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CFD-based optimization for wind turbine locations in a wind park
(Lappeenranta-Lahti University of Technology LUT, 2019-05-10)
Searching for the optimal positions of wind turbines in a wind farm for their maximal power generation has an important and difficult role in the wind energy industry. Several factors have to be considered while designing ...
Experimentally validated numerical modelling of reacting multiphase flows in stirred tank reactors
(Lappeenranta-Lahti University of Technology LUT, 2019-04-12)
Homogenization of reacting flows by mixing is often important in order to achieve high reaction rates. Mechanical RANSagitation is the usual way to homogenize fluids used in industry. When supplied to fluid media, mechanical ...
Computational fluid dynamics analysis of steam condensation in nuclear power plant applications
(Lappeenranta University of Technology, 2016-04-04)
Detailed experimental and numerical investigations of safety systems and various key
components of nuclear power plant are important from both view points of safety and
economical aspects. This thesis presents the ...
Computational studies for the design of process equipment with complex geometries
(Lappeenranta University of Technology, 2014-02-12)
This study combines several projects related to the flows in vessels with complex shapes
representing different chemical apparata. Three major cases were studied. The first
one is a two-phase plate reactor with a complex ...
CFD Modelling of Direct Contact Condensation in Suppression Pools by Applying Condensation Models of Separated Flow
(Lappeenranta University of Technology, 2012-04-13)
The condensation rate has to be high in the safety pressure suppression pool systems of
Boiling Water Reactors (BWR) in order to fulfill their safety function. The phenomena
due to such a high direct contact condensation ...
Modeling the effects of unsteady flow patterns on the fireside ash fouling in tube arrays of kraft and coal-fired boilers
(Lappeenranta University of Technology, 2016-10-20)
The modeling of ash deposition trends, rates, and shapes has been the target of numerous
investigations since slagging and fouling constitute a major penalizing factor in boiler
performance. Also, they are the most usual ...
Computational and Experimental Investigation of the Grooved Roll in Paper Machine Environment
(Lappeenranta University of Technology, 2009-12-16)
In the paper machine, it is not a desired feature for the boundary layer flows in the fabric and the roll surfaces to travel into the closing nips, creating overpressure. In this thesis, the aerodynamic behavior of the ...
Computational fluid dynamics as a tool for process engineering
(Lappeenranta-Lahti University of Technology LUT, 2020-10-02)
Modern engineering increasingly employs various computer software to develop products. The use of software to simulate product performance is known as computer-aided engineering (CAE). CAE supports the design process of a ...
Comprehensive Study of Crystal Growth from Solution
(2004)
Crystal growth is an essential phase in crystallization kinetics. The rate of crystal growth provides significant information for the design and control of crystallization processes; nevertheless, obtaining accurate growth ...
Numerical modelling of small supersonic axial flow turbines
(Lappeenranta University of Technology, 2010-08-25)
Supersonic axial turbine stages typically exhibit lower efficiencies than subsonic axial turbine stages. One reason for the lower efficiency is the occurrence of shock waves. With higher pressure ratios the flow inside the ...