Table 3  The DMD modes during the critical instability in the Vr = 1.025 case.

From: On Chinese space station: pioneering space experiments unraveling the hydrodynamic instability of annular thermocapillary convection

Mode

Wave number m

Frequency f (Hz)

Growth rates σ

Amplitude(℃)

Mode−1

3

0.054

7.47 × 10− 5

0.1634

Mode−2

3

0.054

3.00 × 10− 3

0.1296

Mode−3

6

0.108

1.78 × 10− 3

0.0335

Mode−4

6

0.108

3.11 × 10− 2

0.0147

Mode−5

4

0.048

1.25 × 10− 1

0.0153

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