Executed Reduced-Order Screening and a Proposed High-Fidelity Verification Protocol for Flexible Vortex Generators in a Heated Turbulent Rectangular Channel

Abstract

While flexible vortex generators might enhance convective transport through the passive, unsteady near-wall mixing they impart, the structural shape of such features must be optimized for deformation, avoided failures, and minimized pressure-loss concurrently. This manuscript documents a multifidelity pre-screening and verification protocol for the heated turbulent rectangular channel of a wall-mounted flexible plate. The sample evidence includes direct space-time lower-fidelity analytical reference calculations, a reduced-order fluid–structure screening study of 720 cases, and a robustness analysis of 81 scenarios. Wet natural frequency, forcing proximity, static deflection, bounded dynamic amplitude, root stress and qualitative mixing and pressure indices swept over Reynolds number (Re), elastic modulus (E), thickness (t), inclination angle(θ) and length ratio as part of a screening model on the device. No, these indices are only used to rank candidate configurations; they are not predictions of Nusselt number, pressure drop or performance evaluation criterion. The following step is the specification of a seventeen-case three-dimensional ANSYS Fluent–Transient Structural–System Coupling matrix consisting of smooth-channel and rigid-generator controls, mesh/time/coupling studies and validation needs. This higher-ranked reduced-order candidate is thus recommended as a verification priority, rather than an optimal thermal-hydraulic configuration. In this manuscript, we present a route from generalizable, reproducible pre-screening to evidence-based CFD–FSI assessment with no unsupported device-performance claims.