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Comparative numerical analysis of the flow pattern and performance of a foil in flapping and undulating oscillations
Abstract
Introduction
Materials and methods
Fluid--solid interaction problem
Governing equations of fluid
Simulation algorithm
Solver
Mesh construction
Boundary conditions
Mesh motion and correction techniques
Kinematics
Wake visualization
Forces, consumed power, and efficiency calculations
Validation, grid dependency study, and time step
Results and discussions
Instantaneous inline and transverse forces, and pitching moment
Time-averaged inline force
Consumed power
Efficiency
Wake structures and surface pressure coefficient
Conclusions
Appendixes
Appendix 1: Calculation of forces, powers, normalized coefficients, and efficiency
Appendix 2: Validation of solver and grid dependency study
Validation of solver
Grid dependency
References