Parallel aeroacoustic computation of unsteady transonic weapon bay using detached‐eddy simulation via open computational fluid dynamics source codes

Abstract

SummaryCavity flow research has been ongoing experimentally since the 1940s, especially for weapon bay use in fighter aircraft. Technology advancement has led to the beginning of simulations of experimental studies. The success of these simulations has increased with the emergence of High‐Performance Clusters, and simulation studies have started to take the role of experimental studies. In this paper, an open rectangular, unsteady transonic cavity with a length to depth ratio of 5, Mach number 0.85 and Reynolds number of approximately 6.5 × 106 is simulated using Computational Fluid Dynamics (CFD) on a High‐Performance Cluster. Likewise, cavity door is used to model a real weapon bay. Detached‐Eddy Simulation is used to resolve turbulent properties in the flow domain. Results compatible with experimental data are obtained with OpenFOAM, an open‐source CFD code based on the finite volume method. Additionally, computational costs are given in the clock‐time analysis section, and the necessity of high‐performance clusters for CFD and Computational Aeroacoustics studies is emphasized.

Special issue on High‐Performance Computing Conference (BASARIM 2022)

“…Fadıl and Zafer 9 take a leap forward in the field of aeroacoustics computation by using parallel computing and open‐source computational fluid dynamics source codes. The researchers focused on studying the unsteady transonic weapon bay, a crucial component in fighter aircraft.…”

Transoni̇k Kavi̇te Akişinin Açik Kaynakli Hesaplamali Aeroakusti̇k Anali̇zi̇

“…Son yıllarda açık kaynaklı hesaplamalı akışkanlar dinamiği (HAD) yazılımı olan OpenFOAM (Greenshields, 2018) ile M 219 kavitenin kapaklı ve kapaksız incelemeleri yapılmıştır ve bu incelemelerde Large -Eddy Simulation (LES) modelinin kEqn ve dynamicKEqn ağ-altı ölçek (SGS) modelleri ve Detached -Eddy Simulation (DES) türbülans modelinin hem Spalart-Allmaras tabanlı hem SST k-ω tabanlı Delayed Detached -Eddy Simulation (DDES), Improved Delayed Detached -Eddy Simulation (IDDES) uygulamaları ile transonik koşullarda makul düzeyde sonuçlar alınmıştır (Fadıl & Zafer, 2022a, 2022b. Demir ve diğerleri tarafından 2021 yılında yapılan çalışmada M 219 kavite çeşitli pasif kontrol metotları kullanılarak OpenFOAM ile incelenmiştir.…”

“…Açık kaynaklı OpenFOAM yazılımı ile transonik koşullarda M 219 kavite için yürütülen bir diğer çalışmada ise Rossiter modları hem kapaklı hem kapaksız durumlar için başarılı şekilde yakalanmıştır. Buna ek olarak arka duvar bölgesindeki yüksek basınç salınımları iki durum için de gösterilmiştir (Fadıl & Zafer, 2023).…”