Essays about: "existing tunnel"

Showing result 6 - 10 of 40 essays containing the words existing tunnel.

  1. 6. Stochastic Settlement Model Including Creep Effects : Simulation of Groundwater Induced Subsidence

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Pierre Wikby; Ragnar Andersson; [2020]
    Keywords : creep settlement; secondary compression; geotechnical uncertainty; EMBANKCO; groundwater drawdown; time-dependent settlement model; krypsättningar; Sekundärkompression; geoteknisk osäkerhet; EMBANKCO; grundvattensänkning; tidsberoende sättningsmodell;

    Abstract : When underground openings are constructed, groundwater inflow can occur, which might lead to ground settlements, namely in clay. In these types of construction projects, it is beneficial to be able to quantify risks related to these settlements. A framework developed by Sundell et al. (2019, Risk Analysis, Vol. READ MORE

  3. 7. Wind Vector Estimation by Drone

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : EDVIN KUGELBERG; OSCAR ANDERSSON; [2020]
    Keywords : Mechatronics; Drone Simulation; UAV; Wind Measuring; WindVector Estimation; Quadcopter Project.;

    Abstract : An original approach for measuring wind speed and direction by the use ofdrones was proposed and compared to an existing one. The original approach allowed the drone to drift with the wind and use the translatory velocity for input into a non-linear estimator, while the existing approach used a stationary hovering drone and its tilt for input to an estimator. READ MORE

  4. 8. Evaluation and comparison of ballastless track systems with regards to system and performance characteristics

    University essay from KTH/Spårfordon

    Author : Willand Björkquist; Ismayil Janjua; [2020]
    Keywords : ;

    Abstract : As axle loads and speeds constantly increase in rail transport, new track systems are being developed. One such development is the ballastless track system. READ MORE

  5. 9. Transfer Path Analysis of Wind Noise on a Passenger Car

    University essay from KTH/Farkost och flyg

    Author : Ren Huawei; [2019]
    Keywords : Transfer Path Analysis TPA ; Wind Noise; Principle Com-ponent Analysis PCA ; Matrix Inversion Method; Transfer Path Analysis TPA ; Wind Noise; Principle Com-ponent Analysis PCA ; Matrix Inversion Method;

    Abstract : Over the last years, due to the development of quieter engines and drivetrains, the importance of addressing the vehicle wind noise problem has significantly increased.In this thesis work, several existing Transfer Path Analysis methods have been applied on an experimental database acquired during a wind tunnel test on a passenger car with the objective of analyzing the distribution of the wind noise sources and their contribution to the target microphones located inside the vehicle. READ MORE

  6. 10. Loosely coupled, modular framework for linear static aeroelastic analyses

    University essay from KTH/Lättkonstruktioner

    Author : Aaron Dettmann; [2019]
    Keywords : Aeroelasticity; Simulation; CFD; FEM; VLM; Euler-Bernoulli beam theory III; Aeroelasticitet; Simulation; CFD; FEM; VLM; Euler-Bernoulli-balkmodell;

    Abstract : A computational framework for linear static aeroelastic analyses is presented. The overall aeroelasticity model is applicable to conceptual aircraft design studies and other low-fidelity aero-structural analyses. A partitioned approach is used, i. e. READ MORE