{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/208be7563b587190c24a78304dab29287/mathematik", "tags" : [ "Discrete","Dynamic","Finite","Fracture","Moving-mesh","Two-phase","algorithm","am","aperture","flow","fracture","from:brittalenz","ians","in","matrix","media","methods","models","porous","propagation","volume" ], "intraHash" : "08be7563b587190c24a78304dab29287", "interHash" : "1ef19dc47df248ebcee76f8655d00172", "label" : "A finite-volume moving-mesh method for two-phase flow in\r\nfracturing porous media", "user" : "mathematik", "description" : "", "date" : "2022-02-23 10:11:48", "changeDate" : "2022-04-11 06:45:24", "count" : 4, "pub-type": "article", "journal": "J. Comput. Phys.", "year": "2022", "url": "https://www.sciencedirect.com/science/article/pii/S0021999122000936", "author": [ "Samuel Burbulla","Christian Rohde" ], "authors": [ {"first" : "Samuel", "last" : "Burbulla"}, {"first" : "Christian", "last" : "Rohde"} ], "pages": "111031","abstract": "Multiphase flow in fractured porous media can be described\r\nby discrete fracture matrix models that represent the fractures as\r\ndimensionally reduced manifolds embedded in the bulk porous medium.\r\nGeneralizing earlier work on this approach we focus on immiscible\r\ntwo-phase flow in time-dependent fracture geometries, i.e., the fracture\r\nitself and the aperture of the fractures might evolve in time. For\r\ndynamic fracture geometries of that kind, neglecting capillary forces,\r\nwe deduce by transversal averaging of a full dimensional description a\r\ndimensionally reduced model that governs the geometric evolution and the\r\nflow dynamics. The core computational contribution is a\r\nmixed-dimensional finite-volume discretization based on a conforming\r\nmoving-mesh ansatz. This finite-volume moving-mesh (FVMM) algorithm is\r\ntracking the fractures' motions as a family of unions of facets of the\r\nmesh. Notably, the method permits arbitrary movement of facets of the\r\ntriangulation while keeping the mass conservation constraint. In a\r\nseries of numerical examples we investigate the modeling error of the\r\nreduced model as it compares to the original full dimensional model.\r\nMoreover, we show the performance of the finite-volume moving-mesh\r\nalgorithm for the complex wave pattern that is induced by the\r\ninteraction of saturation fronts and evolving fractures.", "doi" : "https://doi.org/10.1016/j.jcp.2022.111031", "bibtexKey": "burbulla2022finitevolume" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/242d1b78569ecd89f80f0f48af825ce75/mathematik", "tags" : [ "Conservation","capillarity,","discontinuous","dynamic","flow","flux","from:mhartmann","function,","ians","in","law,","limit,","media.","porous","singular","two-phase","vorlaeufig" ], "intraHash" : "42d1b78569ecd89f80f0f48af825ce75", "interHash" : "dfd390454fe4506ee81abb066cb2a4d4", "label" : "On the singular limit of a two-phase flow equation with heterogeneities\n\tand dynamic capillary pressure", "user" : "mathematik", "description" : "", "date" : "2018-07-20 10:54:26", "changeDate" : "2019-12-18 14:37:55", "count" : 2, "pub-type": "article", "journal": "ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift\n\tfür Angewandte Mathematik und Mechanik","publisher":"WILEY-VCH Verlag", "year": "2013", "url": "http://dx.doi.org/10.1002/zamm.201200141", "author": [ "F. Kissling","K.H. Karlsen" ], "authors": [ {"first" : "F.", "last" : "Kissling"}, {"first" : "K.H.", "last" : "Karlsen"} ], "pages": "n/a--n/a","abstract": "We consider conservation laws with spatially discontinuous flux that\n\tare perturbed by diffusion and dispersion terms. These equations\n\tarise in a theory of two-phase flow in porous media that includes\n\trate-dependent (dynamic) capillary pressure and spatial heterogeneities.