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<p>Vortex-induced vibration (VIV) of cylindrical members remains a persistent reliability concern for offshore energy structures, including risers, mooring lines, and subsea pipelines. This work reports an experimental assessment of additively manufactured passive wake-control attachments for VIV suppression of an elastically mounted circular cylinder in a recirculating water-channel facility, coupled with an embedded sensing architecture for real-time response tracking. Three device configurations—a connected V-tail, a disconnected V-tail with a controlled gap, and a U-shaped fairing—were fabricated using fused deposition modeling and benchmarked against a bare-cylinder baseline over reduced velocities of 1.5–9 (Re ≈ 2.5 × 103–1.5 × 104). Under classical lock-in conditions the bare cylinder displayed a peak normalized amplitude of approximately 1.12 at a reduced velocity of 5.4; all attachments disrupted wake/structure synchronization with the disconnected V-tail providing the largest reduction (up to 92% reduction in vibration amplitude) and further substantial reductions in the energy (as determined by RMS acceleration and spectral metrics) of the vibration. These wake-stabilizing geometries, including the disconnected V-tail configuration, were previously introduced and analyzed numerically in prior work; the present contribution is their experimental validation and comparative assessment under elastically mounted, low mass–damping conditions, together with a demonstration of embedded low-cost MEMS sensing for VIV monitoring, rather than a fundamentally new suppression paradigm. In addition to suppression performance, the perspective of these devices is presented as lightweight, corrosion-resistant and rapidly customizable additively manufactured components (for smart manufacturing workflows). A data-driven monitoring perspective is established by organizing sensor-derived features (RMS, dominant frequency, spectral peak attenuation and phase-space compactness) into a practical method for condition monitoring of energy assets in marine environments. The resultant combination of the advanced manufacturing of engineered attachments with the embedded sensing of them; and the analytics-ready responses are presented as solutions for scalable VIV mitigation and reliability management of marine energy infrastructure. The results of the study demonstrate the viability of additively manufactured wake-control devices in combination with embedded sensing architectures as scalable "smart" structural components for both vibration mitigation and structural health monitoring of offshore energy infrastructure.</p>

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Additively manufactured wake-stabilizing devices with embedded monitoring for vortex-induced vibration suppression in offshore energy structures

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年8月5日

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  • Amit Jomde,
  • Ganesh Jadhav,
  • Prathmesh Gumaste,
  • Ajinkya Pawar,
  • Pralhad Tipole,
  • Rahul Thakur,
  • Jatin Kumar Chaudhary,
  • Rakesh Sidheshware

摘要

Vortex-induced vibration (VIV) of cylindrical members remains a persistent reliability concern for offshore energy structures, including risers, mooring lines, and subsea pipelines. This work reports an experimental assessment of additively manufactured passive wake-control attachments for VIV suppression of an elastically mounted circular cylinder in a recirculating water-channel facility, coupled with an embedded sensing architecture for real-time response tracking. Three device configurations—a connected V-tail, a disconnected V-tail with a controlled gap, and a U-shaped fairing—were fabricated using fused deposition modeling and benchmarked against a bare-cylinder baseline over reduced velocities of 1.5–9 (Re ≈ 2.5 × 103–1.5 × 104). Under classical lock-in conditions the bare cylinder displayed a peak normalized amplitude of approximately 1.12 at a reduced velocity of 5.4; all attachments disrupted wake/structure synchronization with the disconnected V-tail providing the largest reduction (up to 92% reduction in vibration amplitude) and further substantial reductions in the energy (as determined by RMS acceleration and spectral metrics) of the vibration. These wake-stabilizing geometries, including the disconnected V-tail configuration, were previously introduced and analyzed numerically in prior work; the present contribution is their experimental validation and comparative assessment under elastically mounted, low mass–damping conditions, together with a demonstration of embedded low-cost MEMS sensing for VIV monitoring, rather than a fundamentally new suppression paradigm. In addition to suppression performance, the perspective of these devices is presented as lightweight, corrosion-resistant and rapidly customizable additively manufactured components (for smart manufacturing workflows). A data-driven monitoring perspective is established by organizing sensor-derived features (RMS, dominant frequency, spectral peak attenuation and phase-space compactness) into a practical method for condition monitoring of energy assets in marine environments. The resultant combination of the advanced manufacturing of engineered attachments with the embedded sensing of them; and the analytics-ready responses are presented as solutions for scalable VIV mitigation and reliability management of marine energy infrastructure. The results of the study demonstrate the viability of additively manufactured wake-control devices in combination with embedded sensing architectures as scalable "smart" structural components for both vibration mitigation and structural health monitoring of offshore energy infrastructure.