Essays about: "Numerical Simulation"

Showing result 1 - 5 of 390 essays containing the words Numerical Simulation.

  1. 1. Numerical Study on Air Demand of Free Surface Flows in a Discharge Tunnel

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutionen för fysik och astronomi

    Author : Jonathan Barassa; Rickard Nordlöf; [2020]
    Keywords : Computational Fluid mechanics; Hydropower; Air demand; Free surface flows; ANSYS Fluent;

    Abstract : Aeration issued through a ventilation shaft is an important measure to prevent cavitation and large gauge pressure in flood discharge tunnels. In order to dimension the ventilation shaft appropriately, itis necessary to have a good understanding of the air-water flow in the tunnel. READ MORE

  2. 2. CFD Simulation of Particles in Pipe Flow and Mixing Tank

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Aljaz Janic; [2020]
    Keywords : Multiphase flow; particles; TetraPak; mixing tank; pipe flow;

    Abstract : This project aimed to investigate the capability of the STAR CCM+ software when predicting the flow with particles using Lagrangian Particle Tracking and Discrete Element Method. The first part pertained to rectangular channel flow, with ratio between height of the channel and particle diameter (2h/Dp ) of 15. READ MORE

  3. 3. Sensitivity analysis of grate inlet representation and a comparison of two coupled hydraulic models for urban flood simulation

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Daniel Lundqvist; [2020]
    Keywords : Urban flood models; 1D-2D coupled models; MIKE FLOOD; FLO-2D; inlet grates; manholes;

    Abstract : Urban flood models are an important tool in designing and analyzing municipalities sewer drainage systems and predicting the effect of potential extent and depth of future floods. In urban areas, coupled 1D-2D flood models are particularly useful as they can represent the surface- and sewer system and their interactions. READ MORE

  4. 4. Implied volatility expansion under the generalized Heston model

    University essay from Mälardalens högskola/Akademin för utbildning, kultur och kommunikation; Mälardalens högskola/Akademin för utbildning, kultur och kommunikation

    Author : Hanna Andersson; Ying Wang; [2020]
    Keywords : Heston model; Generalized Heston model; implied volatility; implied volatility expansion; Black–Scholes; Monte Carlo method; European options;

    Abstract : In this thesis, we derive a closed-form approximation to the implied volatility for a European option, assuming that the underlying asset follows the generalized Heston model. A new para- meter is added to the Heston model which constructed the generalized Heston model. READ MORE

  5. 5. CFD Simulations of Flow Characteristics of a Piano Key Weir Spillway

    University essay from Uppsala universitet/Elektricitetslära; Uppsala universitet/Elektricitetslära

    Author : William Sjösten; Victor Vadling; [2020]
    Keywords : Piano Key Weir; Ansys Fluent; Multiphase Flow; Spillway; Flow Characteristics; CFD; Realizable k-epsilon; Volume of Fluid; Renolds-averaged Navier-Stokes;

    Abstract : Comprehensive rehabilitation projects of dam spillways are made in Sweden, due to stricter dam safety guidelines for their discharge capacity. The Piano Key Weir (PKW) is an innovative design which has proven effective through several renovation projects made in many countries including France. READ MORE