Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Florian Ries"'
Publikováno v:
Entropy, Vol 24, Iss 8, p 1099 (2022)
This paper provides a review of different contributions dedicated thus far to entropy generation analysis (EGA) in turbulent combustion systems. We account for various parametric studies that include wall boundedness, flow operating conditions, combu
Externí odkaz:
https://doaj.org/article/a5b2bc3bbdee42b08fec40ec3a6cc974
Autor:
Yongxiang Li, Luis Felipe Rico Cortes, Hardy Hamel, Kaushal Nishad, Luigi Biondo, Florian Ries
Publikováno v:
Entropy, Vol 24, Iss 5, p 602 (2022)
In the present work, heat transfer and fluid flow and their effects on entropy generation in a realistic catalytic converter of a Lada Niva 21214 vehicle are studied using large eddy simulation. At first, the pressure drop over the catalytic converte
Externí odkaz:
https://doaj.org/article/df9a7e8420444581b3f721421c9ac37a
Publikováno v:
Entropy, Vol 24, Iss 5, p 615 (2022)
This contribution presents a straightforward strategy to investigate the entropy production in stratified premixed flames. The modeling approach is grounded on a chemistry tabulation strategy, large eddy simulation, and the Eulerian stochastic field
Externí odkaz:
https://doaj.org/article/1aa108624f2b4c729966c067088a5a42
Publikováno v:
Energies, Vol 14, Iss 19, p 6315 (2021)
A second law analysis in combustion systems is performed along with an exergy loss study by quantifying the entropy generation sources using, for the first time, three different approaches: a classical-thermodynamics-based approach, a novel turbulenc
Externí odkaz:
https://doaj.org/article/c088556b40da44e8a3bc919d2ee4a09d
Publikováno v:
Entropy, Vol 23, Iss 6, p 725 (2021)
In this paper, advanced wall-modeled large eddy simulation (LES) techniques are used to predict conjugate heat transfer processes in turbulent channel flow. Thereby, the thermal energy transfer process involves an interaction of conduction within a s
Externí odkaz:
https://doaj.org/article/6c5bb479d73d47bf9b77acffc736d4f7
Autor:
Louis Dressler, Fernando Luiz Sacomano Filho, Florian Ries, Hendrik Nicolai, Johannes Janicka, Amsini Sadiki
Publikováno v:
Fluids, Vol 6, Iss 2, p 50 (2021)
The Eulerian stochastic fields (ESF) method, which is based on the transport equation of the joint subgrid scalar probability density function, is applied to Large Eddy Simulation of a turbulent dilute spray flame. The approach is coupled with a tabu
Externí odkaz:
https://doaj.org/article/a27a4ff1495443298e945d0da4dfdb64
Autor:
Marc Haussmann, Florian Ries, Jonathan B. Jeppener-Haltenhoff, Yongxiang Li, Marius Schmidt, Cooper Welch, Lars Illmann, Benjamin Böhm, Hermann Nirschl, Mathias J. Krause, Amsini Sadiki
Publikováno v:
Computation, Vol 8, Iss 2, p 43 (2020)
In this paper, we compare the capabilities of two open source near-wall-modeled large eddy simulation (NWM-LES) approaches regarding prediction accuracy, computational costs and ease of use to predict complex turbulent flows relevant to internal comb
Externí odkaz:
https://doaj.org/article/08419850a54844c7bfd641e0d4c41b5e
Publikováno v:
Energies, Vol 12, Iss 13, p 2620 (2019)
Apart from electric vehicles, most internal combustion (IC) engines are powered while burning petroleum-based fossil or alternative fuels after mixing with inducted air. Thereby the operations of mixing and combustion evolve in a turbulent flow envir
Externí odkaz:
https://doaj.org/article/062313bdb0734be587038189afbd891b
Autor:
Kaushal Nishad, Marcus Stein, Florian Ries, Viatcheslav Bykov, Ulrich Maas, Olaf Deutschmann, Johannes Janicka, Amsini Sadiki
Publikováno v:
Energies, Vol 12, Iss 13, p 2600 (2019)
The selective catalytic reduction (SCR) methodology is notably recognized as the widely applied strategy for NOX control in exhaust after-treatment technologies. In real SCR systems, complex unsteady turbulent multi-phase flow phenomena including pol
Externí odkaz:
https://doaj.org/article/27e95104369a438eba3062ecfa8a0980
Publikováno v:
Applied Sciences, Vol 9, Iss 7, p 1320 (2019)
The oxidation of methane under oxy-fuel combustion conditions with carbon capture is attractive and deserves huge interest towards reducing CO2 and NOx emissions. The current paper reports on the predictions and analysis of combustion characteristics
Externí odkaz:
https://doaj.org/article/88abb6f5f5dc40bd9516ccf9e35b649a