\n\tWe investigate the singular limit as the diffusion and dispersion\n\tparameters tend to zero, showing strong convergence towards a weak\n\tsolution of the limit conservation law.", "issn" : "1521-4001", "doi" : "10.1002/zamm.201200141", "bibtexKey": "kissling2013singular" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/27e8bb871959ae6710fc36f435f60470c/mhartmann", "tags" : [ "compressible","flow;","ghost-fluid","heat","interface","latent","method;","phase","resolution;","sharp","surface","tension;","transition;","two-phase","vorlaeufig" ], "intraHash" : "7e8bb871959ae6710fc36f435f60470c", "interHash" : "1db17d28fd524bfc25df47ed16286487", "label" : "A sharp interface method for compressible liquid-vapor flow with\n\tphase transition and surface tension", "user" : "mhartmann", "description" : "", "date" : "2018-07-20 10:54:15", "changeDate" : "2018-07-20 08:54:15", "count" : 10, "pub-type": "article", "journal": "J. Comput. Phys.", "year": "2017", "url": "http://www.sciencedirect.com/science/article/pii/S0021999117300943", "author": [ "Stefan Fechter","Claus-Dieter Munz","Christian Rohde","Christoph Zeiler" ], "authors": [ {"first" : "Stefan", "last" : "Fechter"}, {"first" : "Claus-Dieter", "last" : "Munz"}, {"first" : "Christian", "last" : "Rohde"}, {"first" : "Christoph", "last" : "Zeiler"} ], "volume": "336","pages": "347-374","abstract": "The numerical approximation of non-isothermal liquid-vapor flow within\n\tthe compressible regime is a difficult task because complex physical\n\teffects at the phase interfaces can govern the global flow behavior.\n\tWe present a sharp interface approach which treats the interface\n\tas a shock-wave like discontinuity. Any mixing of fluid phases is\n\tavoided by using the flow solver in the bulk regions only, and a\n\tghost-fluid approach close to the interface. The coupling states\n\tfor the numerical solution in the bulk regions are determined by\n\tthe solution of local multi-phase Riemann problems across the interface.\n\tThe Riemann solution accounts for the relevant physics by enforcing\n\tappropriate jump conditions at the phase boundary. A wide variety\n\tof interface effects can be handled in a thermodynamically consistent\n\tway. This includes surface tension or mass/energy transfer by phase\n\ttransition. Moreover, the local normal speed of the interface, which\n\tis needed to calculate the time evolution of the interface, is given\n\tby the Riemann solution. The interface tracking itself is based on\n\ta level-set method. The focus in this paper is the description of\n\tthe multi-phase Riemann solver and its usage within the sharp interface\n\tapproach. One-dimensional problems are selected to validate the approach.\n\tFinally, the three-dimensional simulation of a wobbling droplet and\n\ta shock droplet interaction in two dimensions are shown. In both\n\tproblems phase transition and surface tension determine the global\n\tbulk behavior.", "owner" : "seusdd", "doi" : "http://dx.doi.org/10.1016/j.jcp.2017.02.001", "bibtexKey": "fechter2017sharp" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/242d1b78569ecd89f80f0f48af825ce75/mhartmann", "tags" : [ "Conservation","capillarity,","discontinuous","dynamic","flow","flux","function,","in","law,","limit,","media.","porous","singular","two-phase","vorlaeufig" ], "intraHash" : "42d1b78569ecd89f80f0f48af825ce75", "interHash" : "dfd390454fe4506ee81abb066cb2a4d4", "label" : "On the singular limit of a two-phase flow equation with heterogeneities\n\tand dynamic capillary pressure", "user" : "mhartmann", "description" : "", "date" : "2018-07-20 10:54:15", "changeDate" : "2018-07-20 08:54:15", "count" : 2, "pub-type": "article", "journal": "ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift\n\tfür Angewandte Mathematik und Mechanik","publisher":"WILEY-VCH Verlag", "year": "2013", "url": "http://dx.doi.org/10.1002/zamm.201200141", "author": [ "F. Kissling","K.H. Karlsen" ], "authors": [ {"first" : "F.", "last" : "Kissling"}, {"first" : "K.H.", "last" : "Karlsen"} ], "pages": "n/a--n/a","abstract": "We consider conservation laws with spatially discontinuous flux that\n\tare perturbed by diffusion and dispersion terms. These equations\n\tarise in a theory of two-phase flow in porous media that includes\n\trate-dependent (dynamic) capillary pressure and spatial heterogeneities.