Jan Wilhelm Gärtner

Euler-Euler and Euler-Lagrange Simulation of Laser-Induced Ignition under Flashing Conditions

Christian Sessler, Jan Wilhelm Gärtner, Andreas Kronenburg

de (code pays fourni par la source)

Large-eddy simulation of moderately dense evaporating sprays with particle-informed super-resolution

Ruyue Cheng, Ali Shamooni, Andreas Kronenburg, Jan Wilhelm Gärtner et autres

In large-eddy simulation (LES) of dense sprays or sprays with pronounced clustering, evaporation rates can be inaccurate when the mesh is too coarse to provide realistic boundary conditions for the widely employed single droplet evaporation model. This is especially relevant to liquid …

Modelling differential diffusion in non-premixed combustion of fuel blends using a sparse particle approach

Sergio Gutiérrez, Andreas Kronenburg, Thorsten Zirwes, Jan Wilhelm Gärtner et autres

The next generations of gas turbines are expected to be ‘fuel-flexible’, i.e. to reliably operate with variable fuel mixtures ranging from pure carbon-free fuels such as ammonia and hydrogen to natural gas and blends thereof. These fuel mixtures pose challenges, however, due …

de (code pays fourni par la source)

Replication Data for: Numerical Investigation of Flash Evaporation of the Combined Injection of Liquid Oxygen and Gaseous Methane/Hydrogen

Christian Sessler, Jan Wilhelm Gärtner, Andreas Kronenburg

General Information This dataset contains the OpenFOAM case files to generate the published data in: C. Sessler, J. W. Gärtner and A. Kronenburg, "Numerical Investigation of Flash Evaporation of the Combined Injection of Liquid Oxygen and Gaseous Methane/Hydrogen", Multiphase Science and Technology, …

de (code pays fourni par la source)

Advancement of Sparse Particle Method for High-Performance Computing

Jan Wilhelm Gärtner, Oliver T. Stein, Andreas Kronenburg

de (code pays fourni par la source)

Multiphysics Simulation and Benchmarking of Laser-Induced Ignition under Propellant Flashing Conditions of an Experimental Rocket Combustion Chamber

Christian Sessler, Jan Wilhelm Gärtner, Andreas Kronenburg, Alexander Bee et autres

de (code pays fourni par la source)

Modeling droplet size distributions in flashing sprays with 3D LES using an enhanced ELSA approach

Jan Wilhelm Gärtner, Andreas Kronenburg

Flashing sprays play a critical role in high-altitude propulsion systems, where rapid phase transitions and complex transonic effects govern spray breakup and droplet formation. This study applies a novel Flashing Liquid Atomization Model (FLAM), within a hybrid Eulerian–Lagrangian framework to predict droplet …

de (code pays fourni par la source)

Testing Strategies for OpenFOAM Projects

Jan Wilhelm Gärtner, Gregor Olenik, Mohammed Elwardi Fadeli, Lukas Petermann et autres

While testing is increasingly recognized as essential in scientific software development, it is not yet standard practice within the OpenFOAM community for developing new solvers and features. This gap stems partly from the challenges of integrating testing into typical OpenFOAM workflows and …

de, ru (code pays fourni par la source)

Modeling Droplet Size Distributions in Flashing Sprays with 3d Les Using an Enhanced Elsa Approach

Jan Wilhelm Gärtner, Andreas Kronenburg

de (code pays fourni par la source)

NUMERICAL INVESTIGATION OF FLASH EVAPORATION OF THE COMBINED INJECTION OF LIQUID OXYGEN AND GASEOUS METHANE/HYDROGEN

Christian Sessler, Jan Wilhelm Gärtner, Andreas Kronenburg

In this work a novel Euler-Euler, two-phase, multi-species solver based on OpenFOAM for the simulation of flashing cryogenic jets is developed. The solver is applied to two test cases of a coaxial injection of cryogenic liquid oxygen (LOX) and gaseous methane (CH4) …

de (code pays fourni par la source)

Modeling dense droplet spray combustion with multiple-mapping conditioning

Jan Wilhelm Gärtner, K. Lam, Andreas Kronenburg

Accurate modeling of dense spray combustion remains a key challenge due to complex two-phase interactions, turbulence, and evaporation dynamics. This study advances the sparse stochastic particle method MMC-LES by introducing a novel droplet–droplet–particle (DDP) coupling model to improve the representation of phase …

de (code pays fourni par la source)

A chemistry load balancing model for OpenFOAM

Jan Wilhelm Gärtner, Ali Shamooni, Thorsten Zirwes, Andreas Kronenburg

Efficient simulation tools are crucial for studying complex systems such as reacting flows where computational costs of computing chemical reaction rates can vastly exceed the costs for the integration of the convective and diffusive transport terms. Load imbalance in parallel computing poses …

de (code pays fourni par la source)