Essays about: "transient flow"

Showing result 21 - 25 of 109 essays containing the words transient flow.

  1. 21. Transient Waveform Clustering : Developing efficient data analytics toolchains applying unsupervised machine learning techniques on power quality events

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Albert Varghese Rajan; [2021]
    Keywords : HVDC; Power Quality; Machine Learning; Autoencoder; Clustering; Monitoring and analytics;

    Abstract : High Voltage Direct Current (HVDC) transmission systems appropriate for bulk power transfer to meet increasing power demands and ideal for interconnecting power systems with distant renewable sources of energy without any chances of loss synchronism, efficiency, and reliability. The main obstacle is however connected with the DC grid protection where the timely diagnosis of faults is critical to prevent any rapid built-up leading to failure of the power electronic devices. READ MORE

  3. 22. Dynamic Modeling of Target's Cooling Systems

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Maximilian Cahlin; [2021]
    Keywords : Dynamic modeling; Modelica; Dymola; Fluid mechanics; Thermodynamics; Technology and Engineering;

    Abstract : The thermal energy generated from the spallation process in the ESS facility must be cooled by cooling systems in order to ensure safe operation of the facility. It is of interest to understand what operating conditions of the cooling systems will ensure this safety for both stationary conditions and transient events. READ MORE

  4. 23. Parametric Study of Separation in Outlet Diffuser of Rocket Nozzle Cooling Channel Rig : The Effect of Heat Flux and Angle of Outlet Diffuser for Rectangular-to-Circular Cross Section Transitions

    University essay from KTH/Farkostteknik och Solidmekanik; KTH/Kraft- och värmeteknologi

    Author : Hector Älfvåg; [2021]
    Keywords : ;

    Abstract : The use of natural gas with high methane content as rocket fuel has gained substantial industrial attention over the past number of years. Several actors including SpaceX and Blue Origin are developing natural gas powered rocket engines. READ MORE

  5. 24. Predict Flow Field and Mixing Time for High-Shear Mixers Using CFD

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : David Fransson; Eric Kihlman; [2021]
    Keywords : CFD; High-Shear Mixer; Energy Science; Simulation; Mixing time; blend time; Flow Field; Technology and Engineering;

    Abstract : Batch high-shear mixers are used in a variety of different processing industries,such as the pharmaceutical, chemical and food industries. One company that utilize this type of mixers is Tetra Pak. High-shear mixers can be used for many different mixing scenarios, but only liquid-liquid mixing is discussed in the thesis. READ MORE

  6. 25. On the Identification of Nonlinear Optima in Spatially Developing Boundary Layer Flow

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Emanuel Taschner; [2021]
    Keywords : transition to turbulence; nonlinear stability analysis; boundary layer flow; övergång till turbulens; icke-linjär stabilitetsanalys; gränsskiktsflöden;

    Abstract : The present thesis studies transition to turbulence in a spatially developing bound-ary layer for subcritical Reynolds numbers. A fully nonlinear iterative direct-adjoint optimisation technique is employed to identify finite amplitude perturbations triggering transition in an energy efficient way. READ MORE