer. Monorail Flow Patterns and Vehicle Drag. 2021. short: G.H. Klepp, G. Langer, Monorail Flow Patterns and Vehicle Drag, 2021. ufg: 'Klepp, Georg Heinrich/Langer, Guido (2021): Monorail Flow Patterns and Vehicle Drag.' van: Klepp GH, Langer G. Monorail Flow Patterns and Vehicle Drag. 2021. conference: end_date: 2021-08-25 location: Berlin name: Aerovehicles 4 start_date: 2021-08-23 date_created: 2022-05-10T17:29:53Z date_updated: 2023-03-15T13:50:13Z department: - _id: DEP6010 - _id: DEP6017 - _id: DEP6020 language: - iso: eng quality_controlled: '1' status: public title: Monorail Flow Patterns and Vehicle Drag type: conference_speech user_id: '59503' year: 2021 ... --- _id: '8100' author: - first_name: Georg Heinrich full_name: Klepp, Georg Heinrich id: '49011' last_name: Klepp - first_name: Markus full_name: Filippi, Markus id: '61656' last_name: Filippi - first_name: Guido full_name: Langer, Guido id: '71642' last_name: Langer citation: ama: Klepp GH, Filippi M, Langer G. Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications.; 2021. apa: Klepp, G. H., Filippi, M., & Langer, G. (2021). Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. Presented at the NAFEMS World Congress 2021, online. bjps: Klepp GH, Filippi M and Langer G (2021) Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. . chicago: Klepp, Georg Heinrich, Markus Filippi, and Guido Langer. Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications, 2021. chicago-de: Klepp, Georg Heinrich, Markus Filippi und Guido Langer. 2021. Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. din1505-2-1: 'Klepp, Georg Heinrich ; Filippi, Markus ; Langer, Guido: Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications, 2021' havard: G.H. Klepp, M. Filippi, G. Langer, Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications, 2021. ieee: G. H. Klepp, M. Filippi, and G. Langer, Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. 2021. mla: Klepp, Georg Heinrich, et al. Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. 2021. short: G.H. Klepp, M. Filippi, G. Langer, Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications, 2021. ufg: 'Klepp, Georg Heinrich et. al. (2021): Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications.' van: Klepp GH, Filippi M, Langer G. Impinging Jet Flow and  Heat Transfer for  Industrial Drying Applications. 2021. conference: end_date: 2021-10-29 location: online name: NAFEMS World Congress 2021 start_date: 2021-10-25 date_created: 2022-05-10T17:43:44Z date_updated: 2023-03-15T13:50:13Z department: - _id: DEP6010 - _id: DEP6017 language: - iso: eng quality_controlled: '1' status: public title: Impinging Jet Flow and Heat Transfer for Industrial Drying Applications type: conference_speech user_id: '79260' year: 2021 ...