Essays about: "one-dimensional modelling"

Showing result 16 - 20 of 25 essays containing the words one-dimensional modelling.

1. 16. Numerical Modelling of a Radial Inflow Turbine with and without Nozzle Ring at Design and Off-Design Conditions

   University essay from KTH/Energiteknik

   Author : Felippo Valentini; [2016]
   Keywords : ;

   Abstract : The design of a radial turbine working at peak efficiency over a wide range of operating conditions is nowadays an active topic of research, as this constitutes a target feature for applications on turbochargers. To this purpose many solutions have been suggested, including the use of devices for better flow guidance, namely the nozzle ring, which are reported to boost the performance of a radial turbine at both design and off-design points. READ MORE

3. 17. On Modelling Extreme Foreign Exchange Volatility Using Copulas

   University essay from Lunds universitet/Matematisk statistik

   Author : Anna Sandström; Henrik Bosaeus; [2015]
   Keywords : Foreign Exchange; Volatility; ARMA-GARCH; Block Maxima; Extreme Values; Copula; Maximum Likelihood.; Mathematics and Statistics;

   Abstract : The price volatility is an important property to monitor in financial trading. A volatile period implies threats of large losses, but at the same time opportunities of higher gains. This makes accurate volatility prediction models an important part of an algorithmic trading system. READ MORE

4. 18. Mapping Uncertainties – A case study on a hydraulic model of the river Voxnan.

   University essay from KTH/Mark- och vattenteknik

   Author : Sara Andersson; [2015]
   Keywords : Hydraulic modelling; Flood inundation map; Uncertainty assess-ment; Climate change; Frequency analysis; Calibration; MIKE 11; Voxnan;

   Abstract : This master thesis gives an account for the numerous uncertainties that prevail one-dimensional hydraulic models and flood inundation maps, as well as suitable assessment methods for different types of uncertainties. A conducted uncertainty assessment on the river Voxnan in Sweden has been performed. READ MORE

5. 19. Sensitivity of sediment transport on river characteristics in the large, braided Brahmaputra River

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Sandra Fischer; [2015]
   Keywords : Brahmaputra; Braided river; sediment transport;

   Abstract : Erosional issues in the Brahmaputra River in the eastern Himalayas pose increasing pressure on the nearby societies and ecosystems. With a proceeding climate change and increasing anthropogenic disturbance, predictive models are needed to evaluate the effect on sediment transport. READ MORE

6. 20. A Preliminary Design Tool For Radial Compressors

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Johannes Schiff; [2013]
   Keywords : radial compressor; centrifugal compressor; turbomachinery design tool; impeller; vaneless diffuser; vaned diffuser; wedge diffuser; Technology and Engineering;

   Abstract : The aim of this thesis has been to implement a computer program capable of modelling radial compressors. The work was conducted at the Division of Thermal Power Engineering, Department of Energy Sciences at the Faculty of Engineering, Lund University. With such a large field as radial compressors, some decomposition of the subject was necessary. READ MORE