ModellingTNO Glass Group

1

• Modelling_at_TNO Glass Group
• Peter Paul van t Veen
• Luuk Thielen, Dries Hegen, Philip Simons,
• Adriaan Lankhorst, Andries Habraken

2
Overview

• Modelling tools of TNO Glass Group
• Current developments
• Collaborations

3
X-stream General purpose CFD code

• Turbulence
• Combustion, soot, NOx
• Radiation (Rosseland DOM)
• 3D 1D walls
• Particle trace
• Several boundary conditions

• Time transient
• Steady state
• Body-fitted
• Multi-domain
• Structured/collocated
• Parallel
• Up to date solvers

4
Additional tools

• Rapid Combustion Model (RCM)
• X-GUI general pre/post-processor (license from
  TNO Diana BV)
• QuickViewX rapid dedicated visualization tool

5
GTM-X consortium

• Developments within GTM-X consortium program
• Improved (dynamic) modeling of foam growth
• Tracing of bubbles in glass melt (bubbles can be
  source of glass defects)
• Better quality indices for particle tracing
  (post-process step to analyze performance of
  melting process and quality of produced glass)

6
Further developments at TNO

• Oil combustion (tracing and evaporation of oil
  droplets)
• Spectral radiation model (Wide-Band-Correlated-k
  for combustion gas, band-model for glass)
• Calculate gas properties (like viscosity,density)
  from rigoreus kinetic theory of dilute gases
  (Chapman-Enskog theory)

7
Electrical boosting model

• Control grouped electrodes for consistent power
  release (also for complex electrode groupings and
  transformer systems)
• Improved model also conserves electrical currents
  per electrode group (additional constraint)

Vertical velocity between electrodes former model
Vertical velocity between electrodes new model
8
Further development DSMC at TNO

• Current developments
• Moving blade to model turbomolecular pumps
• Improved algorithm for following molecules (DSMC
  method is based on following particles and
  tracking collisions between particles)

9
Collaboration combustion

• Multi-scale physics_at_TU Delft Prof. Roekaerts
• Use of FLAME-code to generate look-up tables (to
  model combustion in combustion space of glass
  tank)
• Development of improved CO-combustion model
• STW program clean combustion concepts
• STW project on multi-burner excess enthalpy
  combustion system (MEEC) for industrial process
  furnaces
• Industrial application
• Reduction of NOx emissions from glass furnaces,
  for instance by
• changing to oxy-boosting, different burners or
  different combustion
• space geometry
• PhD/Postdoc
• Edwin Knobbe, Nijso Beishuizen (08), Ernst
  Oldenhof, Bart Danon

10
Collaboration DSMC

• Multi-scale physics_at_TU Delft Prof. Kleijn
• Couple Navier-Stokes solution to DSMC solution
  (to model both continuum and transitional/rarefied
  flows within one domain)
• Implement compressible flow solver
• Complex surface and gas phase chemistry models
• Industrial application
• Control of contamination in high-precision
• manufacturing machines (operating at low
  pressures)
• PhD/PostDoc
• Ruurd Dorsman (07), Gianandrea Abbate, Federico
  La Torre

11
Collaboration efficient solvers

• Numerical Analysis_at_TU Delft Prof. Vuik
• Efficient solvers for stiff systems (CVD
  chemistry)
• Improved domain decomposition methods (Krylov
  Schwarz method with deflation acceleration
  technique)
• Industrial application
• Coupled solution of complex chemistry,
  flow/energy problems
• PhD/PostDoc
• Sander van Veldhuizen, Ibrahim Daud

12
Collaboration Model Predictive Control

• Control Systems_at_TU Eindhoven Prof. Backx
• Control Systems_at_TU Delft Prof. Van den Hof
• Model reduction
• Model based predictive control
• ProMatch project EC funded
• STW-project Model reduction and control design
  for large-scale dynamical systems
• Industrial application
• rMPC (rapid Model Predictive Control) to controll
  the glass melting
• furnace process, leading to reduced operating
  costs
• PhD/Postdoc
• Patricia Astrid (04), Leo Huisman (05),
• Robert Bos (06), Reinout Romijn,
• Satyajit Wattamwar

13
Summary

• X-stream is a flexible multi-physics code for
  niche applications
• At TNO this code is further developed for
• glass melting furnaces (GTM-X)
• gas phase deposition processes (CVD-X)
• contamination and transport in vacuumsystems
  (DSMC)
• The close co-operation between TNO and TU's has
  led to several important improvements and
  extensions of X-stream

14
Thank you for your attention