A CFD-Based Methodology for Pressure-Drop Measurement Standardization of Perforated Plates in High-Reynolds-Number Pipe Flow
11th International Conference on Recent Advances in Air and Space Technologies, Conference Program, RAST 2026, İstanbul, Türkiye, 13 - 15 Mayıs 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672516
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: blockage correction, CFD, compressibility, perforated plate, pipe flow, pressure drop, Reynolds number
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
This paper investigates the standardization of pressure-drop measurement methodologies for perforated plates in internal pipe flows at Reynolds numbers between one hundred thousand and three million. Conventional in-pipe testing often suffers from parasitic circumferential blockage losses and upstream pressurization effects in mass-flow driven in-pipe configuration, which bias the true aerodynamic resistance of the plates. Through a highly resolved 3D Reynolds-Averaged Navier-Stokes (RANS) approach using the Realizable k-epsilon turbulence model, six round-hole perforated plate models varying in porosity and thickness-to-diameter ratio are analyzed. The numerical results demonstrate strong correlation with experimental continuous cold flow test data. The study highlights the necessity of isolating mounting blockage losses to establish intrinsic plate resistance. Furthermore, parametric analyses of local Mach numbers and density variations reveal that pressure sampling locations must be decoupled from near-field contraction and jet-decay regions. A Reynolds-invariant measurement standard is proposed, demonstrating that reliable and comparable pressure evaluations require taps to be located at least one hole-diameter upstream and five hole-diameters downstream of the perforated plate.