Development of a Multi-GHz Sampling Capability at the University of Maine UHF Test Facility

2001 ◽  
Author(s):  
Donald M. Hummels ◽  
Fred Irons
Keyword(s):  
Test Facility ◽  
The University

scholarly journals Hygrothermal performance of highly insulated wood frame walls with air leakage: field measurements and simulations.

2021 ◽  
Author(s):  
Michael J Fox
Keyword(s):  
Simulation Models ◽  
Field Measurements ◽  
Test Facility ◽  
Air Leakage ◽  
Predictive Capacity ◽  
Leakage Field ◽  
Hygrothermal Performance ◽  
Wood Frame ◽  
The University ◽  
Building Engineering

The thesis examines the hygrothermal performance of six types of high thermal resistance (High RSI) wall assemblies during environmental exposure and an air leakage (exfiltration) simulation test. These walls were installed in the Building Engineering Group's test facility (BEG Hut) located at the University of Waterloo. The High-RSI wood-frame walls were assessed by analyzing condensation, mould, and decay risks using the moisture content, temperature, relative humidity and heat flux data collected during the field test. These field-measured data were also used to calibrate one-dimensional WUFI® simulation models for each of the High-RSI assembly for use in future durability assessments using a range of North American climates. Methods were investigated to improve the predictive capacity of these simulation models as well as to increase their utility as a research tool. The design, construction and instrumentation details of the High-RSI study were also documented.

scholarly journals Development and Assessment of Coatings for Future Power Generation Turbines

2012 ◽  
Author(s):  
M. A. Alvin ◽  
D. Zhu ◽  
K. Klotz ◽  
B. McMordie ◽  
B. Warnes ◽  
...  
Keyword(s):  
Single Crystal ◽  
Technology Development ◽  
Extreme Temperature ◽  
Test Facility ◽  
West Virginia University ◽  
University Of Pittsburgh ◽  
Barrier Coating ◽  
Regional University ◽  
The University

The NETL-Regional University Alliance (RUA) continues to advance technology development critical to turbine manufacturer efforts for achieving DOE Fossil Energy (FE’s) Advanced Turbine Program Goals. In conjunction with NETL, Coatings for Industry (CFI), the University of Pittsburgh, NASA GRC, and Corrosion Control Inc., efforts have been focused on development of composite thermal barrier coating (TBC) architectures that consist of an extreme temperature coating, a commercially applied 7-8 YSZ TBC, a reduced cost bond coat, and a diffusion barrier coating that are applied to nickel-based superalloys or single crystal airfoil substrate materials for use at temperatures ≥1450°C (≥ 2640°F). Additionally, construction of a unique, high temperature (∼1100°C; ∼2010°F), bench-scale, micro-indentation, nondestructive (NDE) test facility at West Virginia University (WVU) was completed to experimentally address in-situ changes in TBC stiffness during extended cyclic oxidation exposure of coated single crystal coupons in air or steam-containing environments. The efforts and technical accomplishments in these areas are presented in the following sections of this paper.

Experimental investigation of corner-supported architectural glazing under pulse pressure loading

2003 ◽  
Vol 38 (5) ◽  
pp. 469-481 ◽  
Author(s):  
A. M Goodfellow ◽  
G. K Schleyer
Keyword(s):  
Pulse Pressure ◽  
Dynamic Behaviour ◽  
Dynamic Pressure ◽  
Test Facility ◽  
City Centre ◽  
Research Centre ◽  
Pressure Loading ◽  
Full Size ◽  
Vulnerability Of Buildings ◽  
The University

City centre bombings demonstrate the vulnerability of buildings to the effects of an explosion. Glazing panels on buildings, which shatter in the blast, are the main cause of injury due to the high-velocity fragments produced. A special test facility recently developed in the University of Liverpool Impact Research Centre has been used to investigate the dynamic behaviour of glazing components under pulse pressure loading. The type of glazing system studied in this work is supported at discrete points, unlike conventional glazing systems, which are usually supported along all edges. Novel experimental techniques have been used successfully to apply dynamic pressure pulses to full-size, 1 m by 1 m by 10mm thick glazing panels supported at four corner points under controlled laboratory conditions.

Set Up of an Experimental Facility for the Investigation of Wet Compression on a Multistage Compressor

2010 ◽  
Author(s):  
R. Bettocchi ◽  
M. Morini ◽  
M. Pinelli ◽  
P. R. Spina ◽  
M. Venturini ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Test Facility ◽  
Experimental Facility ◽  
Negative Effects ◽  
Technical Literature ◽  
Multistage Compressor ◽  
Wet Compression ◽  
Set Up ◽  
The University ◽  
The Impact

At present, inlet fogging and wet compression are two of the most widely used approaches to enhance gas turbine performance, especially during hot seasons. However, potentially negative effects of these practices on long-term operational integrity of gas turbines should be evaluated carefully; in particular, wet compression may lead to the erosion of first compressor stages, due to the impact of water droplets within the flow at compressor intake. This issue is still controversial in technical literature, since only limited historical field operating data and information are available. Therefore, a test facility was specifically set up in the laboratories of the University of Ferrara, to evaluate the effects of wet compression on a small-size compressor. This paper presents the experimental facility developed for wet compression investigation and some preliminary results.

