Materials

α (min⁻¹)

f_m (%)

λ (cm)

Ts (min)

T_M (min)

T_α (min)

σ (min)

R (−)

Sand

3.72 × 10⁻⁴

71

0.66

44.71

36.50

190

37.31

0.98

Bimodal B₁

3.45 × 10⁻⁴

57

1

54.62

27.40

249

39.20

0.97

Bimodal B₂

3.70 × 10⁻⁴

69

0.69

49.83

34.20

189

37.35

0.98