Tallinn University of Technology

Mechanics of Fluids and Structures Research Group

Konstruktsiooni- ja vedelikumehaanika töögrupp tegeleb konstruktsioonide ning vedelikes (gaasides) aset leidvate protsesside uurimisega nii eraldiseisvalt kui koostöö piirimail. Külasta täiendava info saamiseks ka allveeakustika kodulehte!

  • Konstruktsioonide valdkonnas õpetatakse ehituseriala tudengitele ehitusmehaanika ning tehnilise mehaanika aluseid, - põhiteadmised, milleta ei saa läbi ükski ehitusinsener.
     
  • Vedelike (aero-) mehaanikas puututakse kokku hüdraulika aluste aga ka hüdro- ja aerodünaamika põhiprintsiipidega, mis on alusaineteks spetsialiseerumaks hoonete tehnovõrkude disainile või infrastruktuuride planeerimisele.
Ave Eessalu EAMH

Ongoing projects

EA interreg logo ja EU lipp
EA NOAH

Climate change brings along intense rainfalls and storms in the Baltic Sea region. Urban drainage systems are not capable to handle this, and therefore floods are becoming more common in the densely populated areas. Floods rise the risk of flushing untreated wastewater from urban drainage systems into the nature. This is harmful to people and environment due to the excessive amount of nutrients, hazardous substances and pathogenic microbes in wastewater. Urban areas can be prepared for floods by improved planning and self-adaptive drainage operations. NOAH project has brought together 9 towns and water utilities, 7 academic and research institutions and 2 umbrella organisations from 6 countries around the Baltic Sea to join their forces. NOAH’s approach is to create a concept for holistic planning and implement smart drainage systems in real urban environments. Holistic planning combines stormwater management with spatial planning. This is followed by development of smart drainage systems to make the existing facilities resilient to the impacts of climate change. The NOAH concept will be easily scalable to any urban area around the Baltic Sea. Implementation of the concept could cut up to half of the inflow of pollutants into the Baltic Sea. The activities will be anchored into daily practices of towns and water utilities, leading to healthier and cleaner Baltic Sea!

Partners:

Tallinn University of Technology (lead partner), Satakunta University of Applied Sciences, Gdansk University of Technology, City of Haapsalu, City of Rakvere, Liepaja municipal authority "Komunālā pārvalde", Natural Resources Institute Finland (Luke), Estonian Waterworks Association, City of Pori, Halmstad University, Economic Chamber Polish Waterworks, Riga Technical University, Ogre municipality, Slupsk Water Supply, Technical University of Denmark, Jurmalas udens Ltd, The municipality of Söderhamn, Rakvere Water Company

Duration: 1.01.2019 – 30.09.2021

Project total budget: 2 998 360.25 €

TalTech budget: 389 592.75 €

https://sub.samk.fi/projects/noah/

ETIS

New Goal Based Standard issued by IMO will change the philosophy how ships are currently designed. The central element for optimal ship design will be fluid-structure interaction (FSI) model, where ship’s behaviour and structural response under hydrodynamic loads is evaluated simultaneously. The project aims to develop such combined model using two-way partitioned approach for FSI simulations. To achieve the objective, two disciplines are combined for numerical calculations: (i) computational fluid dynamics are applied for the evaluation of fluid motions and forces; and (ii) structural mechanics using coupled beam method or non-linear finite element simulations for the evaluation of dynamic response of ship hull. Focus will be on slamming loads, resistance and seakeeping characteristics, whipping response and optimal structural configuration including geometric appendages. The developments are validated with experimental tests conducted in the ship model towing tank of SCC of TTÜ.

ETIS

According to the Estonian Climate Change Adaption Development Plan the frequency of extreme rainfall events in Estonia will increase 3 times by the year 2030. This will increase the load to the existing urban drainage system (UDS) causing the risk of floods and outflow of pollutants to the environment. A shift in paradigm is needed in urban runoff control to overcome these challenges. In this project a novel smart decentralized stormwater system management platform will be developed to make existing UDS controllable and thus utilize the free capacity of the system more efficiently. For that, state-of-the art solutions from environmental engineering and ICT will be integrated. Novel control modes will be coupled with UDS model and sensors equipped with low-power long-range communication technologies. The concept will be tested in lab conditions and in real UDS. The implementation of the platform enables to change the control of the existing UDS from reactive to proactive.

