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Table 2 Number of DUGKS cells, memory consumption (MByte) and computational time (hours) of different methods for flow around a circular cylinder with different Knudsen numbers

From: Adaptive partitioning-based discrete unified gas kinetic scheme for flows in all flow regimes

Kn

DUGKS

ADUGKS

Ratio

Cells (\(N_{D}\))

Memory (\(M_{D}\))

Time (\(T_{D}\))

Cells (\(N_{A}\))

Memory (\(M_{A}\))

Time (\(T_{A}\))

\({{N_{D} } \mathord{\left/ {\vphantom {{N_{D} } {N_{A} }}} \right. \kern-0pt} {N_{A} }}\)

\({{M_{A} } \mathord{\left/ {\vphantom {{M_{A} } {M_{D} }}} \right. \kern-0pt} {M_{D} }}\)

\({{T_{D} } \mathord{\left/ {\vphantom {{T_{D} } {T_{A} }}} \right. \kern-0pt} {T_{A} }}\)

0.1

3840

6568.2

6.638

3840

6558.2

6.865

1.000

1.000

0.967

0.01

3840

6568.2

9.993

3770

6505.7

10.293

1.019

0.990

0.971

0.001

5120

8755.9

27.186

2814

5297.3

22.496

1.819

0.605

1.208