\n\tWe investigate the singular limit as the diffusion and dispersion\n\tparameters tend to zero, showing strong convergence towards a weak\n\tsolution of the limit conservation law.", "issn" : "1521-4001", "doi" : "10.1002/zamm.201200141", "bibtexKey": "kissling2013singular" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2ee308aa4b4d43c42ad9845f723ac516f/siemannherzberg", "tags" : [ "Hydroxylation;","Two-phase","biotransformation}","myown","{Alkane;" ], "intraHash" : "ee308aa4b4d43c42ad9845f723ac516f", "interHash" : "79b6641fe97d8547e0bdf5dff073f76f", "label" : "Production of 1-Octanol from n-Octane by Pseudomonas putida KT2440", "user" : "siemannherzberg", "description" : "", "date" : "2018-01-25 13:38:08", "changeDate" : "2018-01-25 12:38:18", "count" : 2, "pub-type": "article", "journal": "CHEMIE INGENIEUR TECHNIK","publisher":"WILEY-V C H VERLAG GMBH","address":"BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY", "year": "{2013}", "url": "https://doi.org/10.1002/cite.201200178", "author": [ "Tobias Vallon","Matthias Glemser","Sumire Honda Malca","Daniel Scheps","Joachim Schmid","Martin Siemann-Herzberg","Bernhard Hauer","Ralf Takors" ], "authors": [ {"first" : "Tobias", "last" : "Vallon"}, {"first" : "Matthias", "last" : "Glemser"}, {"first" : "Sumire Honda", "last" : "Malca"}, {"first" : "Daniel", "last" : "Scheps"}, {"first" : "Joachim", "last" : "Schmid"}, {"first" : "Martin", "last" : "Siemann-Herzberg"}, {"first" : "Bernhard", "last" : "Hauer"}, {"first" : "Ralf", "last" : "Takors"} ], "volume": "85","number": "6","pages": "841-848","abstract": "A two-phase biotransformation process for selective hydroxylation of\n n-octane to 1-octanol via Pseudomonas putida KT2440 harboring\n heterologously expressed P450 monooxygenase from Mycobacterium marinum\n is presented. Maximum cell-specific conversion rates of\n 12.7mg(octanol)g(CDW)h(-1) were observed not only in shaking flasks but\n also in 3.7-L-bioreactor studies. The bioreactor experiments were\n performed avoiding explosive gas mixtures by lowering volumetric power\n input, aeration rates and substrate concentrations. Based on a\n stoichiometric network of P. putida KT2440 topological studies were\n carried out. As a conclusion, potential limitations of NAD(P)H and/or\n ATP supply at production conditions can be excluded. Hence, the great\n potential of the host for further increasing conversion is outlined.", "issn" : "0009-286X", "funding-acknowledgement" : "German ministry of education and research; company BASF SE", "research-areas" : "Engineering", "doc-delivery-number" : "151BC", "usage-count-since-2013" : "24", "affiliation" : "Vallon, T (Reprint Author), Univ Stuttgart, Inst Biochem Engn, Allmandring 31, D-70569 Stuttgart, Germany.\n Vallon, Tobias; Glemser, Matthias; Siemann-Herzberg, Martin; Takors, Ralf, Univ Stuttgart, Inst Biochem Engn, D-70569 Stuttgart, Germany.\n Malca, Sumire Honda; Scheps, Daniel; Hauer, Bernhard, Univ Stuttgart, Inst Tech Biochem, D-70569 Stuttgart, Germany.\n Schmid, Joachim, Insilico Biotechnol AG, D-70563 Stuttgart, Germany.", "web-of-science-categories" : "Engineering, Chemical", "journal-iso" : "Chem. Ing. Tech.", "da" : "2018-01-25", "author-email" : "takors@ibvt.uni-stuttgart.de", "keywords-plus" : "ESCHERICHIA-COLI; ORGANIC-SOLVENTS; FUNCTIONAL EXPRESSION; ALKANE\n HYDROXYLASES; 2-LIQUID PHASE; CYTOCHROME-P450; CYP153A6; OXIDATION;\n ALCOHOLS; BACTERIA", "number-of-cited-references" : "31", "language" : "English", "funding-text" : "This study was supported by the German ministry of education and\n research and the company BASF SE. We thank Dr. Michael Breuer (BASF SE,\n Ludwigshafen, Germany) for supervising and coordinating the project\n consortium.", "unique-id" : "ISI:000319434600007", "usage-count-last-180-days" : "3", "times-cited" : "7", "doi" : "10.1002/cite.201200178", "bibtexKey": "ISI:000319434600007" } ] }