627 citations · 7.4k across the 82 of their papers we have counts for
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Monte Carlo simulation of particle interactions at high dynamic range: Advancing beyond the Googol
C. W. Ormel, M. Spaans
We present a method which extends Monte Carlo studies to situations that require a large dynamic range in particle number. The underlying idea is that, in order to calculate the co…
Co-Accretion of Chondrules and Dust in the Solar Nebula
C. W. Ormel, J. N. Cuzzi, A. G. G. M. Tielens
We present a mechanism for chondrules to stick together by means of compaction of a porous dust rim they sweep up as they move through the dusty nebula gas. It is shown that dust a…
Closed-form expressions for particle relative velocities induced by turbulence
C. W. Ormel, J. N. Cuzzi
In this note we present complete, closed-form expressions for random relative velocities between colliding particles of arbitrary size in nebula turbulence. These results are exact…
Dust coagulation in protoplanetary disks: porosity matters
C. W. Ormel, M. Spaans, A. G. G. M. Tielens
Context: Sticking of colliding dust particles through van der Waals forces is the first stage in the grain growth process in protoplanetary disks, eventually leading to the formati…
The Modelling of InfraRed Dark Clouds
C. W. Ormel, R. F. Shipman, V. Ossenkopf +1
This paper presents results from modelling 450 micron and 850 micron continuum and HCO+ line observations of three distinct cores of an infrared dark cloud (IRDC) directed toward t…