A theoretical approach towards digital twins: A balance between an empirical and a fundamental model for distribution transformers

The energy transition will significantly impact distribution transformers as they will have to deal with more load on them, which is also more variable due to renewable energy sources. However, currently, these transformers are often not monitored with sensors. Therefore, the Dutch network operator Stedin asked to investigate the possibilities...

Coupled Time Integration and Globalised Newton's method for Faster Solution of Chemical Reactor Networks

In the present era of environment-friendly and clean combustion systems, there is an increasing demand for fast and accurate tools for emission predictions. The best choice is the CFD-CRN method which is a combination of computational fluid dynamics (CFD) and chemical reactor network (CRN) for decoupled simulation of fluid flow and detailed...

Time-Adaptive Grid Hydrological Solver Using PETSc

A high-resolution hydrological solver that solves on time-adaptive grids is created. The solver uses h-refinement strategies which adapts the resolution of the grid using a posteriori measure. It is based on an open-source scientific computing library named PETSc. With the use of highly scalable time-stepping solvers provided by PETSc, an...

Vapors Transport in the Anode Baking Process

Anode baking is a huge part of the Aluminum industry. The quality and characteristics of the anode blocks will be formed in the anode baking furnaces. The process itself is very expensive, time consuming and ecologically unfriendly. From the other hand, anode baking process can use its own waste as a secondary fuel source. Here, by waste we mean...

A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems

The calculation of power flow through electrical networks has been utilized commonly in transmission networks as the first calculation tool to assess their steady state conditions. However, the current introduction of renewable micro-sources (many of them single-phase connected) and the implementation of microgrids makes the calculation of power...

Modeling Non-Premixed Turbulent Combustion in Industrial Cement Kiln: Application in OpenFoam

In this master thesis a CFD model targetting the combustion in cement kilns is developed. The model is implemented in OpenFoam

Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces

Measuring the temperature distribution inside the rotary kilns, using thermocouples for instance has proven to be difficult due to the harsh operating conditions of the kiln. Numerical modelling of turbulent combustion and the associated physical phenomenon thus proves to be an indispensable tool towards predicting the kiln operating conditions....

Numerical Modeling of Granular Beds in Rotary Kilns

In process engineering applications numerical models are needed to make extensive analysis for the design and operation of unit operations. In the present work, a transversal granular flow model and two numerical models for the description of the granular bed of a rotary kiln are developed for the analysis of a Calcium Aluminate rotary kiln from...

Inductive Power Transfer through Metal Object

The principle of Inductive Power Transfer (IPT) is very old but it is rarely used for transferring power from source to load via a medium. This is because normally the medium restricts the power transfer due to losses or the shielding effects. However, for low energy applications, an acceptable amount of power could be transferred from the...