A practical wave flume layout to test reflective models without any need for an active absorption system

Introducing a new flume layout with bottom-mounted wavemaker in the presence of fully reflective model, this paper investigates how it could be effectively utilized to eliminate different source of wave reflections. Compared with common type wave makers, bottom-mounted wavemakers could effectively eliminate wave re-reflections from the wavemaker. This paper uses analytical solution based on velocity potential to derive wave propagation for steady state excitation, where the results is verified by ANSYS CFX. It is shown that using the proposed layout it is possible, (a) to diminish the disturbing effect of re-reflection of progressive waves from the wavemaker and also to remove the possibility of resonance, and (b) to decrease the distance from the wavemaker to the absorbing beach, which results in the shorter flume length. These finding show that using the proposed layout, there is no need to use active absorbing wavemaker.