Refine
Year of publication
Document Type
- Conference Proceeding (73)
- Article (68)
- Report (6)
- Part of a Book (4)
- Book (1)
- Poster (1)
Language
- English (153) (remove)
Keywords
- metal structure (4)
- steel (4)
- industrial research (3)
- iron and steel industry (3)
- materials technology (3)
- research report (3)
- building industry (2)
- building information modelling (2)
- building materials (2)
- energy efficiency (2)
- research project (2)
- resistance of materials (2)
- 20 fossil-fueled power plants (1)
- 3D printing (1)
- Algal Turf Scrubber (1)
- Algal–bacterial bioflm (1)
- Anammox (1)
- BIM (1)
- Biogas (1)
- Circular bioeconomy (1)
- Energy system (1)
- Freshmen (1)
- HVAC (1)
- Hazard assessment (1)
- Hydraulic structures (1)
- Landslide tsunamis (1)
- Large scale tests (1)
- Mainstream (1)
- Methane (1)
- Mixed integer linear programming (MILP) (1)
- Nitrogen removal (1)
- Open channels (1)
- Overland flow (1)
- PIV (1)
- Partial nitritation (1)
- Physical modeling (1)
- Proper Orthogonal Decomposition (1)
- Q-criterion (1)
- Renewable energy (1)
- Sharing mobility (1)
- Similitude (1)
- Smart Building Engineering (1)
- Solitary waves (1)
- Time-series aggregation (1)
- Typical periods (1)
- VOF (1)
- Wastewater (1)
- anammox (1)
- building safety (1)
- building technique (1)
- business models (1)
- ceramics (1)
- coherent structures (1)
- construction (1)
- dam-break (1)
- designs and models (1)
- drag force (1)
- electro mobility (1)
- emote practical training (1)
- energy disspation (1)
- filtration (1)
- food production (1)
- friction (1)
- gas flow (1)
- guide (1)
- hot gas cleanup (1)
- hydraulic modelling (1)
- ingot (1)
- lockdown conditions (1)
- mainstream deammonification (1)
- mobility behaviour (1)
- model performance (1)
- nitrogen elimination (1)
- numerical model (1)
- physical model (1)
- prefabrication (1)
- remote teamwork (1)
- renewable energy (1)
- roleplay (1)
- small and medium scaled companies (1)
- smart building engineering (1)
- smart engineering (1)
- sustainability (1)
- testing (1)
- thermal insulation (1)
- urban farming (1)
- virtual reality (1)
- wastewater (1)
- wave run-up (1)
Institute
- Fachbereich Bauingenieurwesen (153) (remove)
A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach RNG k-ε. A Volume Of Fluid (VOF) method is used to track the air–water interface, consequently aeration is modeled using an Eulerian–Eulerian approach. Structured meshes of cubic elements are used to discretize the channel geometry. The numerical model accuracy is assessed comparing representative hydraulic jump variables (sequent depth ratio, roller length, mean velocity profiles, velocity decay or free surface profile) to experimental data. The model results are also compared to previous studies to broaden the result validation. Both codes reproduced the phenomenon under study concurring with experimental data, although special care must be taken when swirling flows occur. Both models can be used to reproduce the hydraulic performance of energy dissipation structures at low Reynolds numbers.
Application of the optical flow method to velocity determination in hydraulic structure models
(2016)
Sensitivity of turbulent Schmidt number and turbulence model to simulations of jets in crossflow
(2016)
Environmental discharges have been traditionally designed by means of cost-intensive and time-consuming experimental studies. Some extensively validated models based on an integral approach have been often employed for water quality problems, as recommended by USEPA (i.e.: CORMIX). In this study, FLOW-3D is employed for a full 3D RANS modelling of two turbulent jet-to-crossflow cases, including free surface jet impingement. Results are compared to both physical modelling and CORMIX to better assess model performance. Turbulence measurements have been collected for a better understanding of turbulent diffusion's parameter sensitivity. Although both studied models are generally able to reproduce jet trajectory, jet separation downstream of the impingement has been reproduced only by RANS modelling. Additionally, concentrations are better reproduced by FLOW-3D when the proper turbulent Schmidt number is used. This study provides a recommendation on the selection of the turbulence model and the turbulent Schmidt number for future outfall structures design studies.