7.2 Wall Structure Optimization
445
a
b
Fig. 7.2 The wall structure of HTR-10 reactor: a Normal bed; b Modified bed with triangular wall
structures
Table 7.1 Parameters used in simulation
Dimension of normal bed D x × D y × D z (mm)
800 × 1200 × 12.5
Diameter of the discharging hole D out (mm)
120
Base cone angle θ ◦
30
Pebble diameter d p (mm)
12
Pebble number N p (mm)
4224
Pebble density ρ p (kg/m 3 )
964
Pebble friction coefficient μ p
0.5
Pebble restitution coefficient e p
0.95
Pebble Young’s modulus E p
6 × 10 8
Pebble Poisson rate ν p
0.35
Wall friction coefficient μ w
0.5
Wall Young’s modulus E w
10 10
Wall Poisson rate ν w
0.23
Time step δt (s)
5 × 10 −5
Total simulated time t T (s)
300 or 150
Circulating rate of pebbles r c (s −1 )
20 or 40
445
a
b
Fig. 7.2 The wall structure of HTR-10 reactor: a Normal bed; b Modified bed with triangular wall
structures
Table 7.1 Parameters used in simulation
Dimension of normal bed D x × D y × D z (mm)
800 × 1200 × 12.5
Diameter of the discharging hole D out (mm)
120
Base cone angle θ ◦
30
Pebble diameter d p (mm)
12
Pebble number N p (mm)
4224
Pebble density ρ p (kg/m 3 )
964
Pebble friction coefficient μ p
0.5
Pebble restitution coefficient e p
0.95
Pebble Young’s modulus E p
6 × 10 8
Pebble Poisson rate ν p
0.35
Wall friction coefficient μ w
0.5
Wall Young’s modulus E w
10 10
Wall Poisson rate ν w
0.23
Time step δt (s)
5 × 10 −5
Total simulated time t T (s)
300 or 150
Circulating rate of pebbles r c (s −1 )
20 or 40