Year: 2015
Communications in Computational Physics, Vol. 17 (2015), Iss. 2 : pp. 564–593
Abstract
Currently, there exists a lack of confidence in the computational simulation of multiple body high-speed air delivered systems. Of particular interest is the ability to accurately predict the dispersion pattern of these systems under various deployment configurations. Classical engineering-level methods may not be able to predict these patterns with adequate confidence primarily due to accuracy errors attributable to reduced order modeling. In the current work, a new collision modeling capability has been developed to enable multiple-body proximate-flight simulation in the Loci/CHEM framework. This approach maintains high-fidelity aerodynamics and incorporates six degrees of freedom modeling with collision response, and is well-suited for simulation of a large number of projectiles. The proposed simulation system is intended to capture the strong interaction phase early in the projectile deployment, with subsequent transfer of projectile positions and flight states to the more economical engineering-level methods. Collisions between rigid bodies are modeled using an impulse-based approach with either an iterative propagation method or a simultaneous method. The latter is shown to be more accurate and robust for cases involving multiple simultaneous collisions as it eliminates the need to sort and resolve the collisions sequentially. The implementation of both the collision detection methodology and impact mechanics are described in detail with validation studies to demonstrate the efficiency and accuracy of the developed technologies. The studies chronologically detail the findings for simulating simple impacts and collisions between multiple bodies with aerodynamic interference effects.
You do not have full access to this article.
Already a Subscriber? Sign in as an individual or via your institution
Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/cicp.231113.290914a
Communications in Computational Physics, Vol. 17 (2015), Iss. 2 : pp. 564–593
Published online: 2015-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 30
-
Efficient Parallel Dynamic Overset Unstructured Grid for Flow Simulation with Moving Bodies
Tian, Shu-Ling | Xu, Ke | Xia, Jian | Chen, LongAIAA Journal, Vol. 61 (2023), Iss. 5 P.2135
https://doi.org/10.2514/1.J062579 [Citations: 2] -
Hybrid Discontinuous Galerkin and Finite Volume Method for Launch Environment Acoustics Prediction
Harris, Robert E. | Collins, Eric M. | Luke, Edward A. | Sescu, Adrian | Strutzenberg, Louise L. | West, Jeffrey S.AIAA Journal, Vol. 53 (2015), Iss. 11 P.3430
https://doi.org/10.2514/1.J053877 [Citations: 13] -
Unstructured continuum–kinetic solver with fluid–particle interaction for in-space propulsion contaminant dispersal
Harris, Robert E.
Journal of Computational Physics, Vol. 373 (2018), Iss. P.64
https://doi.org/10.1016/j.jcp.2018.06.054 [Citations: 3] -
Validation of Overset Discontinuous Galerkin and Hybrid RANS/LES Method for Jet Noise Prediction
Harris, Robert E. | Arslanbekov, Robert R. | Collins, Eric | Luke, Edward A.46th AIAA Fluid Dynamics Conference, (2016),
https://doi.org/10.2514/6.2016-3334 [Citations: 0] -
Approximate Discrete Adjoint Method for Parametric Sensitivity Analysis of Launch Vehicle Propulsion Systems
Gale, Manuel | Harris, Robert E. | Luke, Edward A.2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, (2018),
https://doi.org/10.2514/6.2018-1649 [Citations: 1] -
Hybrid Finite Volume and Discontinuous Galerkin Method with Dynamic Overset Noise Source Identification for Acoustics Prediction
Harris, Robert E. | Rivord, Travis A.2018 AIAA Aerospace Sciences Meeting, (2018),
https://doi.org/10.2514/6.2018-0518 [Citations: 0] -
Coupled Overset Unstructured Discontinuous Galerkin Method for Launch Environment Acoustics Prediction
Harris, Robert E. | Collins, Eric M. | Luke, Edward A. | Sescu, AdrianAIAA Journal, Vol. 54 (2016), Iss. 6 P.1932
https://doi.org/10.2514/1.J054563 [Citations: 9] -
Unstructured Continuum-Kinetic Solver with Fluid-Particle Interaction for In-Space Propulsion Contaminant Dispersal
Harris, Robert E.
48th AIAA Plasmadynamics and Lasers Conference, (2017),
https://doi.org/10.2514/6.2017-4015 [Citations: 0] -
Validation of Boltzmann discrete velocity method flow solver for diatomic gases and multi-component monatomic gas mixtures
Harris, Robert E. | Turansky, Craig P.AIAA Scitech 2020 Forum, (2020),
https://doi.org/10.2514/6.2020-2154 [Citations: 1] -
A numerical method for multi-body separation with collisions
Tian, Shuling | Fu, Jiawei | Chen, JiangtaoAerospace Science and Technology, Vol. 109 (2021), Iss. P.106426
https://doi.org/10.1016/j.ast.2020.106426 [Citations: 12] -
Coupled Overset Unstructured Discontinuous Galerkin Method for Jet Noise Prediction
Harris, Robert E. | Sescu, Adrian | Collins, Eric | Luke, Edward A.54th AIAA Aerospace Sciences Meeting, (2016),
https://doi.org/10.2514/6.2016-0762 [Citations: 4] -
Coupled Overset Unstructured Discontinuous Galerkin Method for Launch Environment Acoustics Prediction (Invited)
Harris, Robert E. | Collins, Eric | Luke, Edward A. | Sescu, Adrian21st AIAA/CEAS Aeroacoustics Conference, (2015),
https://doi.org/10.2514/6.2015-2538 [Citations: 3]