Experimental Study of an Axial Turbine for Wave Energy Conversion Kumud Kumar, Tapas K. Das , R. Srikanth, and Abdus Samad Abstract With the growing menace of increase in population and pollution, renew- able sources of energy are being preferred over the fast depleting fossil fuels. Ocean wave energy is one such form of renewable source with a huge potential all around the globe. Wave energy conversion (WEC) devices areused to harness the energy from ocean waves. An oscillating water column (OWC) is a WEC device, which uses an axial turbine to convert wave energy into useful electrical energy. The experimental setup designed and assembled at Wave Energy and Fluids Engineering Laboratory, IIT Madras tested the turbine subjected to bidirectional airflow. The objective of the preliminary experiment is to measure the rotational speed and pressure drop across the turbine. The variable parameters are stroke length and time period of the oscil- lating piston, which simulates different ocean wave conditions. A comparative study of the parameters is carried out and reported in this article. Keywords Wells turbine · Wave energy · Experimental study · OWC Nomenclature α Angle of attack (degree) F ax Axial force component (N) F tan Tangential force component (N) K. Kumar · T. K. Das (B ) · R. Srikanth · A. Samad Wave Energy and Fluids Engineering Lab, Ocean Engineering Department, IIT Madras, Chennai, India e-mail: mech.tapas@gmail.com K. Kumar e-mail: kumud142k@gmail.com R. Srikanth e-mail: srikanthrangisetty@gmail.com A. Samad e-mail: samad@iitm.ac.in © Springer Nature Singapore Pte Ltd. 2021 S. Vijayan et al. (eds.), Trends in Manufacturing and Engineering Management, Lecture Notes in Mechanical Engineering, https://doi.org/10.1007/978-981-15-4745-4_83 953