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Multiscale Lagrangian-Eulerian Algorithm for Determining the Vorticity…

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
Program Year/Program:
2014 / SBIR
Agency Tracking Number:
N132-092-0056
Solicitation Year:
2013
Solicitation Topic Code:
N132-092
Solicitation Number:
2013.2
Small Business Information
D & P LLC
3409 N. 42nd Pl. Phoenix, AZ -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2014
Title: Multiscale Lagrangian-Eulerian Algorithm for Determining the Vorticity Confinement Term for Rotorcraft Computational Fluid Dynamics (CFD) Computations
Agency / Branch: DOD / NAVY
Contract: N68335-14-C-0028
Award Amount: $79,991.00
 

Abstract:

This SBIR Phase I project proposes to develop a multi-scale computational algorithm to determine the vorticity confinement term for rotorcraft Computational Fluid Dynamics (CFD) computations. Similar to the Large Eddy Simulation approach, the proposed approach simulates the large scales in the flow field and models the unresolved small scales like the tip vortices in the computations. The large scales are simulated using the Eulerian approach while the unresolved small scales are modeled using the Lagrangian approach. The effects of the unresolved small scales are included into the governing equations as the Vorticity Confinement terms. As a result, one is able to perform a rotorcraft CFD computation on a regular CFD grid without excessive numerical diffusion of the tip vortices. A feasibility study will be performed during Phase I to demonstrate the validity of the proposed algorithm for preserving the rotor tip vortex structure. Only after the success of the Phase I feasibility study, it is meaningful to further refine and demonstrate the methodology in Phase II.

Principal Investigator:

Lei Tang
President
(480) 518-0981
tanglei@d-p-llc.com

Business Contact:

Lei Tang
President
(480) 518-0981
tanglei@d-p-llc.com
Small Business Information at Submission:

D & P LLC
3409 N. 42nd Pl. Phoenix, AZ -

EIN/Tax ID: 743185214
DUNS: N/A
Number of Employees:
Woman-Owned: Yes
Minority-Owned: Yes
HUBZone-Owned: No