Journal
AIAA JOURNAL
Volume 60, Issue 10, Pages 5854-5867Publisher
AMER INST AERONAUTICS ASTRONAUTICS
DOI: 10.2514/1.J061774
Keywords
-
Categories
Funding
- U.S. Air Force Research Laboratory [FA8650-21-D-2401, FA8650-21-F-2405]
- Innovative Scientific Solutions, Inc. [SB20265]
Ask authors/readers for more resources
This study develops a technique to optimize the location and orientation of multiple laser beams for mass flow sensing in a 3D flow path geometry, with the aim of minimizing uncertainty in estimates and maximizing confidence in mass flow rate estimates. Tomographic reconstruction is not required for this technique.
Multibeam tunable diode laser absorption spectroscopy (TDLAS) sensors are used to measure mass flow in a complex, inhomogeneous flowfield with limited optical access. The cost and complexity of a TDLAS array increases with the number of beams, but adding beams does not necessarily improve accuracy. A technique to optimize the location and orientation of multiple laser beams for mass flow sensing in a 3D flow path geometry is developed and presented. We devised a statistical objective function that minimizes the uncertainty of estimates using a novel, linear formulation of absorption tomography with velocimetry (LATV). Beam arrangements that minimize the uncertainty of LATV reconstructions consequently maximize confidence in mass flow rate estimates; such arrangements are identified, subject to physical constraints on the pitch and catch optics. Our metric provides general guidance for the arrangement of a multibeam TDLAS mass flow sensor and does not require the use of tomographic reconstruction.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available