Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions

Michael Matthew Micci, Mark W. Crofton

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A hybrid finite element/molecular dynamics (FEM/MD) simulation was developed to simulate the collisions of micron sized aluminum particles with a nickel wall in a high-pressure liquid oxygen environment such as could be found in a liquid rocket engine. The finite element method was chosen in order to model full sized (100-500 micron diameter) aluminum particles. Molecular dynamics is used to accurately simulate the physics occurring at the contact point between the sphere and the wall: the collision dynamics, aluminum fracture and heating up, and subsequent initiation of aluminum-oxygen reactions on the surface of the sphere. The two simulation regimes are coupled by providing boundary conditions for each other. Initial results show the heating of the aluminum surface due to the collision of the aluminum particle with the wall at an impact velocity of 500 m/s.

Original languageEnglish (US)
StatePublished - Dec 1 2010
Event46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Nashville, TN, United States
Duration: Jul 25 2010Jul 28 2010

Other

Other46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
CountryUnited States
CityNashville, TN
Period7/25/107/28/10

Fingerprint

Molecular dynamics
Aluminum
Computer simulation
Heating
Oxygen
Rocket engines
Point contacts
Liquids
Physics
Nickel
Boundary conditions
Finite element method

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Control and Systems Engineering

Cite this

Micci, M. M., & Crofton, M. W. (2010). Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions. Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States.
Micci, Michael Matthew ; Crofton, Mark W. / Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions. Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States.
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Micci, MM & Crofton, MW 2010, 'Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions', Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States, 7/25/10 - 7/28/10.

Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions. / Micci, Michael Matthew; Crofton, Mark W.

2010. Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States.

Research output: Contribution to conferencePaper

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T1 - Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions

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AU - Crofton, Mark W.

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N2 - A hybrid finite element/molecular dynamics (FEM/MD) simulation was developed to simulate the collisions of micron sized aluminum particles with a nickel wall in a high-pressure liquid oxygen environment such as could be found in a liquid rocket engine. The finite element method was chosen in order to model full sized (100-500 micron diameter) aluminum particles. Molecular dynamics is used to accurately simulate the physics occurring at the contact point between the sphere and the wall: the collision dynamics, aluminum fracture and heating up, and subsequent initiation of aluminum-oxygen reactions on the surface of the sphere. The two simulation regimes are coupled by providing boundary conditions for each other. Initial results show the heating of the aluminum surface due to the collision of the aluminum particle with the wall at an impact velocity of 500 m/s.

AB - A hybrid finite element/molecular dynamics (FEM/MD) simulation was developed to simulate the collisions of micron sized aluminum particles with a nickel wall in a high-pressure liquid oxygen environment such as could be found in a liquid rocket engine. The finite element method was chosen in order to model full sized (100-500 micron diameter) aluminum particles. Molecular dynamics is used to accurately simulate the physics occurring at the contact point between the sphere and the wall: the collision dynamics, aluminum fracture and heating up, and subsequent initiation of aluminum-oxygen reactions on the surface of the sphere. The two simulation regimes are coupled by providing boundary conditions for each other. Initial results show the heating of the aluminum surface due to the collision of the aluminum particle with the wall at an impact velocity of 500 m/s.

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Micci MM, Crofton MW. Hybrid finite element/molecular dynamics simulations of aluminum particle wall collisions. 2010. Paper presented at 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, United States.