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Lagrangian Trajectory Simulation of Rotating Regular Shaped Ice Particles

Widhalm, Markus (2015) Lagrangian Trajectory Simulation of Rotating Regular Shaped Ice Particles. SAE 2015 International Conference on Icing of Aircraft, Engines, and Structures, 22.-25. Juni 2015, Prag.

[img] PDF (15ICE-0100/2015-01-2141)


This paper focuses on the numerical simulation of the motion of regular shaped ice particles under the forces and torques generated by aerodynamic loading. Ice particles can occur during landing and take-off of aircraft at ground level up to the lower bound of the stratosphere at cruising altitude. It may be expected that the particle Reynolds number is high because the flow around the aircraft is in certain regions characterized by strong acceleration and deceleration of the flow. In combination with this flow pattern, the rotation of particles becomes important. Applicable translational and rotational equations of motion combined with a drag correlation taking into account rotation will be derived for a Lagrangian type particle tracking. Orientation is described with quaternions to prevent the singularities associated with the description by Euler angles. The influence of regular shaped particles on collection efficiencies is investigated. Test cases are the flow past a cylinder, a NACA0012 airfoil and a NHLP L1/T2 three element airfoil. Due to the increased computational effort compared to the purely translational approach, observed trajectory simulation times are reported.

Item URL in elib:https://elib.dlr.de/96999/
Document Type:Conference or Workshop Item (Speech)
Additional Information:HAIC - Projekt
Title:Lagrangian Trajectory Simulation of Rotating Regular Shaped Ice Particles
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Lagrangian, Rotation
Event Title:SAE 2015 International Conference on Icing of Aircraft, Engines, and Structures
Event Location:Prag
Event Type:international Conference
Event Dates:22.-25. Juni 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Air Transport Concepts and Operation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Widhalm, Markus
Deposited On:06 Jul 2015 10:36
Last Modified:20 Jun 2021 15:46

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