Essays about: "COMSOL-flerfysik"

Found 2 essays containing the word COMSOL-flerfysik.

1. 1. Transient Voltage Distribution in Bushing

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Md Nazmus Shakib Khan; [2020]
   Keywords : Coaxial cable; Overvoltage transient; Power transformer bushing; Skin effect; Koaxialkabel; överspänningsövergående; transformatorgenomföring; hudeffekt;

   Abstract : An electrical bushing is one of the most important elements in a power transformer. Steep front surges such as transient impulse voltage from lightning strikes is an inevitable electromagnetic transient mostly happening in power transmission and distribution system. The bushing might lead to be degraded due to such kind of surge. READ MORE

3. 2. Modelling of Laser Welding of Aluminium using COMSOL Multiphysics

   University essay from KTH/Materialvetenskap

   Author : Jie Chen; [2020]
   Keywords : laser welding process; aluminium alloy; thermal-mechanical; COMSOL Multiphysics; hot cracking; thermal model; CFD model; mechanical model; Marangoni effect; lasersvetsningsprocess; aluminiumlegeringar; termisk-mekanisk; COMSOL-flerfysik; hetsprickning; termisk modell; CFD-modell; mekanisk modell; Marangoni-effekt;

   Abstract : This thesis presents a modelling approach of laser welding process of aluminium alloy from the thermo-mechanical point of view to evaluate the occurrence of hot cracking based on simulation results and relevant criteria. The model was created stepwise in COMSOL Multiphysics, starting with the thermal model where heat conduction of solid and liquid phase was computed. READ MORE