Major projects we're currently involved in:
- Cards Interface for NEM Energy
- LTM for NEM Special Products
- NDS for NEM Energy
- SIMPACT for Ghent University
Cards Interface
NEM Energy (www.nem.nl)
NEM is the globally leading company in the design and supply of steam generating equipment, like Heat Recovery Steam Generators (HRSGs).
Cards is an in-house developed software tool for the thermal/process design of HRSGs. Cards Interface is a Java application from which Cards can be launched and its output processed. A graphical representation of the input file is shown as well as an element tree and a text editor with syntax highlighting.
An interactive QT diagram and an HRSG viewer are included. Graphics can be exported to common formats. An automated PDF report generator is anticipated.
Hummeling Engineering conceived the concept of Cards Interface and is responsible for its implementation an support in Java.
NEM Life time Monitoring system — LTM
NEM Special Products (www.nem.nl)
The LTM system is an online fatigue damage estimator based on temperatures measured at critical HRSG components, as well as process conditions during start-up & shutdown cycles and will be supplied by NEM to their customers as part of the boiler.
Existing boilers can also benefit from the LTM system as its versatile design supports off-line analysis (advanced graphical trend analysis tool, report generator) to determine component fatigue usage.
Hummeling Engineering is responsible for the development & implementation of the calculations module and the analysis GUIs in Java™.
NEM Dynamic Simulation tool — NDS
NEM Energy (www.nem.nl)
NEM is the globally leading company in the design and supply of steam generating equipment, like Heat Recovery Steam Generators (HRSGs).
For HRSGs, dynamic simulations are performed to analyse: system integration; control optimisation; start-up and shutdown procedures, life-time analysis and reduction of emissions. With NDS, a simulation model with accompanying data structure is generated from the output of a steady-state application. NDS consists of an advanced Java user interface, with features including: simulation progress and control; data structure stored as M-file or MAT-file; Simulink modules library; use of previously stored simulation states; specialistic post-processors; plotting of logged parameter time-traces and automated PDF report generation.
Hummeling Engineering conceived the concept of NDS and is responsible for its implementation in MATLAB® Simulink®.
Stochastic model of the HIV epidemic — SIMPACT
Ghent University, Belgium
Modelling the impact of combination HIV prevention in a population with complex and heterogeneous sexual behaviour patterns is challenging. As the range of available prevention methods increases, compartmental models become unwieldy due to a rapid increase in the number of compartments they require. We present a novel class of stochastic simulation models of the roll-out and scaling up of multiple prevention methods and their interactions.
A stochastic model is developed for the HIV epidemic based on the modified next reaction method (mNRM) used in chemical physics. This method is extended to explicitly consider the series of events that happens to each individual, rather than to a random individual from a group of individuals. The algorithm determines the type and timing of the next event by representing the timing of all possible events as the first firing times of independent, inhomogeneous Poisson processes with internal times given by integrated hazard functions.
SIMPACT is currently running on the parallel high performance computing grid of UGent.
For more information, please refer to Wim Delva (MD, PhD): users.ugent.be/~wdelva.
Hummeling Engineering is responsible for the implementation of SIMPACT in MATLAB.
