Model coupling and complex structures - Investigating transfer fluxes induced by turbulent free flow and affected by multiphase processes in porous media

Description: Das Projekt "Model coupling and complex structures - Investigating transfer fluxes induced by turbulent free flow and affected by multiphase processes in porous media" wird vom Umweltbundesamt gefördert und von Universität Stuttgart, Institut für Wasser- und Umweltsystemmodellierung durchgeführt. Flow and transport processes in domains composed of a porous medium and an adjacent free-flow region appear in a wide range of industrial, medical and environmental applications. Our focus is on evaporation from unsaturated soils under influence of a turbulent free flow. The modeling of such coupled systems is a challenging task especially at the interface of the two domains. In preliminary work a REV-scale model has been developed, which couples the Navier-Stokes equation for the free flow with the Darcy equation for the porous-medium flow. It is possible to simulate the evaporation processes for non-isothermal, laminar conditions and a multiphase, multicomponent flow. However, there is a discrepancy between the simulated evaporation rates and rates which have been measured in lab experiments. Therefore the model will be extended with RANS turbulence models. The vision is to develop a model which can reproduce the complex interaction between the two domains and predict the exchange fluxes. This is achieved with a numerical stable description for the turbulent free flow and by gaining inside into the complex processes at the interface. Different scenarios will be analyzed with respect to the required model complexity aiming at a 'intelligent interface' description and an improved modeling on the field scale.

Types:

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Stuttgart ? Tierhaltungsanlage ? Aufbereitungstechnik ? Szenario ? Verdunstung ? Umweltmedizin ? Modellierung ? Wertermittlung ? Messung ? Arbeit ? Turbulenz ? Gebiet ? AUSTAUSCHEN ? BESCHREIBUNG ? EXPERIMENT ? FREI ? Fluss [Bewegung] ? GEKOPPELT ? GEMISCHT ? Laminarströmung ? Mittel ? Muskelarbeit ? PROZESSBEDINGT ? SCHNITTSTELLE ? Stall ? UNSTIMMIGKEIT ? UNTER ? VERHAELTNIS ? VERSCHIEBUNG ? Verwertung ? Wechselwirkung ?

Region: Baden-Württemberg

Bounding box: 9° .. 9° x 48.5° .. 48.5°

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• Colorado School of Mines (Mitwirkende)
• Eidgenössische Technische Hochschule Zürich (Mitwirkende)
• Forschungszentrum Jülich (Mitwirkende)
• Umweltbundesamt (Bereitsteller*in)
• Universität Stuttgart, Institut für Wasser- und Umweltsystemmodellierung (Betreiber*in)
• Universität Stuttgart, International Research Training Group NUPUS (Bereitsteller*in)

Time ranges: 2013-04-01 - 2016-03-31

Alternatives

• Language: Englisch/English https://ufordat.uba.de/

Status

Aktiv

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