## AIFlow Non-diagonal Fabric Variables

Extension of Elmer in computational glaciology
kate.hruby
Posts: 4
Joined: 09 Feb 2018, 23:27
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### AIFlow Non-diagonal Fabric Variables

Hello,

This question is regarding the a_12, a_23 and a_13 values (Fabric 3-5) in the AIFlow Solver. When needing to rotate, say, a single-maximum fabric not in an x, y, z plane into a single maximum in the x direction, does one input a single maximum fabric in the x direction, but with values in Fabrics 3-5 as well?

For example:
Fabric 1 = Real 0.998 !a2_11
Fabric 2 = Real 0.001 !a2_22
Fabric 3 = Real 0.66 !a2_12
Fabric 4 = Real 0.56 !a2_23
Fabric 5 = Real 0.49 !a2_13

Where the single maximum is hypothetically off the x-axis by 40˚, off the y-axis by 30˚ and off the z-axis by 50˚, thus making the fabric parameters
Fabric 3 = cos(40)*cos(30) = 0.66
Fabric 4 = cos(30)*cos(50) = 0.56
Fabric 5 = cos(40)*cos(50) = 0.49
according to the orientation tensor specified in Watson, 1965 and Woodcock, 1977. Is this a correct assumption for the use of the Fabric variables 3, 4 and 5?

Best,
Kate
gagliar
Posts: 70
Joined: 04 Sep 2009, 16:34
Location: LGGE - Grenoble
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Dear Kate,