corrected some of the eqns for solid-fluid coupling - still looking at this - also simplified the solids coupling bit using backward Euler
corrected some of the eqns for solid-fluid coupling - still looking at this - also simplified the solids coupling bit using backward Euler
FluidityProject/multifluids,FluidityProject/multifluids,FluidityProject/multifluids,FluidityProject/multifluids