Physical Modeling

Before Mathematical Simulation was considered as accurate and fast enough, glass melting was studied by Physical Modelling using liquids and solids with similar properties at ambient temperature.

Still today, Physical Modeling, has its niche, especially when the process observed is a detailed and/or unknown one, such as flow visualization:

  • close to bubblers
  • at stirrers, and in colouring feeders in particular
  • close to the plunger
  • any type of forming


  • Very close to reality
  • In detail
  • Can be used for new processes (where Mathematical Simulations have not been used/proven yet)
  • Cost efficient

EXAMPLE: Physical Modeling of Drop Feeding

  • Measuring of shape of drop by picture analysis
  • Compare shapes of drops for different cases
  • Measuring head loss in feeding cell
  • Mixing efficiency of plunger by coloring tracer


Dead end of a spout

Glass flow in the feeder is sometimes very complicated. The physical model can disclose unknown flow pattern by coloring tracers.

Whole physical model of the pot furnace

A situation when glass is drained from pot furnace can be simulated by physical model. Model liquid shows in detail all entire process.

Design of regulation thorn for pot furnace

Regulation tool can be key point of the process. The model helps us to find best design.

Physical model of the mixing cell and flow visualization by the coloring tracer

Modeling of stirring by physical model answer questions about design, best position, direction of rotation and RPM of stirrers.

Further Information:

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