Software Development Projects


>> HRSG lifetime monitoring system — LTM

NEM logo

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).

LTM logo LTM process display Hummeling Engineering Trend Tool

The LTM system is an online fatigue damage estimator based on measurements 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.

TÜV SÜD logo

LTM software is certified by TÜV SÜD.

Download the NEM Special Products leaflet: Lifetime Monitoring Systems.

Hummeling Engineering is responsible for the development & implementation of the complete LTM system in Java™.


>> Flow-induced vibrations analysis — Vibes

NEM logo

NEM Energy (www.nem.nl)

With Vibes, engineers can analyse flow-induced vibration phenomena like vortex shedding, turbulent buffeting, and fluidelastic instability (whirling) that can manifest inside HRSGs due to gas turbine exhaust gases flowing past tube bundles.

Vibes main user interface Vibes graphics

The main interface shows the heat exchanger bundles with physical properties. Very little user input is required as all calculations are automated.

Annotated frequency graphs can be created and exported to image files for inclusion into a report.

Hummeling Engineering is responsible for its implementation in Java.


>> Steam vent silencer sizing tool — SVS

Aarding Thermal Acoustics logo

Aarding Thermal Acoustics (www.aarding.com)

Aarding Thermal Acoustics is the centre of competence of the gas division in the Ceco Environmental Group (www.cecoenviro.com).

Aarding Thermal Acoustics steam vent silencer sizing

SVS is a sizing tool for steam vent silencers, supplied by Aarding Thermal Acoustics to its customers. It supports multiple inlets, SI and Imperial units systems, and has side- and top-view graphics. Furthermore, it can generate a detailed PDF report with tables and graphics which can be sent as e-mail directly from the tool.

Hummeling Engineering is responsible for its implementation in Java.


>> ASME material properties — ASME

Hummeling Engineering ASME material properties Hummeling Engineering Nominal Pipe Sizes

Mechanical properties for all the materials from 2015 ASME Boiler and pressure vessel code, section II, part D (metric) as well as some code cases, e.g., SA-335 P92, can be retrieved from our Java library. Additional code cases are added as required.

Equipped with an intuitive graphical user interface, or GUI, mechanical properties can be obtained for a selected material, different materials can be compared for a selected property, either tabular or graphical. As an extra, the GUI also contains (metric) tables of nominal pipe sizes, or NPS, for wall thicknesses and plain end masses, according ASME B36.10M-2004 Welded and seamless wrought steel pipe.

Whereas the GUI shows the exact data as presented in above mentioned reference, arrays of interpolated values are created when a material is selected from source code. Temperature values are rounded to the nearest Kelvin value and used as an index into the requested material property array. This makes requests for temperature-dependent material properties, extremely fast, most important during simulations.

For quote requests or more information, contact sales: .


>> HRSG thermal/process design interface

NEM logo

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 interface Cards process diagram

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 and support in Java.


>> OPC DA and OPC HDA daemons

Self-tested Compliance

Our OPC DA and OPC HDA daemons conform to the specification posed by The OPC Foundation (opcfoundation.org) and collect data without any logged-in user. Data is stored in our highly efficient in-house developed signal format.

Signals can be analysed with our comprehensive Trend Tool (read more) and exported to netCDF-3, MATLAB, XLS, XLSX, and CSV.

For quote requests or more information, contact sales: .


>> HRSG dynamic simulation tool — NDS

NEM logo

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).

NDS logo NDS screens

For HRSGs, dynamic simulations are performed to analyse: system integration; control optimisation; start-up and shutdown procedures, lifetime 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 logo

Ghent University, Belgium

SIMPACT logo

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, see www.simpact.org.

Hummeling Engineering is responsible for the implementation of SIMPACT in MATLAB.

© 2009-2017 Hummeling Engineering BV — Trade Register of The Hague 57591113

MATLAB & Java professional