Computational fluid dynamics - closed projects

Selected closed projects of the last decade:

• Poly-dispersed bubbly flows in vertical pipes⁽²⁾ (Testsolver⁽³⁾)
• Poly-dispersed bubbly flows in complex geometries⁽⁴⁾
• Modelling and simulation on boiling processes in pressurized water reactors⁽⁵⁾
• Modelling and simulation of boiling flows in modules with large vertical dimensions⁽⁶⁾
• Modelling of churn-turbulent flows⁽⁷⁾
• Bubble entrainment caused by a liquid jet⁽⁸⁾
• CFD-model development and validation related to the transport, deposition and re-suspension of aerosol particles⁽⁹⁾
• CFD simulation of fibre material transport in a PWR core under loss of coolant conditions⁽¹⁰⁾
• Modelling and simulation of two-phase flows in bubble columns⁽¹¹⁾
• CFD models for two-phase flows Ceramic solid foam packing⁽¹²⁾
• Flow maps and models for transient two-phase flows⁽¹³⁾
• Investigations on wet instable foams⁽¹⁴⁾
• Insulation debris transport phenomena in water flow⁽¹⁵⁾

In close co-operation with the department of Experimental Thermal Fluid Dynamics⁽¹⁶⁾ the following projects aiming on the generation of experimental data for two-phase flows suitable for CFD code qualification were done:

• Gas-liquid flows in vertical pipes⁽¹⁷⁾
• Flow around an obstacle in a vertical DN200 pipe⁽¹⁸⁾
• Hot leg model of a Pressurized Water Reactor (PWR)⁽¹⁹⁾
• Stratified flows⁽²⁰⁾
• Pressurized Thermal Shock (PTS) in case of Emergency Core Cooling in a PWR⁽²¹⁾
• Experiments on boiling processes in pressurized water reactors⁽²²⁾
• Experiments related to the transport, deposition and re-suspension of aerosol particles

In addition there was a close cooperation with the department of Reactor Safety⁽²³⁾ of the Institute of Resource Ecology⁽²⁴⁾ in the field of CFD code development regarding:

• the analyses of boron dilution transients⁽²⁵⁾ and
• the coupling of CFD with the reactor core model DYN3D.

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