Profile

Hans Holger Hundborg Koss is an Associate Professor at the Department of Civil and Mechanical Engineering, Section for Structures and Safety, at the Technical University of Denmark (DTU) in Kgs. Lyngby, Denmark. His long-standing research experience is in the field of Wind Engineering and Structural Dynamics with particular focus on the simulation of wind loads on buildings and structures (experimentally and numerically), their static and dynamic response and the climatic behaviour of the Urban Environment. With his design work on a specialised Climatic Wind Tunnel in 2008-2009, his research expanded to cold climate effects on aerodynamic performance of bridge cables and wind turbine blades, especially related to Atmospheric Icing. With the investigation of topology optimisation of minimal structures under stochastic loading in 2016, he embarked on the field of 3D Additive Manufacturing. This activity lead subsequently to the development of an innovative Biopolymer-based Composit as a building material allowing a high degree of freedom in the printing process.

His teaching covers Wind Engineering, Wind Tunnel Testing, Structural Engineering, Probabilistic Modelling, Urban Environments and Experimental Structural Mechanics on both basic and advanced level.

Other information

Work Experience:

Danish Maritime Intitute/FORCE Technology, Department for Hydro and Aerodynamics

Centre Scientifique et Technique du Bâtiment (CSTB), Nantes, France

Boundary-layer Wind Tunnel Laboratory University of Bochum, Germany

Language Skills:
German
English
Danish
French

Research areas

Structures & Climate Impacts:

• Simulation of wind effects on structures (main focus on high-rise buildings and cable-supported bridges).
• Assessment of static and dynamic response of structures to stochastic load processes with respect to safety, lifetime and occupant comfort.
• Wind tunnel testing in general (main focus on atmospheric boundary-layer flow).
• Assessment of helicopter operations to ships and offshore structures through wind tunnel testing.
• Experimental simulation of in-cloud icing of structures under wind (bridge cables, wind turbine blades, etc.) including development of measurement techniques for ice layer characterisation.
• Thermodynamics of smart surfaces with respect to hydro and icephobic behaviour.
• Aerodynamic instabilities due to icing.
• Topology optimisation of load-carrying structures in connection to 3D-printing (additive manufacturing).
• Development of test methods for non-invative diagnostic of structural health.

Material:

• Biopolymer composites as building (structural) material.

Environmental Engineering:

• Effect of the urban environment on the comfort of people (wind and thermal comfort aspects).
• Design of urban areas as a sustainable environment for high liveability.
• Snow accumulation on and around buildings in the Arctic (wind tunnel simulation and field measurements/monitoring).
• Exhaust gas dispersion around large structures (onshore and offshore) and ships.
• Passenger wind comfort onboard cruise vessels.

Special Investigation Tasks:

• Investigation of aerodynamic implication of train accident on the Great Belt Bridge (as a DTU group member for the Accident Investigation Board Denmark).
• Wind field and climate at the Great Belt Bridge in relation to vehicle response to aerodynamic loading (member of DTU group).

Other Research Interests:

• Evolution of structural form finding in nature (chambered shells in particular).
• Biomimetic in structural design.