55 Comparison of every case with the baseline case of zero velocity of air and water tunnel will give the relative interface displacements. -2 1 L Interface I I Ipolyfit I I (I) W -2. - - - 2 - -I - - - - o I I-5 5 6 7 8 0 8 9 1 Ii c e I I I I igr 41 Poyoma fit ofodr5faeaeitraimae(etn corsodn slp of inefc (rgh) Th nex chpe wil sumrz ihcnlsosadas isthpoibefur -2.5vor reae totefaiiy