Numerical and experimental investigation of gas-gas diffusion and convection

Lyu W, Kim S, Delgado A, Gatternig B, Troeger K, Schellin T (2022)

Publication Type: Journal article

Publication year: 2022


Book Volume: 34

Article Number: 103602

Journal Issue: 10

DOI: 10.1063/5.0105985


Gas-to-gas diffusion and convection phenomena exist in a wide range of applications, including industrial and scientific processes, food production and storage, and breathing gases. To analyze gas-gas mixing phenomena, a numerical model based on open-source tool libraries was developed and validated; an experimental model was built up and repeated physical tests were performed. Comparative mixing gas-gas profiles and O2 concentration time histories were presented to analyze gas-gas phenomena and to validate the developed numerical solver. Practically, relevant assessments of the gas-to-gas diffusion and convection process demonstrated that (1) obstacles accelerated gas-gas diffusion and convection, (2) diffusion and convection stabilized after a certain time period, and (3) stronger diffusion and convection occurred during the initial stages of the gas-to-gas contact.

Authors with CRIS profile

Involved external institutions

How to cite


Lyu, W., Kim, S., Delgado, A., Gatternig, B., Troeger, K., & Schellin, T. (2022). Numerical and experimental investigation of gas-gas diffusion and convection. Physics of Fluids, 34(10).


Lyu, Wenjing, et al. "Numerical and experimental investigation of gas-gas diffusion and convection." Physics of Fluids 34.10 (2022).

BibTeX: Download