In situ measurement of wave attractor induced forces

Abstract An underwater force sensor for internal waves is presented. Using this sensor, we measure forces at a location near the surface of fluid. The performs point measurement with high temporal resolution. We perform measurements in density-stratified fluid contained trapezoidal basin. By shaking basin longitudinally, gravity are generated. Controlling frequency which oscillates, these propagate toward wave attractor whose shape varies from complicated to rectangular. exerted by on plate that partially submerged into observe formation and decay attractors. When reflection our (relatively) strong forces. confirm findings simulations. an asymmetry direction force. This leads net could imply driving mean flow. Graphical