Research Project A-X3

Exchange Processes at the Soil-Atmosphere Interface: Modelling and Numerical Analysis


An understanding of the flow and transport processes occurring at the interface and between porous medium and turbulent free-flow domains is necessary in a wide range of industrial and environmental applications. The flow dynamics in each of these domains exhibit a strong coupling to the other, where the coupling often depends on characteristics of the interface. In order to evaluate these coupled processes, an understanding of the underlying flow concepts is imperative. In this work, the effects of turbulence, interface roughness, non-isothermal, and compositional flow dynamics are all investigated at the REV scale using coupled free-flow porous media flow models. The developed concepts are paired with results from experiments at multiple scales with various backgrounds.

Publications in Associated Project A-X3

  1. Heck, K., Coltman, E., Schneider, J., & Helmig, R. (2020). Influence of Radiation on Evaporation Rates: A Numerical Analysis. Water Resources Research, 56(10), Article 10.
  2. Coltman, E., Lipp, M., Vescovini, A., & Helmig, R. (2020). Obstacles, Interfacial Forms, and Turbulence: A Numerical Analysis of Soil--Water Evaporation Across Different Interfaces. Transport in Porous Media.
  3. Yang, G., Coltman, E., Weishaupt, K., Terzis, A., Helmig, R., & Weigand, B. (2019). On the Beavers--Joseph Interface Condition for Non-parallel Coupled Channel Flow over a Porous Structure at High Reynolds Numbers. Transport in Porous Media.


This picture showsRainer Helmig
Prof. Dr.-Ing.

Rainer Helmig

Spokesman, Principal Investigator, Research Projects A02 and C02, Central Project Z

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