Proceedings ArticleDOI
A High-Fidelity CFD/BEM Methodology For Launch Pad Acoustic Environment Prediction
TLDR
In this article, high-resolution CFD solutions are coupled with a non-dissipative acoustic Boundary Element Method (BEM) interfacing approach for identification of the noise sources and transformation of near-field noise signature to the acoustic solver.Abstract:
The high-intensity level acoustic load generated by large launch vehicle liftoff propulsion is of major concern for the integrity of the launch complex and the vehicle payloads. This paper presents a practically feasible and effective computational process addressing the physics of both the noise generation mechanism and its footprint in the complex launch pad environment. Highresolution CFD solutions are coupled with a non-dissipative acoustic Boundary Element Method (BEM). The CFD/BEM interfacing approach involves identification of the noise sources and transformation of near-field noise signature to the acoustic solver. This approach is benchmarked against free and impinging jet problems prior to realistic application to the launch vehicle lift-off scenario.read more
Citations
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Journal ArticleDOI
Computational framework for Launch, Ascent, and Vehicle Aerodynamics (LAVA)
Cetin C. Kiris,Jeffrey A. Housman,Michael F. Barad,Christoph Brehm,Emre Sozer,Shayan Moini-Yekta +5 more
TL;DR: The Launch Ascent and Vehicle Aerodynamics (LAVA) framework as mentioned in this paper is designed to be grid agnostic, i.e., it can handle block-structured Cartesian, generalized curvilinear overset and unstructured polyhedral grids either as stand-alone mode or by coupling different grid types through an overset interface.
Proceedings ArticleDOI
The LAVA Computational Fluid Dynamics Solver
Cetin C. Kiris,Michael F. Barad,Jeffrey A. Housman,Emre Sozer,Christoph Brehm,Shayan Moini-Yekta +5 more
Journal ArticleDOI
On the BEM for acoustic wave problems
Yijun Liu,Yijun Liu +1 more
TL;DR: The dual boundary integral equation (BIE) formulation pioneered by Burton and Miller is reviewed, treatment of the singular integrals involved in the BIEs, discretization considerations, and fast solution methods for solving the acoustic BEM equations are discussed.
Journal ArticleDOI
Acoustical Boundary Elements : Theory and Virtual Experiments
Rafael Piscoya,Martin Ochmann +1 more
TL;DR: The boundary element method (BEM) has been applied to a wide range of problems, such as the non-uniqueness problem as discussed by the authors, the boundary condition on the infinite plane, and the sound field in an ultrasonic homogenizer.
References
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