Utilities
A collection of small interactive tools for quick engineering calculations. Select a tool below to get started.
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Terminal velocity calculator
Compute the terminal velocity, Reynolds number and drag coefficient of a spherical particle under drag, buoyancy and gravity — with a choice of classical drag models.
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Minimum fluidization & bed expansion
Estimate the minimum fluidization velocity from hindered-drag correlations and visualize bed expansion versus superficial velocity.
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HPC job cost calculator
Convert a job's core count and duration in hours into its allocation cost in core-hours and core-years.
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DEM Rayleigh time & contact overlap
Compute the Rayleigh critical time for a DEM time step, and the maximum Hertzian contact overlap for a given impact velocity.
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Stokes number calculator
Compute a particle's relaxation time and its Stokes number relative to a characteristic flow time scale to assess how closely it follows the flow.