Disruption Analysis of PP, VV, and Components
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Transcript of Disruption Analysis of PP, VV, and Components
Disruption Analysis of PP, VV, and Components
Summary:
1.Plasma shape from square to close to circular2.Benchmark again Hatcher’s 2D model results3.EM and structural analysis for P1-P5 Slow VDE
1. Plasma shape has some but limited impact 2. Agree well with Hatcher results if same
conductivity used3. P1-P5 Slow VDE
1. Peak disruption loads2. Linearized stress on primary plate
1. Membrane ~40 MPa2. Membrane+bending ~60 MPa
3. Linearized stress on secondary plate should be smaller
Electrical conductivity - Zhai
Eddy Current Centered Disruption – 60 Degree Model
Skin depth of conductivity - 8.207x105 (LPP used in Hatcher) at 1 ms disruption is 18 mm but 57 mm at 10 ms VDE
upper primary PP 8.387x105
upper secondary PP 6.113x105
lower primary PP 8.207x105
lower secondary PP 6.668x105
VV 1.389x106 (SS)
CS Casing 7.576x106
Electrical conductivity - Hatcher
Conductivity (S/m) Skin depth (1 ms)
Passive Plate 5.07x107 (85% Cu) 2.25 mm
Bracket 1.389x106 (SS) 13.7 mm
VV 1.389x106 (SS) 13.7 mm
CS Casing 0.7576x106 (SS) 13.7 mm
3
5731018
10207.81014.341014.3
112
f
Skin depth is ~3 times thicker for 10 ms VDE
Br from Hatcher during P1-P5 slow VDE at 10 ms
Radial Field from Cyclic Symmetric Model – P1-P5 Slow VDE
Br from Zhai during P1-P5 slow VDE at 10 ms
Same conductivities of PPs used as in Hatcher
Very close agreement
Vertical Field from Cyclic Symmetric Model – P1-P5 Slow VDE
Same conductivities of PPs used as in Hatcher
Bz from Hatcher during P1-P5 slow VDE at 10 ms Bz from Zhai during P1-P5 slow VDE at 10 ms
Very close agreement
Eddy current at end of disruption
Same conductivities of PPs used as in Hatcher
Conductivity – 85% copper
Radial Field from Cyclic Symmetric Model – P1-P5 Slow VDE
Conductivity – 85% copper for plates with gaps using Hatcher conductivity
Vertical Field from Cyclic Symmetric Model – P1-P5 Slow VDE
Same conductivities of PPs used as in Hatcher
Conductivity – 85% copper
Conductivity – 85% copper for plates with gaps using Hatcher conductivity
P1 to P5 Slow VDE – Eddy Current at 10 ms
1/2 “ Plate P1 to P5 Slow VDE – Net Current and EM Loads
-30
-20
-10
0
10
20
30
40
50
60
70
0 0.01 0.02 0.03 0.04 0.05 0.06
Forc
e (k
N)
Time (s)
Disruption Forces on 1/2" PPPs - P1-P5 Slow
Radial
Toroidal
Vertical
-25
-20
-15
-10
-5
0
0 0.01 0.02 0.03 0.04 0.05 0.06
Mom
ent (
kNm
)
Time (s)
Disruption Moments on 1/2" PPPs - P1-P5 Slow
Radial
Toroidal
Vertical
-100
-80
-60
-40
-20
0
20
40
60
0 0.01 0.02 0.03 0.04 0.05 0.06
Toro
idal
cur
rent
(kA
)
Time, s
Toroidal current during disruption
LPP
LSP
-100
-80
-60
-40
-20
0
20
40
60
0 0.01 0.02 0.03 0.04 0.05 0.06
Toro
idal
cur
rent
(kA
)
Time, s
Toroidal current during disruption
LPP
LSP
New Model Previous Model
OPERA to ANSYS Load Mapping
Deflection of Lower Primary Plate at 10 ms under Peak Disruption Loads
Stresses on Lower Primary Plate at 10 ms (Peak Disruption Loads)
Linearized Stresses:
Membrane ~40 MPa
Mem+Bend~60 MPa
Sm for CuCrZr ~170 MPa
Disruption Analysis of PP, VV, and Components
-30
-20
-10
0
10
20
30
40
50
60
0 0.01 0.02 0.03 0.04 0.05 0.06
Forc
e (k
N)
Time (s)
Disruption Forces on 1/2" SPP P1-P5 Slow
Radial
Toroidal
Vertical
-8
-6
-4
-2
0
2
4
6
8
10
12
0 0.01 0.02 0.03 0.04 0.05 0.06
Mom
ent (
kNm
)
Time (s)
Disruption Moments on 1/2" SPP P1-P5 Slow
Radial
Toroidal
Vertical