Duration: 1.01.2020 – 31.12.2024

ETIS

EA lipp ja interreg logo
EA change makers

Interreg Central Baltic ChangeMakers project is funded under Competitive Economy priority’s specific objective More Entrepreneurial Youth. This priority aims at a balance between economic and environmental interests and to use the potential of the young generation to make the Central Baltic region more entrepreneurial and competitive in the coming years.

ChangeMakers project aims to develop sustainable thinking and innovative competence on environmental sector of Finnish (inc. Åland), Estonian, Latvian, and Swedish 15-17-year-old students.

In total, 250 students will participate and the project’s result is the creation of 50 cross-border student companies and an open access ePlatform tool “ChangeMakers”.

In Estonia, TalTech’s Mechanics of Fluids and Structures Research Group in cooperation with Innovation and business centre Mektory participate in the project. The innovative water management technology combined with ideas of circular economy are essentials for successful environmental protection. Projects broad involvement of private sector mentors and experts of sustainable environment from the university gives an excellent platform for appealing bright young minds to the environmentally oriented study programs of TalTech.

Partners:

University of Turku (lead partner), Stockholm University, Tallinn University of Technology, Riga Technical University, Åland's Vocational school, Satakunta University of Applied Sciences

Duration: 1.03.2020 – 31.11.2022

Project financing from European Regional Development Fund: 1 080 723.05 €

TalTech budget: 174 592.80 €

https://www.utu.fi/changemakers

EA lipp ja interreg logo
EA Clean Stormwater logo

The aim of the project is to develop and test new storm water treatment solutions that are more efficient, ensure management quality and monitor of water quality near real time and enable operative response in emergency cases. In addition during the project novel water quality monitoring systems will be tested and implemented to 4 pilot sites in Estonia, Latvia and Finland.

The pollution of the Baltic Sea is a common problem, which cannot be solved by a single country. The main efforts have so far been focusing on industrial or agricultural wastewater, and pollution coming from storm water has not received sufficient attention. The use of storm water treatment solutions preventing and combating the spread of hazardous substances into the Baltic Sea through storm water is still not widespread. Available solutions are low in number, their effectiveness has not been measured and municipalities around BS do not have overview on the nature and dynamics of such substances.

During the project novel storm water treatment solutions will be implemented in Viimsi (EE), Riga (LV), Lieto and Turku (FI). Guidelines for the storm water treatment solutions will be provided for the main end-users and stakeholders (local municipalities, water utilities) to ensure the effective control and management of the units throughout their lifespan.

The lead partner of the project is Viimsi Rural Municipality Government, other partners are city of Riga, Turku University of Applied Sciences (TUAS) and Royal Institute of Technology (KTH)

Duration: 1.02.2020 – 31.12.2022

Project total budget: 1 661 825.73 €

TalTech’s budget: 248 797.06 €

https://www.viimsivald.ee/interreg-cb-project-cleanstormwater

Completed Projects

The project consists of three main topics: -Reduction of risks and energy consumption in hydraulic systems; -Limit state analysis of ship structures; -Acoustic field information on structural integrity. The first topic covers research of fluid dynamics in hydraulic networks, such as unsteady flow, transient flow, air-water interactions, stratified flow, the dynamic calibration of network models and functioning optimization to reduce risks and energy consumption in hydraulic systems. The second topic will allow to improve the safety of maritime transportation and its focus is to provide methods to lower the risk for a severe maritime accidents. The third topic focuses on underwater noise measurements and sound propagation modelling to determine shipping noise intensity and achieve good environmental status of marine waters according to Marine Strategy Framework Directive. Another focus will be on the improvement of non-destructive evaluation of the structures and adhesive joints.

