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Computational modelling of non-equilibrium condensing steam flows in low-pressure steam turbines
(Lappeenranta University of Technology, 2016-07-07)
The steam turbines play a significant role in global power generation. Especially, research
on low pressure (LP) steam turbine stages is of special importance for steam turbine man-
ufactures, vendors, power plant owners ...
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 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 ...
Reactive crystallisation studies of CaCO3 processing via a CO2 capture process : real-time crystallisation monitoring, fault detection, and hydrodynamic modelling
(Lappeenranta-Lahti University of Technology LUT, 2022-11-04)
Currently, a broad spectrum of decarbonisation efforts are ongoing in fundamental areas of human lifestyle to mitigate the global concerns materialising from climate-related transformations. Within the framework of carbon ...
Production of elemental carbon via molten carbonate electrolysis: prospects and challenges
(Lappeenranta-Lahti University of Technology LUT, 2024-10-25)
Carbon capture and utilization (CCU) is a viable approach to convert atmospheric CO2 into various valuable end products such as fuels, chemicals, and construction materials. In the context of CCU, this research focuses on ...
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 ...
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 ...
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 ...
Numerical and ExperimentalModelling of Gas Flow and Heat Transfer in the Air Gap of An Electric Machine
(2002-11-08)
This work deals with the cooling of high-speed electric machines, such as motors and generators, through an air gap. It consists of numerical and experimental modelling of gas flow and heat transfer in an annular channel. ...