ADDITIVELY MANUFACTURED INSTRUMENTATION FOR ENHANCED FLOWFIELD MEASUREMENT IN A TRANSONIC AXIAL COMPRESSOR
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Authors
Bliss, Keith A.
Subjects
transonic
compressor
fluids
computational
fluid
dynamics
additive
manufacturing
3D
printing
pressure
laser
doppler
anemometry
velocimetry
transient
flowfield
flow
field
temperature
stagnation
stall
rotor
casing
treatment
turbine
turbomachine
turbomachinery
turbo
machine
machinery
static
experimental
throttle
choke
efficiency
instrument
instrumentation
probe
rake
total
port
inlet
mass
flow
direct
metal
laser
sintering
powder
bed
fusion
Kiel
compressor
fluids
computational
fluid
dynamics
additive
manufacturing
3D
printing
pressure
laser
doppler
anemometry
velocimetry
transient
flowfield
flow
field
temperature
stagnation
stall
rotor
casing
treatment
turbine
turbomachine
turbomachinery
turbo
machine
machinery
static
experimental
throttle
choke
efficiency
instrument
instrumentation
probe
rake
total
port
inlet
mass
flow
direct
metal
laser
sintering
powder
bed
fusion
Kiel
Advisors
Hobson, Garth V.
Smith, Walter C.
Date of Issue
2024-06
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
This research explored the design of additively manufactured instrumentation for stagnation pressure and temperature measurement in the Naval Postgraduate School's Transonic Compressor Rig (TCR), aiming to match the performance of existing instruments with application-specific design. A method was also developed for integrating Laser Doppler Anemometry (LDA) measurement in the TCR. Probes were designed via SolidWorks scripting and simulated in Computational Fluid Dynamics (CFD) to predict measurement bias and accuracy at various yaw angles. Wind tunnel testing of the pressure probe compared measurements against LDA and existing data. CFD simulation confirmed valid measurements for yaw angles up to 30 degrees, while wind tunnel tests showed accurate measurements only up to 17.5 degrees with a demonstrated measurement bias of 0.5 m/s. The temperature probe's initial print failed due to high geometric resolution, necessitating redesign. Despite this, CFD simulations suggested robust performance with a measurement bias under 1 Kelvin. Future work will involve the installation of the instrumentation ring and LDA inserts for further testing on the TCR. Installation-grade pressure probes should be procured from external manufacturers that match the quality of the in-house test article. Additionally, further research should experimentally test a temperature probe to validate CFD results and encourage design refinement.
Type
Thesis
Description
Includes Supplementary Material
Series/Report No
Organization
Identifiers
NPS Report Number
Sponsors
ONR Code 35, DC
Funder
Format
Citation
Distribution Statement
Distribution Statement A. Approved for public release: Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.