Setup of an Experimental Facility for the Investigation of Wet Compression on a Multistage Compressor

2011 ◽  
Vol 133 (10) ◽  
Author(s):  
R. Bettocchi ◽  
M. Morini ◽  
M. Pinelli ◽  
P. R. Spina ◽  
M. Venturini ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Test Facility ◽  
Experimental Facility ◽  
Negative Effects ◽  
Technical Literature ◽  
Multistage Compressor ◽  
Wet Compression ◽  
Set Up ◽  
The University ◽  
The Impact

At present, inlet fogging and wet compression are two of the most widely used approaches to enhance gas turbine performance, especially during hot seasons. However, potentially negative effects of these practices on long-term operational integrity of gas turbines should be evaluated carefully; in particular, wet compression may lead to the erosion of first compressor stages due to the impact of water droplets within the flow at compressor intake. This issue is still controversial in technical literature since only limited historical field operating data and information are available. Therefore, a test facility was specifically set up in the laboratories of the University of Ferrara, to evaluate the effects of wet compression on a small-size compressor. This paper presents the experimental facility developed for wet compression investigation and some preliminary results.

scholarly journals Hygrothermal performance of highly insulated wood frame walls with air leakage: field measurements and simulations.

2021 ◽  
Author(s):  
Michael J Fox
Keyword(s):  
Simulation Models ◽  
Field Measurements ◽  
Test Facility ◽  
Air Leakage ◽  
Predictive Capacity ◽  
Leakage Field ◽  
Hygrothermal Performance ◽  
Wood Frame ◽  
The University ◽  
Building Engineering

The thesis examines the hygrothermal performance of six types of high thermal resistance (High RSI) wall assemblies during environmental exposure and an air leakage (exfiltration) simulation test. These walls were installed in the Building Engineering Group's test facility (BEG Hut) located at the University of Waterloo. The High-RSI wood-frame walls were assessed by analyzing condensation, mould, and decay risks using the moisture content, temperature, relative humidity and heat flux data collected during the field test. These field-measured data were also used to calibrate one-dimensional WUFI® simulation models for each of the High-RSI assembly for use in future durability assessments using a range of North American climates. Methods were investigated to improve the predictive capacity of these simulation models as well as to increase their utility as a research tool. The design, construction and instrumentation details of the High-RSI study were also documented.

Boundary Conditions for Compressor Cascade Ice Crystal Icing Testing

2020 ◽  
Author(s):  
Matthias Nagorski ◽  
Christian Koch ◽  
Stephan Staudacher
Keyword(s):  
Target Surface ◽  
Test Facility ◽  
Ice Crystal ◽  
Compressor Cascade ◽  
Power Setting ◽  
Ice Water Content ◽  
Linear Compressor Cascade ◽  
The University ◽  
Ice Water ◽  
Operating Points

Abstract At the Altitude Test Facility (ATF) of the University of Stuttgart a linear compressor cascade test rig serves the investigation of ice crystal icing (ICI) under engine realistic conditions. A numerical model of the first stage of NASA Stage 67 is validated with experimental data taken from literature and used to investigate the respective ice crystal icing conditions for prospective cascade experiments. Eleven operating points simulating climb conditions with constant non-dimensional power setting through ascending parcels of moist air are selected for analysis. Only the melting-dominated regime is considered. The 3D flow field is obtained using a RANS approach in combination with a Spalart-Allmaras one-equation turbulence model. The droplet and ice crystal trajectories are calculated based on an Eulerian framework. The computation of the surface energy balance is adapted from the Messinger model taking into account unsteady phenomena. Four of eleven selected operating points indicate the onset of substantial ice accretion. A static wet bulb temperature of freezing constitutes in general the lower icing limit for rig experiments. The upper icing limit depends on the ice water content impinging and sticking to the target surface.

Boundary Conditions for Compressor Cascade Ice Crystal Icing Testing

2021 ◽  
pp. 1-16
Author(s):  
Matthias Nagorski ◽  
Christian Koch ◽  
Stephan Staudacher
Keyword(s):  
Target Surface ◽  
Test Facility ◽  
Ice Crystal ◽  
Compressor Cascade ◽  
Power Setting ◽  
Ice Water Content ◽  
Linear Compressor Cascade ◽  
The University ◽  
Ice Water ◽  
Operating Points

Abstract At the Altitude Test Facility (ATF) of the University of Stuttgart a linear compressor cascade test rig serves the investigation of ice crystal icing (ICI) under engine realistic conditions. A numerical model of the first stage of NASA Stage 67 is validated with experimental data taken from literature and used to investigate the respective ice crystal icing conditions for prospective cascade experiments. Eleven operating points simulating climb conditions with constant non-dimensional power setting through ascending parcels of moist air are selected for analysis. Only the melting-dominated regime is considered. The 3D flow field is obtained using a RANS approach in combination with a Spalart-Allmaras one-equation turbulence model. The droplet and ice crystal trajectories are calculated based on an Eulerian framework. The computation of the surface energy balance is adapted from the Messinger model taking into account unsteady phenomena. Four of eleven selected operating points indicate the onset of substantial ice accretion. A static wet bulb temperature of freezing constitutes in general the lower icing limit for rig experiments. The upper icing limit depends on the ice water content impinging and sticking to the target surface.

Sign in / Sign up

Export Citation Format

Share Document