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How to define a 'free drainage' boundary condition?
Posted 2021年7月21日 GMT-4 17:46 Structural & Acoustics, Fluid & Heat, Geomechanics Version 5.3 0 Replies
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Hello, I work with the Richards's equation (Earth Science Module) and Linear elastic material (Solid Mechanics Module) to built a biot consolidation model. The soil colum is saturated and top boundary could be considered as soil-air interface. A tube was directly mounted onto the pedestal of the apparatus with drainage available on the top end, which would let the pore water is free to drain out and settlement develops continuously when an overload was imposed on the top end. In case of free outflow at soil-air interface, drainage will occur if the pressure head is larger than zero.
Could you tell me how to set an 'free drainage' boundary condition in the Rinchard's Equation interface? Should I define a inflow boundary on the top end?
Thank you very much, Hua
Hello Hua Hua
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