electrodynamic zero-net mass-flux (ZNMF) actuator for flow control applications. The electrodynamic actuation schemeemploysamagneticassemblytoestablisharadialmagnetic fieldpatternwithanimbeddedcurrent-carrying coil winding. The coil is attached to a composite diaphragm having a rigid center boss and compliant outer annular region. The magnetic field acting on the coil assembly is modeled using a one-dimensional magnetic circuit. The composite diaphragm is modeled as a transversely isotropic, annular clamped plate. An overall lumped-element electromechanical system model is obtained by combining previously developed lumped models of the cavity/neck structures with lumped models for the composite diaphragm and electrodynamic actuation. The complete lumpedelement model is used to provide insight regarding performance characteristics and design limitations. The model is validated over a frequency range of 10–1000 Hz with hotwire anemometry measurements for both slot and orifice configurations for the jet. The model is useful as a design tool for electrodynamic ZNMF actuators. Nomenclature Amagnet = cross-sectional area of the permanent magnet, m 2 a = outer radius of the diaphragm, m aorif = axisymmetric orifice radius, m Bavg = average magnetic flux density acting on the coil placed in the magnetic assembly, T Bgap = magnetic flux density in the magnet gap predicted by magnetic circuit, T Br = remnant magnetic flux density of the permanent magnet, T b = inner radius of the compliant part of the diaphragm or the radius of the center boss, m CaC = acoustic compliance of the cavity, m 5 =N CaD = acoustic compliance of the diaphragm, m 5 =N CmD = mechanical compliance of the diaphragm, m=N c0 = speed of sound in air, m=s dC = diameter of the cavity, m dslot = diameter of the rectangular slot, m dT = overall diameter of the ZNMF actuator, m Ememb = Young’s modulus of the material of the compliant region of the diaphragm, Pa fN = undamped natural frequency of the diaphragm, Hz fr = steady-state resonant frequency of the diaphragm, Hz f1 = lower 3 dB cutoff frequency, Hz