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Table 3

Aggregate growth for different model settings.

Simulation ξa Growth limitb ΔtSt≲tdriftc Stmind Streaming instabilitye
0.1 μm 1 μm 0.1 μm 1 μm 0.1 μm 1 μm 0.1 μm 1 μm
Nominal 1 B D ✓ ✓ ✓ ✓ ✓ ✗
5 B D ✓ ✓ ✓ ✓ ✓ ✗
10 B D ✓ ✓ ✓ ✓ ✓ ✗
5 au 1 B B ✓ ✗ ✓ ✗ ✓ ✗
5 B B ✓ ✓ ✓ ✓ ✓ ✓
10 B B ✗ ✗ ✗ ✗ ✗ ✗
15 au 1 B D ✓ ✓ ✓ ✓ ✓ ✗
5 B D ✓ ✓ ✓ ✓ ✓ ✗
10 B D ✓ ✓ ✓ ✓ ✓ ✗
50 au 1 B D ✓ ✓ ✓ ✓ ✓ ✗
5 B D ✓ ✓ ✓ ✓ ✓ ✗
10 B D ✓ ✓ ✓ ✓ ✓ ✗
dSN 5 B D ✓ ✓ ✓ ✓ ✓ ✗
iS 5 B D ✓ ✓ ✓ ✓ ✓ ✗
nB* 5 F F … … ✓ ✓ ✓ ✓
α_10 5 B D ✓ ✓ ✓ ✓ ✓ ✗
αx10 5 B B ✓ ✗ ✓ ✗ ✓ ✗
Σg_2 5 B D ✓ ✓ ✓ ✓ ✓ ✗
Σgx2 5 B D ✓ ✓ ✓ ✓ ✓ ✗

Notes. The symbols indicate whether a criterion is fulfilled (✓) or not (✗), unless mentioned otherwise.

a

Dust-to-ice ratio.

b

Growth is drift limited (D), bouncing dominated (B), or fragmentation limited (F).

c

Compression is faster than radial drift of bouncing aggregates.

d

Aggregates reach Stmin.

e

Aggregates potentially trigger streaming instability, if (c) and (d) are fulfilled and growth is not drift limited.

*

Without bouncing, aggregates easily grow to Stmin, but further growth is limited by fragmentation.

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