ETIS

 
 

 (01.04.2015 - 31.03.2018)

STORMWINDS contributes to operational and strategic management of ecological risks to the Northern Baltic Sea, emerging from maritime transportation incidents and accidents. Focus is on wintertime conditions as most accidents in the area occur in the ice season. To achieve these aims, advances are made to support operational risk management in two ways. First, a holistic cross¬border and cross¬sector analysis of the vessel traffic control and emergency response services is performed, using a systems¬theoretic approach. This analysis is further placed in context with maritime spatial planning, leading to policy¬relevant recommendations. The systems¬theoretic approach is furthermore applied to probabilistic, indicator¬based safety management modelling for vessel traffic services operation and training. Second, specific tools for operational risk management are developed. Accident prevention is enhanced through the development of e¬navigation services related to ship routing and ship performance in ice. Accident response is enhanced through the development of smart response services for shipping accidents. STORMWINDS addresses strategic risk management through the development of a risk management model for spill response effectiveness in wintertime conditions, resulting in recommendations regarding fleet organization. Both the operational and strategic risk management work require scientific advances in various fields, which are used in parallel to achieve the overall aims.

ETIS

 

 (01.10.2015 - 30.09.2018)

 Waterchain is a practical tool that aims to reduce the inflow of nutrients and hazardous substances into the Baltic Sea from all types of land-based sources e.g from agriculture to storm water systems, from point source pollution to diffuce pollution. The project covers the whole aspect of a waterchain - water supplies, water usage, sewage, inflow to waterbodies. The project considers all regional water management plans. Cost efficient methods to reduce nutrinets and hazardous substances inflow into the Baltic Sea will be studied.The main actions are carried out in the pilot watersheds in each partner country with the practical actions targeted to sustainable impact. In Estonia the pilot area is Tallinn catchment area, where are many municipalities with their water treatment plants, agriculture companies with point source and diffuce pollution that influence the quality of raw water. Water quality measurments will be made in the pilot area to map the pollution sources and calibrate the model. A model is used to find best practices for reducing pollution. Models used will be calibrated and modified based on Estonias specifities. Best practices will be launched in other geographical areas within the Central Baltic region and further all countries around the Baltic Sea. Project results have a direct impact on the quality of living environment of local people and visitors to the area, especially on pilot watersheds. As a whole, the results increase the competitiveness and economic sustainability of all Central Baltic countries.

 

ETIS

The level of continuous anthropogenic underwater noise in the oceans is increasing over the years. The reason for this is the increase in ship traffic and the introduction of ever larger and faster ships. Underwater noise can be detrimental to marine life, especially for species that use acoustic signals for communication, nutrition and other vital functions. Based on the primary data collected during the project, the statistical characteristics used as the baseline of the Baltic Sea underwater noise levels were calculated.
 
Report: LMIN16081
BIAS project web-page: https://biasproject.wordpress.com/

PhD students

Supervisor: Prof. Aleksander Klauson

Influence of stratification to the underwater noise in Baltic Sea

ETIS

Supervisor: Prof. Aleksander Klauson

Underwater Ambient Noise Spectrum of the Baltic Sea

Supervisor: Assoc. Prof. Hendrik Naar,  Co-supervisor: Prof. Aleksander Klauson

Developing and testing a new type reinforcement for 3D concrete printing

ETIS

Supervisor: Senior Research Scientist Ivar Annus  Co-supervisor: prof. Raido Puust

Smart City - Smart Stormwater Systems

ETIS

Supervisor: Senior Research Scientist Ivar Annus

Development of a holistic planning and control approach for climate proof smart cities

ETIS

Supervisor: Assoc. prof. Janek Laanearu

Dynamical Processes of Unsteady Two-phase Fluid Flow in Hydraulic Systems (Experimental and Computational Fluid Dynamics)

ETIS

Supervisor: Senior Research Scientist Kristjan Tabri

Fluid-structure interaction for the assessment of dynamic loads and response of ship hull girder

ETIS

Supervisor: Senior Research Scientist Kristjan Tabri

Numerical and experimental modelling of hydrodynamic performance High-Speed Marine Vehicles

ETIS